Propane generators can keep your home powered during an outage. They run on propane fuel (some use gasoline too) and can produce electricity for your appliances. Below we list 20 we found that could qualify as the best propane generator for home backup in 2025.
We grouped them into portable generators (you can move these, good for partial home backup or emergencies) and standby generators (permanently installed, turn on automatically during outages). We include budget picks and premium options, small and large.
Note: All power ratings are in watts. “Dual fuel” means it uses propane or gasoline. “Tri-fuel” means it can use propane, gasoline, or natural gas.
Top Portable Propane Generators for Home Backup
Portable generators are mobile units on wheels. You roll them outside when needed and plug in appliances or a transfer switch. They must be operated outdoors for safety. These units are great for running a few key appliances like fridges, lights, or even a well pump during an outage.
Many are dual fuel or tri-fuel, meaning you can run them on propane for cleaner fuel or gasoline if needed. They range from small, quiet inverter generators to large open-frame generators that can power most of your house (though not automatically).
1. Westinghouse 12,500-Watt Dual Fuel Portable Generator (WGen9500DF)
Fuel: Propane or Gasoline (Dual Fuel)
Power: 9,500 watts running (on gas), 8,500W on propane
Start: Electric Start
Weight: ~220 lbs (wheels included)
Why It’s Good: This Westinghouse is a best-seller and a powerhouse for home backup. It can run refrigerators, freezers, lights, and even medium AC units. On propane, it still provides plenty of power (8.5 kW running). Users love its reliability – it has over 24,000 ratings on Amazon with a 4.7/5 star average, showing how popular it is.
It runs up to 12 hours on gasoline (25% load) or about 7 hours on a 20 lb propane tank, so it can last through the night. It’s transfer switch ready, meaning it has a 240V outlet to plug into your house’s breaker panel. It even lets you switch fuels without shutting down (just turn the fuel selector).
This generator has a remote electric start, so you can start it by a key fob from inside the house – very handy during storms.
Pros: Lots of power, dual fuel flexibility, many outlets, proven track record.
Cons: It is heavy (over 200 lbs) – but the wheels help move it. It can be a bit noisy like most big open-frame generators (~72 dB, similar to a loud vacuum).
Overall, it’s a top choice for whole-home backup on a budget, giving standby-level power in a portable package.
Note: US model; Westinghouse generators like this are widely available in the U.S.
2. Westinghouse 14,500-Watt Tri-Fuel Portable Generator (WGen11500TFc)
Fuel: Propane, Gasoline, or Natural Gas (Tri-Fuel)
Power: 11,500W running (gas), ~10,500W on propane, ~9,500W on natural gas
Start: Electric Start
Weight: ~270 lbs (wheels)
Why It’s Good: This generator is ultra-versatile, running on three fuels. It’s one of Westinghouse’s latest models and packs 14.5 kW peak power (on gas) – that’s enough to start big appliances or even 2 smaller AC units. On propane it still has 10,500W peak, which can handle a lot.
Homeowners like tri-fuel because you can connect it to a natural gas line for unlimited run time, or use propane tanks, or gasoline – whatever is available. It’s designed for whole-home backup with features like remote start and being transfer-switch ready. Despite the high output, it can still run about 12 hours on gasoline (8.5 gal tank) at half load. It has a strong 3-year warranty from the manufacturer.
This unit is a bit heavy and premium-priced, but if you want one generator with maximum fuel flexibility and very high wattage, this is a top pick.
Note: Tri-fuel generators of this size are new and popular in 2025. Westinghouse’s model is leading in this category.
(Source: westinghouseoutdoorpower.com)
3. DuroMax 13,000-Watt Dual Fuel Portable Generator (XP13000EH)
Fuel: Propane or Gasoline
Power: 10,500W running (gas), ~9,975W running on propane
Start: Electric Start
Weight: ~230 lbs.
Why It’s Good: The DuroMax XP13000EH is nicknamed “The Beast” by many users. It’s a big dual fuel generator that can keep an entire small home running in an outage. It has a large 500cc engine and puts out up to 13 kW of surge power, enough to start a home central A/C unit.
Running on propane, it delivers about 10 kW of continuous power, which covers essentials and more. People praise that it starts easily and can indeed power most of their houses during emergencies.
DuroMax advertises that this unit provides “the power normally found in stationary home standby units but in a portable package” – and it’s true, 10.5 kW running is similar to some installed generators. It has full 120/240V capability (for well pumps or home transfer switches) and multiple GFCI outlets. It’s EPA and CARB approved, so it’s available in all states.
Pros: Huge power, dual fuel convenience, suitable for heavy loads (like well pumps, AC, etc.).
Cons: It is loud (around 74 dB) and heavy, so you’ll likely store it in the garage and wheel it out when needed (two people may be needed to help).
Overall: If you have big backup needs but not the budget for a standby, the DuroMax is a top-selling choice – it’s even rated to run an entire home in outages.
(Source: duromaxpower.com)
4. DuroMax 9,000-Watt Dual Fuel Inverter Generator (XP9000iH)
Fuel: Propane or Gasoline
Power: 7,600W running (gas), 7,200W running on propane
Start: Electric & Remote Start
Weight: ~237 lbs.
Why It’s Good: This is a special generator – it’s one of the largest inverter generators on the market. Inverter generators produce “clean” electricity safe for electronics like TVs and computers. The XP9000iH gives you up to 9,000W of surge power and 7,200–7,600W continuous, and it runs on propane or gas.
It’s ideal if you want to backup your home office or sensitive devices along with appliances. Being an inverter, it’s also quieter than standard generators – about 61-65 dB, which is much quieter for the power level (similar to a conversation). DuroMax calls it “clean, whole home power backup”.
It can be paired with another identical unit for even more power (parallel kit). Customers like the remote start feature and digital display that shows load and hours.
Pros: Quieter operation, stable power for electronics, dual fuel, high wattage for an inverter.
Cons: It’s quite heavy for an inverter and not as compact, but it does have wheels.
Overall: This model is perfect for those who want a balance of power and quiet operation – for example, running a home backup while also safely powering computers and medical devices.
Note: This model is popular in 2025 due to its unique large inverter design – it has been highlighted as a “Best Overall” portable by experts.
(Source: duromaxpower.com, ruralking.com, cummins.com, popularmechanics.com)
5. Champion 8,000-Watt Tri-Fuel Portable Generator (100416)
Fuel: Propane, Gasoline, or Natural Gas
Power: 8,000W running (gas), 7,200W running (propane), 7,000W on natural gas
Start: Electric Start
Weight: ~215 lbs.
Why It’s Good: The Champion 100416 tri-fuel is one of the most versatile and popular mid-size home backup generators. It gives about 8 kW of power on gasoline and around 7.2 kW on propane, which is enough for essential circuits (fridge, some lights, TV, furnace blower, etc.).
What makes it shine is the tri-fuel capability – it comes ready to connect to a natural gas line or propane tank out of the box. That means you can hook it to your home’s gas supply for unlimited run time (no refueling), or use portable propane tanks if needed. This flexibility is great for extended outages.
Champion includes both a natural gas hose (25-ft) and a propane hose kit. Users also love the electric start and the Champion Intelligauge display which shows volts, frequency, and run time. It has CO Shield® technology for safety (auto-shuts if CO gas builds up).
On gasoline it runs about 12.5 hours at 50% load on the big 8.5-gallon tank; on a standard 20 lb propane tank, about 5 hours at 50%.
Pros: Extremely versatile fuel options, solid 8000W power output, comes with everything needed for all fuels, and a trusted brand.
Cons: It’s not a lightweight unit and makes noise like other open-frame generators (~74 dB).
Overall: for the convenience of no refueling when on natural gas, many homeowners find this to be a top investment for backup power.
It’s one of the highest rated tri-fuel portables, often selling through outlets like Lowe’s and Costco with great feedback.
(Source: championpowerequipment.com)
6. Champion 4,500-Watt Dual Fuel Inverter Generator (Quiet Series)
Fuel: Propane or Gasoline
Power: 3,500W running (gas), ~3,150W running on propanechampionpowerequipment.com
Start: Electric Start (pull backup)
Weight: ~95 lbs (wheel kit optional).
Why It’s Good: This Champion inverter generator is quiet and portable, making it a good choice if you only need to back up a few essentials or you want something you can use for both outages and camping/tailgating. It’s rated at 61 dBA (which is about the sound of a normal conversation) – much quieter than big open-frame units.
Despite its small size, it can still run a refrigerator, some lights, charge devices, and a sump pump or microwave in a pinch (3,500W on gas, ~3,150W on propane). It has dual fuel capability, so you can run it on a propane tank for convenience (on a 20 lb propane, it can run up to 21 hours at 25% load!).
Customers appreciate the easy electric start and the built-in fuel gauge and voltmeter. It also has parallel capability, so you could link two of these to double the output if needed later. This model features Champion’s CO Shield® for safety too.
Pros: Very quiet and easy to move (has a handle and optional wheels), long run time (up to 14 hours on gas at 25% load, or 21 hours on propane at 25% load), safe for electronics (inverter outputs clean power).
Cons: It’s not meant to run heavy 240V appliances (no 240V output) – this is strictly for 120V circuits/devices.
Overall: for many people, keeping the fridge, Wi-Fi, phones, some lights, and a fan or small heater going is enough, and this generator can do that with minimal noise. It’s a top-rated small dual fuel generator (often 4.8/5 stars) and a great choice if you have a small home or just need essential backup while keeping things quiet.
Champion’s 4500W inverter is one of Home Depot’s top-selling inverter generators due to its blend of power and quiet operation.
(Sources: championpowerequipment.com, homedepot.com
7. WEN 4,750-Watt Dual Fuel Portable Generator (Model DF475T)
Fuel: Propane or Gasoline
Power: 3,800W running (gas), 3,500W running on propane
Start: Electric Start + Recoil
Weight: ~105 lbs.
Why It’s Good: The WEN 4750DF is a budget-friendly dual fuel generator that’s very popular for emergency home use. It’s affordable yet offers solid performance. On gasoline it provides 3,800 running watts (4,750 surge), and on propane ~3,500 running (4,350 surge). That’s enough to run your refrigerator, some lights, phone chargers, a small heater or window AC, and maybe a TV, all at once.
It has a 240V outlet as well, so you can even power a well pump or connect to a manual transfer switch for a few circuits. Why people like it: It’s known to be easy to use – customers report it’s easy to assemble and starts reliably on both propane and gas. The electric start means no hassling with pull cords (though it has recoil backup). It also comes with a wheel and handle kit, making the ~100 lb weight manageable. For noise, it’s rated around 72 dB (about like a vacuum cleaner).
Pros: Very good value (one of the cheapest dual-fuel generators in its class), dual fuel flexibility, electric start, and WEN’s generally good reputation for small engines.
Cons: It doesn’t have fancy features or inverter tech – it’s a simple workhorse, and it will be a bit loud and thirsty at higher loads (like most open frames). It also has a smaller tank (4 gallons) so runtime is around 8-11 hours at half load on gas.
Overall: for the price, many buyers are pleasantly surprised by its performance and build quality, making it a top seller in the mid-size category.
WEN is a well-known brand for affordable generators, and this model often appears in “best bang for buck” lists.
(Sources: generatorbible.com, homedepot.com)
8. Firman 7,500-Watt Tri-Fuel Portable Generator (T07571)
Fuel: Propane, Gasoline, or Natural Gas
Power: 7,500W running (gas), 6,750W running on propane, ~6,000W on natural gas
Start: Electric Start + Remote
Weight: ~221 lbs.
Why It’s Good: This tri-fuel generator from Firman is very popular through stores like Costco. It’s sometimes called the “trifecta” generator because it can use gasoline, propane, or natural gas out of the box. It even includes a remote start feature, so you can start it from inside your house. Power-wise, on gasoline it gives 7.5 kW continuous (9.4 kW peak). On propane, about 6.75 kW continuous (8.45 kW peak). That is plenty for most or all of your essential circuits.
One cool thing: if you have it connected to your home’s natural gas line, it can act almost like a standby – you won’t run out of fuel and it can run non-stop if needed. Firman advertises that when paired with a transfer switch, this unit can serve as a “portable whole-house standby” solution. It also comes with nice extras like a generator cover, funnel, and LP hose in the box.
Pros: Ultimate fuel flexibility (you’ll always have some fuel option), high power output, coated steel frame and all-weather design (Firman is known for durable frames). It has a digital meter and push-button start for convenience.
Cons: It’s heavy (over 200 lbs), and not as widely known a brand as some (though in recent years Firman has built a good reputation, partly thanks to Costco). Noise is similar to others in this class (~72-74 dB).
Overall: if you want a tri-fuel generator in the ~7kW range, this Firman is a top seller and a great value (often priced lower per watt than competitors). It’s often praised as a “do-it-all” generator for emergencies.
Internationally, Firman is sold in North America; similar tri-fuel models by other brands may not be available in the U.S.
(Sources: costco.com, firmanpowerequipment.com)
9. Sportsman 4,000-Watt Dual Fuel Generator (Budget Pick)
Fuel: Propane or Gasoline
Power: 3,500W running (gas), ~3,150W running on propane
Start: Recoil Pull Start
Weight: ~90 lbs.
Why It’s Good: If you’re looking for an ultra-affordable backup generator, the Sportsman 4000DF is hard to beat. It’s often one of the lowest-priced dual fuel generators on the market, making it a big seller for budget-conscious buyers. Despite the low price, it provides a decent 3,500 watts continuous on gas (4kW peak) which can keep your fridge, some lights, phone chargers, and maybe a small heater or microwave going (just not all at once if they’re large).
On a 20 lb propane tank, it gives about 3,150W running, 4,000W surge. This generator is simple and rugged – no electric start, just a pull cord, and a basic analog voltmeter. But customers report that it starts easily and is lightweight to move around. Many are surprised at its performance for the cost: “It starts easily, is lightweight, and not too loud,” said one user. It’s perfect for basic emergency use or for powering tools at a remote site.
Pros: Extremely affordable, dual fuel flexibility, low complexity (less to go wrong), and fairly compact.
Cons: Lacks advanced features (no push start, no 240V outlet on some versions, though newer ones might include a 120/240V twist-lock), and the build quality is utilitarian (it’s not as refined or quiet as pricier models). Noise is around 68-72 dB, a bit loud but typical for an open frame of this size.
Overall: This Sportsman model sells a lot because it gives people entry-level backup capability for a few hundred dollars. It’s a good starter generator for emergencies or small jobs.
It’s sold at major retailers like Walmart and Home Depot, often with positive reviews for value. Keep in mind this is more popular in the U.S.; in some countries, similar cheap dual-fuel models exist under different brands.
(Sources: walmart.com, reddit.com)
10. Pulsar 12,000-Watt Dual Fuel Generator
Fuel: Propane or Gasoline
Power: ~9,500W running (gas), ~8,550W running on propane
Start: Electric Start
Weight: ~209 lbs.
Why It’s Good: The Pulsar 12kW dual fuel generator is a heavy-duty backup generator that competes closely with DuroMax and Westinghouse in the high-power portable segment. It’s loved by many homeowners for its bang-for-buck – you get a full 12,000W class generator often at a lower price than some big-name brands.
On gasoline it provides around 9.5 kW continuous, and on propane roughly 8.5 kW, which is enough to run multiple large appliances. For instance, you could run a refrigerator, a deep freezer, some lights, a well pump, and a small AC all together with this kind of power (just be mindful of starting surges).
Users comment that this Pulsar is “excellent for the price” and very solid. It comes with handy features like electric start, and sometimes even includes a mobility kit (wheels) and an LP hose. Assembly is straightforward (attach wheels/handles).
Pros: High wattage output, dual fuel, competitive pricing, and a reputation of starting up reliably. One customer review noted it was “easy to assemble and…very happy with the quality of the product”. Many appreciate not having to worry about fuel since it can use propane (no carb clogs if stored).
Cons: It’s heavy and fairly loud (expect ~74 dB at 50% load). Also, Pulsar is a slightly lesser-known brand compared to Champion or Generac, but it has gained trust over recent years through strong performance.
Overall: if you need serious power on propane for a good value, the Pulsar is a top contender. It often appears in top-seller lists for dual-fuel generators and has strong customer ratings for delivering on its promises.
(Sources: generatorbible.com, amazon.com, walmart.com, homedepot.com)
11. Generac GP9500E Tri-Fuel Portable Generator
Fuel: Propane, Gasoline, or Natural Gas
Power: 9,500W running (gas), ~8,000W running on propane, ~7,000W on NG (est.)
Start: Electric Start
Weight: ~260 lbs.
Why It’s Great: Generac is the #1 home generator brand, and they’ve brought their expertise to a tri-fuel portable unit. The GP9500E Tri-Fuel (sometimes referred to as GP8000 Tri-Fuel) is prized for combining Generac’s quality and an automatic home generator’s flexibility in a portable form.
On gasoline, it packs 12,500 starting watts and 9,500 running watts, making it one of the most powerful in its class. On propane and natural gas the output is a bit lower, but still enough for heavy loads. What sets this generator apart is the Generac engine and build – it’s designed for reliability under continuous use, with features like idle control and a large steel fuel tank. It’s also equipped with Generac’s COsense for safety (CO monitoring). Home Depot descriptions call this tri-fuel Generac “a wise investment for any household”, highlighting its strong power output.
Pros: Excellent power output across three fuel options, Generac’s renowned engine (the G-Force series, made for extended run times), and support/warranty from a top company (typically 3-year residential warranty). People who have bought it love not worrying about fuel: during short outages they might use propane, and for extended ones they can hook to natural gas supply – no refueling needed.
Cons: It is expensive and heavy, and being a newer product, availability can be limited. Also, it’s quite loud when running at full tilt (comparable to other big portables).
Overall: if you want the peace of mind of Generac (the same brand that makes many whole-house units) in a portable tri-fuel package, this generator is a top pick. It’s been rated as a “Best Budget Standby Alternative” by some experts because it gives you standby-like fuel options and power without the permanent install.
This model is U.S. focused; Generac is also sold internationally, but this specific tri-fuel unit may not be available outside North America.
Sources: generac.com, homedepot.com, popularmechanics.com
12. Predator 13,000-Watt Tri-Fuel Portable Generator (Harbor Freight)
Fuel: Propane, Gasoline, or Natural Gas
Power: 10,000W running (gas), ~9,000W running on propane, ~8,000W on NG
Start: Electric & Remote Start
Weight: ~260 lbs.
Why It’s Good: The Predator 13000 Tri-Fuel is Harbor Freight’s flagship generator, and it has quickly become a hit for homeowners needing serious backup power. It’s been highlighted in reviews as “the ultimate power solution for homeowners”. Here’s why: Tri-fuel capability for maximum convenience, massive output (13kW surge, 10kW continuous on gas), and Predator’s improvements like CO Secure carbon monoxide shutdown.
This generator can comfortably run a 50-amp RV or a whole home’s critical systems. It even has a remote start fob so you can start it from indoors. With a huge 10.7-gallon tank, it can run about 12 hours at half load on gasoline. The unit is built with a sturdy frame and wheel kit, given its weight. Owners mention that it can start heavy loads like well pumps and 5-ton central AC units thanks to its high surge capacity.
Pros: Tremendous power output, three fuel options (with included fuel selector switch and hoses), and a reputation for reliability – Predator generators often get good marks for running for long hours without issues. It’s also relatively quiet for its size, around 75 dB at 50% (Harbor Freight claims ~72 dB).
Cons: It’s heavy and not cheap (though usually more affordable than some brand-name equivalents). Also, Harbor Freight locations are the primary sellers, though they offer nationwide support.
Overall: The Predator 13kW Tri-Fuel is a top-selling high-end portable – it brings standby-level power in a portable unit. If you have big backup needs but still want a portable you can store away, this is a fantastic choice.
As of 2025, it’s one of the very few tri-fuel generators in the 10kW+ range, and demand has been strong. Harbor Freight’s inclusion of remote start and tri-fuel has set this model apart.
International Note: In some countries, certain propane generator models differ. For example, in the UK and Europe, brands like Hyundai offer LPG/propane generators (e.g., the Hyundai HY10000LE-LPG, ~7kW) which are not sold in the U.S. Champion and other U.S. brands also sell LPG models abroad. Always check availability in your region – the above models are top sellers in the U.S. market as of 2025.
(Sources: acworks.com, harborfreight.com, findtheneedle.co.uk)
Top Standby Propane Generators for Home Backup
Standby generators are permanently installed outside your home (similar to a central AC unit). They connect to a propane tank or natural gas line and an automatic transfer switch. When the power goes out, they turn on automatically within seconds and can power either the whole house or selected circuits. These are more expensive upfront and require professional installation, but they offer seamless backup power without you lifting a finger.
Most standby units run on propane (LP) or natural gas (NG) – in fact, they are usually dual-fuel in the sense that you can set them up for either fuel (you choose one at install). Below are the top-selling standby propane generators (propane capacity listed; they typically run slightly lower wattage on NG). These range from small 10 kW units for essential circuits up to large 24 kW units for whole-home power.
All of these come with automatic transfer switches in most packages and have features like self-test modes and remote monitoring.
A home standby propane generator (Champion 14kW unit) installed outside a house. It automatically turns on during an outage to keep the home powered.
zillerelectric.com, championpowerequipment.com
13. Generac Guardian 22 kW Standby Generator (Model 7043/7226)
Fuel: Propane (LP) or Natural Gas
Power: 22,000W on propane, ~19,500W on natural gas
Start: Automatic (electric, auto-exercise)
Installation: Permanent (requires 200A transfer switch).
Why It’s Good: Generac’s 22 kW Guardian is the #1 selling home standby generator in America. When people think of whole-house generators, this is often the model they choose. It’s powerful enough to back up an entire medium-to-large home, including 5-ton central AC, fridge, well pump, and more. Home Depot confirms it’s the “top-selling product” in home standby gens.
Running on propane, it delivers a full 22 kW of power (and 19.5 kW on NG).
What It’s Good: Reliability and automation. It comes with Generac’s Evolution controller with Wi-Fi, so you can monitor status on your phone. It does a weekly self-test (you can set it to a quiet mode for testing).
It features Generac’s own purpose-built G-Force engine, pressure-lubricated for long life, capable of running for days on end. The entire unit is in an all-aluminum, weatherproof enclosure, so it can handle harsh weather (rust-proof).
Generac also has a nationwide dealer network for service.
Pros: Can handle whole-house loads, fast automatic transfer (typically restores power in ~10 seconds of an outage), 5-year warranty, and Generac’s MobileLink monitoring. It’s also relatively compact for its output and approved for 18-inch-to-house installation (meets NFPA standards).
Cons: It’s a significant investment (often $5k+ plus installation costs), and it needs professional installation (concrete pad or polymer pad, wiring, propane hookup). Also, like any standby, it will require maintenance (oil changes, etc.), and it makes noise (around 67 dB in exercise mode, a bit louder under full load – like an idling truck).
Overall: For most homeowners wanting peace of mind, this Generac 22 kW is the go-to choice – you’ll often hear “my Generac kicked on and saved the day” during storms. It’s so common that Generac has ~75% market share in home standbys. This model’s popularity is backed up by thousands of reviews (Home Depot shows over 2,700 reviews with 4.8★ avg for the 22kW unit).
If you have a larger home, know that Generac also makes a 24 kW model now – see below. But the 22 kW remains the volume leader.
(Sources: homedepot.com, zillerelectric.com)
14. Generac Guardian 24 kW Standby Generator (Model 7210/7209)
Fuel: Propane or Natural Gas
Power: 24,000W on propane, ~21,000W on NG
Start: Automatic
Installation: Permanent.
Why It’s Good: Generac made headlines with this model because it’s the most powerful air-cooled home standby available. The 24 kW Guardian can do it all – if you have multiple AC units or a very large home, this provides extra headroom. It’s essentially the big brother to the 22kW, sharing most of the same features (Wi-Fi, controller, engine) but tuned for higher output. In fact, experts at Electric Generators Direct picked the Generac Guardian 7209 (24kW) as the “Best Home Standby Generator” for 2025.
It provides 24 kW on LP, which means even heavy loads plus some extras can run simultaneously. For example, two 3-ton AC units, electric oven, well pump, and more – no problem with 24kW. This model also has the new Generac engine version to handle the extra kW, and still fits in roughly the same footprint as the 22kW. Generac managed to keep size similar, which they advertise as 70% smaller footprint than some competitors for similar output.
Pros: Highest-in-class power, all the benefits of Generac’s Guardian series (5-year warranty, Mobile Link, smart load management capability for up to 4 HVACs). It’s also surprisingly efficient for its size – Generac improved fuel efficiency at lower loads compared to older models.
Cons: Slightly more expensive than the 22kW, and if your propane tank is not large, you’ll want to ensure sufficient fuel supply since 24kW can consume a lot of propane under full load. Noise level is similar to 22kW (around 67-70 dB). The popularity of this unit has soared since its release – many homeowners who might have needed a liquid-cooled (very expensive) 30 kW unit can instead opt for this air-cooled 24 kW.
It’s been noted as a best-seller alongside the 22kW by industry retailers.
If you want the biggest and most powerful home standby (on propane) for a reasonable cost, the Generac 24 kW is the top choice of 2025.
It’s often packaged with a 200A whole-house transfer switch. Model #7210 usually includes that switch. Make sure to size your propane tank appropriately – a 500-gallon tank is common for full house backup with these generators.
(Sources: electricgeneratorsdirect.com, generac.com, zillerelectric.com)
15. Generac Guardian 10 kW Standby Generator (Model 7171)
Fuel: Propane or Natural Gas
Power: 10,000W on propane, ~9,000W on NG
Start: Automatic
Installation: Permanent
Why It’s Good: Not every home needs a huge generator. Generac’s 10 kW Guardian is a popular entry-level standby for those who want automatic backup for essential circuits at a lower cost. It’s often used for smaller homes or just to power critical items (fridge, sump pump, gas furnace blower, a few outlets) during an outage.
Despite being smaller, it shares many features with its bigger siblings: it has the same Evolution controller, 5-year limited warranty, and can be monitored remotely. It’s also far more compact – and 39% smaller footprint than some competing 12kW units, according to Generac. Customers opt for the 10kW because it’s budget-friendly (usually the least expensive Guardian model) and it sips fuel compared to larger units.
It runs quieter during exercise (some report it’s hardly noticeable on test mode). This model is typically paired with a 100A transfer switch that manages essential circuits rather than whole-house.
Pros: Affordable standby solution, great for essential loads, small physical size allows more placement options, and still built with Generac quality (same automotive-style engine design, etc.). It has a strong reputation, with Home Depot showing it as a highly rated item (4.8★ from 2,700+ reviews, combined with similar models).
Cons: It won’t run an entire house unless the home’s usage is very minimal. 10kW on propane can handle one big appliance at a time plus some smaller ones – so you have to manage loads or utilize load-shedding.
Overall: If you plan it for essentials (for example, powering a “survival panel” of fridge, lights, fans, garage door, TV, and gas heating system), it’s perfect. This unit is a top seller for people on a tighter budget or with small homes. It gives the comfort of automatic backup at roughly half the price of a 22kW system.
Generac also makes 13kW and 16kW models, but the 10kW often sells more because many either go for the smallest or jump to 20kW+. The 10kW’s popularity is reflected in many installers offering it as an “economy package.”
(Sources: electricgeneratorsdirect.com, homedepot.com)
16. Champion 14 kW Whole House Standby Generator (100837 aXis)
Fuel: Propane or Natural Gas
Power: 14,000W on propane, 12,500W on NG
Start: Automatic
Installation: Permanent (includes 200A whole-house transfer switch)
Why It’s Good: Champion has entered the home standby market and quickly become a solid competitor to Generac and Kohler. The Champion 14 kW aXis system is their flagship whole-home unit and is a top seller for those seeking an alternative brand. It usually comes as a package with a 200A automatic transfer switch, ready to back up your entire house up to 14 kW. Why people choose it: Champion often offers a 10-year warranty (the longest in the industry) on their standbys, which is a big plus for peace of mind. This 14kW unit is also very quiet – Champion advertises “Quietest-in-Class 62 dB” noise level due to advanced sound dampening. It has Champion’s aXis load management technology, which can manage high-demand appliances to stay within the 14kW limit efficiently. For example, it can prioritize and shed loads like AC units using smart modules, allowing the generator to work like a bigger unit by cycling heavy loads. Users and installers have noted that Champion’s standby is extremely compact and has an innovative design for easier install (uses your home’s existing wiring for communication, no separate control wires needed).
Pros: Whole-house capable for medium homes, very long standard warranty, quiet operation, and that Champion support (Champion is known for good customer service). It’s also built with a 24V starting system that can start in extreme cold (-22°F) without a warming kit.
Cons: As a newer player, Champion’s units aren’t as time-tested as Generac’s, but early reviews are positive. Fewer service dealers exist compared to Generac, but this is improving. Also, 14kW means if you have multiple big appliances, the load manager will need to juggle them (which it is designed to do).
Overall: The Champion 14kW has become a popular choice by offering premium features (10-year warranty, super quiet) often at a competitive price. It’s often cited in reviews as a “great standby generator for the money.” If your home’s peak loads are within 14kW, this unit will keep you very comfortable during outages, automatically and efficiently.
Champion also offers 8.5kW and 12.5kW aXis models, but the 14kW is their best-seller, hitting a sweet spot of power and price. In some regions, Champion’s standby is a top recommendation by installers who value the quiet operation and warranty.
(Sources: electricgeneratorsdirect.com, championpowerequipment.com)
17. Kohler 20 kW Home Standby Generator (20RES / 20RCA)
Fuel: Propane or Natural Gas
Power: ~20,000W on propane, 18,000W on NG
Start: Automatic
Installation: Permanent
Why It’s Good: Kohler is a legendary name in generators (over 100 years in the business) and is known for industrial-grade reliability. The Kohler 20 kW standby unit is one of their most popular for home use – often chosen by those who prioritize durability and performance. It provides a solid 20 kW on LP, enough for whole-house backup in many cases (similar in coverage to Generac’s 22kW). One standout aspect: Kohler’s build quality and engine.
It uses a Kohler Command PRO V- twin engine that’s built for heavy-duty use, and the enclosure is 100% corrosion-proof aluminum – ready for seaside or harsh environments. Users and experts often mention Kohler’s “premium feel” – for example, it has PowerBoost technology to handle large motor start-ups without voltage drop, meaning it can kick on a big AC unit smoothly. Kohler standbys also perform a self-test at a lower RPM, making the weekly exercise quieter and using less fuel.
Pros: Extremely robust and reliable (some say “built like a tank”), very fast response to outages, and backed by a strong 5-year warranty (with option to extend). Kohler’s customer service and dealer support are top-notch. It also offers nice features like OnCue Plus remote monitoring via smartphone. Many homeowners who had Kohler units report they run for decades with proper maintenance.
Cons: Kohler units generally cost a bit more than Generac of equivalent size, and parts/maintenance can be slightly pricier (oil filters, etc.). It’s also a bit louder on full load (in the ~69-70 dB range) but fairly standard.
Overall: The 20kW model’s popularity is high among large homes, estates, or anyone who wants that “commercial-grade” backup. For instance, power equipment experts picked the Kohler 14kW as best for essentials/off-grid due to its reliability, and the same DNA is in the 20kW.
If your budget allows, the Kohler 20RES is an excellent propane standby that will likely outlast many other appliances in your home.
Internationally, Kohler is also sold (often rebranded as SDMO in Europe). This 20kW unit or similar is widely used in the U.S. and Canada. Kohler is often the choice for hospitals and telecom as well – that reputation carries into their home line, giving buyers confidence.
(Sources: electricgeneratorsdirect.com
18. Kohler 14 kW Home Standby Generator (14RCA)
Fuel: Propane or Natural Gas
Power: 14,000W on propane, ~12,000W on NG
Start: Automatic
Installation: Permanent
Why It’s Good: We include Kohler’s 14kW model as it is frequently a top choice for medium homes or essential-load backup and has been recognized as such by experts. Many homeowners who don’t require a full 20kW go for this size to save some cost but still get Kohler’s quality. The 14RCA is known for its reliable construction – the same corrosion-proof enclosure and Kohler Command PRO engine as the 20kW, just tuned to 14kW output. It’s ideal for “powering essentials,” and Kohler even markets it for off-grid cabins because of its reliability and special off-grid warranty option. What sets the 14kW apart is Kohler’s PowerBoost technology which lets it handle large surge currents easily – in tests, it can start a 5-ton AC without dropping power to other loads, which is impressive for its size.
Pros: Very durable and long-lasting, smaller physical size and lower fuel use compared to 20kW, excellent for off-grid or frequent-use scenarios (it can be paired with automatic transfer switches that manage load centers, etc.). It also has all the modern connectivity if desired (OnCue monitoring).
Cons: The price difference to the 20kW sometimes is small, leading some to just upgrade to 20kW. Also, if trying to run an entire modern 3000+ sq ft house, 14kW may require careful load management – but for many average homes or partial backup, it’s plenty.
Overall: The Kohler 14kW has been a consistent best-seller in the mid-size range, and those who buy it often comment on how solid and well-built it is, giving them confidence it will run whenever called upon. It’s a great choice if you want Kohler reliability but don’t need the full 20kW.
The Kohler 14kW is also popular for people with large solar + battery setups as a backup to the backup – because of its off-grid warranty support and integration with inverter systems. It’s arguably one of the most robust 14kW units out there.
(Sources: electricgeneratorsdirect.com)
19. Briggs & Stratton 12 kW PowerProtect Standby Generator (PP12/PP13)
Fuel: Propane or Natural Gas
Power: 13,000W on propane, ~11,500W on NG
Start: Automatic
Installation: Permanent
Why It’s Good: Briggs & Stratton, known for lawn mower engines, also makes quality home generators. Their PowerProtect 12kW/13kW unit (often referred to as PP13) is a best-seller in the “budget standby” category. It was even named the “Best Budget Home Standby” by one expert reviewer.
The appeal is that you get a fully automatic 12-13kW generator at a lower price point than some premium brands, but Briggs has upped their game with features: this model boasts a 7-year warranty, best-in-class (most others are 5 year), a corrosion-resistant enclosure, and it’s assembled in the USA.
It’s also compact – about 39% smaller than some competitors, which is helpful for tight install spaces. The unit provides 13kW on propane, enough to cover a lot of essentials or even whole small homes. It’s smartly designed with a shorter weekly exercise cycle (to reduce noise and fuel use) and includes a 3-stage battery charger to maintain the generator’s battery.
Pros: Excellent value – you get automatic backup without breaking the bank, small footprint, quiet weekly test, and a long 7-year warranty covering parts, labor, and travel (that shows the company’s confidence). It’s also user-friendly; many installers note the straightforward setup and the unit’s clean power output.
Cons: 12-13kW might not handle entire large homes, but it’s perfect for essential circuits or smaller residences.
Overall: While Briggs & Stratton’s dealer network for generators is smaller than Generac’s, it’s growing. And while historically Briggs standbys weren’t as common, the new PowerProtect lineup has gotten great reviews for reliability and improvements. The PP12/PP13 is selling well as people realize they can get a strong-performing standby with a premium warranty at a mid-range price.
In summary, if you are on a budget or only need mid-level power, the Briggs 12kW is a top pick, delivering the essentials with an extra layer of confidence (7-year peace of mind!).
Briggs & Stratton also offers this in 17kW and 20kW sizes, but the 12kW remains a popular choice for cost-conscious buyers. It’s often sold with a 100A or 200A transfer switch depending on needs. B&S is a trusted engine maker, and they’ve applied that know-how here.
(Source: electricgeneratorsdirect.com)
20. Cummins 20 kW QuietConnect Standby Generator (RS20AC)
Fuel: Propane or Natural Gas
Power: 20,000W on propane, ~18,000W on NG
Start: Automatic
Installation: Permanent
Why It’s Good: Cummins (famous for diesel engines) produces the QuietConnect series of home generators, and their 20kW model is a top-of-the-line standby often chosen for larger homes or where low noise is important. Cummins standbys are known for being super quiet and robustly built. In fact, Cummins advertises best-in-class quiet operation at around 65 dB noise level, thanks to sound-insulated enclosures. This is roughly conversation level – very neighbor friendly. The RS20AC is fully capable of whole-home backup, including starting a 5-ton AC under full load (they have an “AmpSentry” load management and a beefy alternator). One neat feature: Cummins has a “Crank Only” exercise mode that does self-diagnostics without running the engine sometimes, reducing wear and fuel usage.
Pros: Very quiet (the 65 dB rating is excellent for 20kW), strong Cummins engine with excellent frequency regulation (good for sensitive electronics), and intelligent load management built-in. It also can be remotely monitored (Cummins has a cloud monitoring app). The enclosure is tough (able to withstand 150 mph winds). Cummins units are often beloved by owners for their longevity and the company’s standby power heritage (Cummins/Onan generators are used in RVs, hospitals, etc., so they know their stuff).
Cons: The Cummins 20kW tends to be premium priced – usually a bit more than Generac/Kohler 20kW units. The dealer network isn’t as large in residential (though any Cummins Onan service center can usually help).
Overall: Those who opt for Cummins often want that ultimate peace of mind and quiet performance. This model also offers features like “exercise at lower speed” and extremely stable voltage output. It is a top seller in the luxury home market or for anyone who can justify the cost for the features. For example, some reviews note it’s so quiet “you hardly notice when it’s running”, which can be a big plus if the generator is near living spaces.
The Cummins QuietConnect 20kW is the choice for those who want commercial-grade backup power at home with minimal noise.
Cummins also makes 13kW and larger liquid-cooled units. The 20kW is their popular air-cooled. Internationally, Cummins is a big player, but their home products might be branded differently or less common outside the U.S. In the U.S., this model competes as a high-end alternative to Generac/Kohler.
(Sources: cummins.com, monkeyindustrialsupply.com, electricgeneratorsdirect.com, northerntool.com)
Final Tips on the Best Propane Generators for Home Backup in 2025
All these propane generators (portable or standby) have their strengths.
Portable units are great if you need backup occasionally or want the flexibility to use it on job sites or camping – just remember to run them outside and use proper transfer switches or extension cords safely.
Standby units offer worry-free automatic power but require an upfront investment and installation (also, keep your propane tank filled or connected to natural gas). Regular maintenance (oil changes, exercising the generator) is key to keep any generator reliable. Verified user reviews and industry data show these 20 models are proven performers in 2025, from budget portables to whole-home giants.
By cross-referencing manufacturer specs, user experiences, and expert rankings, we’re confident these are the best propane generators for home backup you can consider.
Evaluate your home’s power needs, choose a unit from the list that fits your budget and requirements, and you’ll be prepared to keep the lights on when the next outage hits!