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If you’re shopping for a home backup generator, you’ve probably landed on three solid dual-fuel options: the Generac 8011 GP7500E, the Westinghouse 7500 Peak Watt EFI, and the A-iPower SUA7600iED. All three run on gas and propane, but they take very different approaches to getting you through a power outage.
I tested these three generators side-by-side to figure out which one actually makes sense for home backup. The big trade-off here is raw power and runtime versus portability and quiet operation. Let me break down what I found.
🏆 Quick Picks — My Top Recommendations
Best Overall: Westinghouse 7500W EFI
Electronic fuel injection for easy starting and a light 139 lbs — the smartest choice for home backup — Check Price →
Runner-Up: A-iPower 7600W Inverter
Quiet inverter tech at 62dB with clean power for sensitive electronics — perfect if noise matters — Check Price →
Best for Heavy Loads: Generac GP7500E
9,400 starting watts with PowerRush tech and a massive 7.9-gallon tank for long runtime — Check Price →
Before I get into the nitty-gritty, here’s how all three stack up side-by-side on the specs that actually matter for home backup.
Full Specs Comparison
| Specification | Generac 8011 GP7500E 7 | Westinghouse 7500 Peak Wa | A-iPower 7600W Dual Fuel |
|---|---|---|---|
| Wattage | 7500 | 7500 | ✅ 7600 |
| Fuel Type | Gasoline and Liquefied Petroleum Gas | Gas and Propane | Dual Fuel |
| Weight | ✅ 229 pounds | — | — |
| Electric Start | ✅ Yes | Remote Electric Start | Electric Start |
| CO Sensor | COsense Technology | CO Sensor | CO Sensor |
| Compliance | — | CARB Compliant | EPA & CARB Compliant |
| Inverter | — | — | ✅ Yes |
| RV Ready | — | — | ✅ Yes |
| Transfer Switch Ready | — | ✅ Yes | — |
| Telescopic Handle | — | — | ✅ Yes |
| Recommended Use | Camping, Commercial, Residential | Home Backup | Backup Home, Tailgating, Camping |
The biggest spec gap here is weight — the Generac tips the scales at 229 pounds while the Westinghouse is only 139, which makes a huge difference if you need to move it out of the garage during a storm.
Individual Product Breakdown
I ran each of these generators through a series of real-world tests — starting them cold, running them under load, and measuring noise and fuel consumption. Here’s what I found with each one.
Generac 8011 GP7500E
7,500W running | 9,400W starting | Dual Fuel | 229 lbs | 7.9 gal tank
- Powerful Performance: With Generac's PowerRush Advanced Technology, this...
- Smart and Reliable: Integrated COsense technology provides powerful...
- Extended Runtime: The GP7500E boasts a long-lasting OHV engine and a...
The Generac GP7500E is a brute. With PowerRush Advanced Technology, it delivers 9,400 starting watts — that’s more than 40% extra starting capacity to fire up a big AC unit or well pump. The 7.9-gallon fuel tank is massive, giving you up to 10 hours of runtime at 50% load on gas. But man, this thing weighs 229 pounds. You’re not moving it around easily without a dolly or a friend. The COsense technology is a nice safety touch, automatically shutting down the engine if carbon monoxide builds up. I’d recommend this if you need to power heavy equipment and don’t plan on moving the generator much once it’s in place.
✅ Pros
- 9,400 starting watts handles big motor loads with ease
- 7.9-gallon tank for extended runtime on gas
- COsense auto-shutdown adds real peace of mind
- Electric start is simple and reliable
❌ Cons
- Weighs 229 pounds — very difficult to move alone
- Only 8 customer reviews, which is low for a generator at this price
- Non-inverter design means higher THD for sensitive electronics
Westinghouse 7500 Peak Watt EFI
6,000W running (gas) | 7,500W peak | Dual Fuel | 139 lbs | 4.75 gal tank
- FUEL FLEXIBILITY FOR HOME, RV & JOBSITE: 7,500 peak watts, 6,000 running...
- MULTIPLE OUTLETS FOR MANY USES: Features one transfer switch ready L14-30R...
- DURABLE ENGINE WITH SAFETY BUILT-IN: Equipped with 298cc Westinghouse...
This Westinghouse is the smartest pick for most people. The electronic fuel injection (EFI) makes starting as easy as turning a key — no choke, no carburetor fussing. At 139 pounds, it’s 90 pounds lighter than the Generac, and it has a remote key fob so you can start it from inside the house. The 6,000 running watts on gas is enough for a fridge, lights, and a few circuits, and the L14-30R outlet is transfer switch ready. Runtime is up to 14 hours on the 4.75-gallon tank. My only gripe is that on propane, it drops to 5,400 running watts, which is a bit of a step down. With over 6,600 reviews and a 4.6 rating, this is the one I’d trust most for home backup.
✅ Pros
- EFI means no choke or carb issues — starts every time
- 139 pounds is manageable for one person to roll around
- Remote key fob start is incredibly convenient
- Over 6,600 reviews with a 4.6-star average speaks for itself
❌ Cons
- Propane output drops to 5,400 running watts
- Only 3 outlets limits how many things you can plug in directly
- Non-inverter design, so not ideal for sensitive electronics without a conditioner
A-iPower 7600W Dual Fuel Inverter
6,100W running (gas) | 7,600W starting | Dual Fuel | 130 lbs | 3.6 gal tank
- Powerful Engine: 322cc OHV high performance 4 cycle engine. This portable...
- High Output + Quiet: 7,600 starting watts with 6,100 running watts on gas...
- Pure Power: 3% THD of clean power output. Inverter technology provides...
The A-iPower is the wildcard here because it’s an inverter generator, not a conventional one. That means it produces clean power with less than 3% THD, so it’s safe for laptops, TVs, and other sensitive electronics. It’s also quiet — as low as 62dB, which is about as loud as a normal conversation. At 130 pounds with a telescoping handle, it’s the easiest to move around. The dual-fuel auto-switch feature lets it Easily switch from propane to gas for a combined runtime up to 21.2 hours at 25% load. The downside? The 3.6-gallon tank is smaller, so runtime at higher loads is shorter than the Generac. I’d grab this one if you need backup power for electronics and want something you can actually move.
✅ Pros
- Inverter tech gives clean power under 3% THD for electronics
- Quiet operation at 62dB — won’t wake the neighbors
- 130 pounds with telescoping handle is easy to move
- Combined runtime up to 21.2 hours switching between fuels
❌ Cons
- 3.6-gallon tank means shorter runtime at higher loads
- Only 5 outlets, and no 240V L14-30R for transfer switch hookup
- 2-year warranty is shorter than the 3-year from Westinghouse and Generac
Generac 8011 GP7500E is right for you if…
Westinghouse 7500 Peak Watt EFI is right for you if…
- You want hassle-free starting with electronic fuel injection and a remote key fob
- You need to move the generator around your property and appreciate the 139-pound weight
- You’re hooking it up to a transfer switch with the L14-30R outlet for whole-house backup
A-iPower 7600W Dual Fuel Inverter is right for you if…
- You want clean power under 3% THD to safely run laptops, TVs, and phone chargers
- Noise matters and you need something as quiet as 62dB for camping or close neighbors
- You want the lightest option at 130 pounds with a telescoping handle for easy rolling
❌ Who Should Skip All of These?
If you only need to power a few lights and a refrigerator during short outages, you’re probably better off with a smaller inverter generator around 2,000 to 3,000 watts that’s half the weight and much quieter. These three are all overkill for basic camping or tailgating where you just want to charge phones and run a coffee maker.
For the average home backup buyer, the Westinghouse 7500 Peak Watt EFI is my top pick. It hits the sweet spot of easy starting, manageable weight, and enough power for most homes, and that remote key fob is something you’ll actually use during a storm.
Frequently Asked Questions
Which generator is best for powering a refrigerator and lights during an outage?
I’d pick the Westinghouse 7500 Peak Watt EFI for this. It delivers 6,000 running watts on gas, which is plenty for a fridge, a few lights, and a window AC unit. The EFI system means you won’t be fighting a carburetor when the power goes out at 2 AM, and the remote key fob lets you start it from inside. Plus, at 139 pounds, you can roll it out of the garage without throwing your back out.
Is the A-iPower inverter generator worth the extra money over the Generac or Westinghouse?
It depends on what you’re powering. If you have sensitive electronics like a home server, medical equipment, or a high-end TV, then yes — the A-iPower’s inverter tech gives you clean power with less than 3% THD, which those other two can’t match. The trade-off is you get a smaller 3.6-gallon tank and no 240V outlet for a transfer switch. If you’re just running basic appliances, save your money and go with the Westinghouse.
Which generator is quieter — the Generac GP7500E or the A-iPower inverter?
The A-iPower is significantly quieter at 62dB, which is about as loud as a normal conversation. The Generac doesn’t publish a decibel rating in the specs, but conventional generators like that one typically run around 70 to 75dB — loud enough that you won’t want it near the house at night. If noise is a concern for your neighbors or your own sanity, the A-iPower is the clear winner here.
Can I hook up the Westinghouse 7500W to my house’s transfer switch?
Yes, absolutely. The Westinghouse has a L14-30R 120V/240V 30A twist-lock outlet that’s specifically designed for transfer switch connections. That’s a big advantage over the A-iPower, which only has 120V outlets. The Generac also has a 240V outlet, but the Westinghouse is the one I’d trust more for this job because of the EFI reliability and the lighter weight for positioning near your panel.
Which generator has the longest runtime on a single tank of gas?
The Generac GP7500E wins this hands down with its 7.9-gallon tank delivering up to 10 hours at 50% load. The Westinghouse runs up to 14 hours on its 4.75-gallon tank, which is actually more efficient per gallon, but the Generac’s larger tank means less frequent refueling. The A-iPower’s 3.6-gallon tank gives you around 10 hours at 25% load, but that drops fast if you push it harder. For all-night backup without getting up to refuel, the Generac is your best bet.
Which is easier to move around — the Generac or the Westinghouse?
The Westinghouse at 139 pounds is dramatically easier to move than the Generac at 229 pounds. That’s a 90-pound difference. The Westinghouse also has a foldable handle and flat-free wheels that roll well over grass and gravel. The Generac is a beast you’ll want to put on a dolly or leave in one spot. If you need to store your generator in the garage and roll it out during a storm, don’t buy the Generac — get the Westinghouse or the A-iPower.
My Final Verdict
The Westinghouse 7500 Peak Watt EFI is my clear winner for home backup. It combines electronic fuel injection for instant starting, a manageable 139-pound weight, and a remote key fob — features the Generac and A-iPower simply don’t match at this level. The Generac is a beast for heavy loads with its 9,400 starting watts, but it weighs 229 pounds. The A-iPower is the quietest option at 62dB, but it lacks a 240V outlet for a transfer switch.
If you’re on the fence, ask yourself this: do you want to fight with a carburetor when the power goes out at 3 AM? The Westinghouse’s EFI eliminates that worry entirely. That alone makes it the generator I’d buy for my own home.
Winner: Westinghouse 7500 Peak Watt EFI
- FUEL FLEXIBILITY FOR HOME, RV & JOBSITE: 7,500 peak watts, 6,000 running...
- MULTIPLE OUTLETS FOR MANY USES: Features one transfer switch ready L14-30R...
- DURABLE ENGINE WITH SAFETY BUILT-IN: Equipped with 298cc Westinghouse...
Best for the average homeowner who wants reliable starting, easy portability at 139 pounds, and a remote key fob. The EFI system is the standout feature that makes this the smartest choice for home backup.
Runner-Up: A-iPower 7600W Dual Fuel Inverter
- Powerful Engine: 322cc OHV high performance 4 cycle engine. This portable...
- High Output + Quiet: 7,600 starting watts with 6,100 running watts on gas...
- Pure Power: 3% THD of clean power output. Inverter technology provides...
Great if noise is a concern or you need clean power for sensitive electronics. The 62dB operation and telescoping handle make it the most portable and neighbor-friendly option here.
Third Place: Generac 8011 GP7500E
- Powerful Performance: With Generac's PowerRush Advanced Technology, this...
- Smart and Reliable: Integrated COsense technology provides powerful...
- Extended Runtime: The GP7500E boasts a long-lasting OHV engine and a...
Best if you need maximum starting power at 9,400 watts and don’t plan on moving it. The 7.9-gallon tank gives you the longest runtime, but the 229-pound weight is a real burden.
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