The RS8000E is a fantastic portable generator that performed admirably for 66+ hrs during a recent 72-hr power outage. I bought mine at the big hardware store that starts with the letter "M" and it was one of the last 2 they still had available. . It easily powered a fridge/freezer, 5 cu ft chest freezer, 1000 watt microwave oven, 8000 BTU window A/C unit, 5000 BTU window A/C unit, a mini-fridge, fish tank with heater/filter/bubbler, and several lamps with low-wattage LED bulbs. We took turns running the A/C units, never running both at the same time. My daughter even ran a hair dryer for a few minutes. The lamps never flickered, indicating that the RS8000E never struggled to keep everything powered. . The generator started up on the first pull every time in between gas tank fill-ups, which were less frequent than I thought they'd be. I was able to run it for 12-14 hrs in between gas fill-ups. . This generator is quite loud because it's so powerful, but we were able to run it overnight because our neighbors' houses are far enough away and they wouldn't be bothered by the noise. . I really like the convenience of the PowerDial, which eliminates the need to flip a choke lever, turn a fuel valve, and push the "On" button before pulling the cord like most other generators require you to do. . I highly recommend this workhorse of a generator. It saved us about $1,000 in frozen meat/food that would have spoiled, prevented our fish from dying, and kept us out of the dark for 3 nights. It paid for itself in its first use. . As a Wisconsinite, Generac is the first name that comes to mind when I think of whole-house and portable generators. You can't go wrong with Generac generators. So if you're thinking of buying the RS8000E, just go ahead and buy it! You won't regret it!

Love the product ,i purchased this generator right after a recent storm .it ran really well and then started giving an error on the co2 sensor. I now need to take it to an authorized repair shop. Strange because the generator was out in the open .it was only 1 day after purchase

[This review was collected as part of a promotion.] Great quality industrial generator. This generator will power our 3 freezers, 2 refrigerators, sump pump, TV's, computers and then some. It's quiet. The handles make it easy to move, even I can move it myself. The self grounding feature is nice. Very fuel efficient. I like that it has a carbon monoxide safety feature. It has a fuel gauge so you can easily tell how much fuel is left. Very easy to use electric start. GFCI outlets with LED indicators are a nice feature. I like that it's made in Wisconsin. I would definitely recommend this generator.

I purchased this during a snowstorm that knocked out our power for a couple of days. We have a newborn and therefore a lot of breastmilk in our freezer that we needed to keep frozen. This was EXTREMELY easy to start and run and then hook up not just the freezer, but also our fridge. It ran for the stated 11+ hours with an upright fridge and freezer and saved everything we needed. The power this specific model provides is more than enough for us and I will hook it up to our furnace down the road if it happens again as well as electrical. In a residential area, it is a little loud, but I presume with snow and nothing else on or running around the neighborhood, it was only maximized because of the circumstances. I will certainly take this with us camping or tailgating down the road as well.

Our family bought 1 of these (as well as a few of other sizes) for back-up power after "Snowtober 2011" left us in the dark for 6 days. Our home has 2 heat pumps w/aux heat, and electric hot water. I wanted a unit that would be able to keep us warm, and this fit the bill. This is a BIG unit, upon delivery, 2 people are needed to assemble. We connected to the whole house through an interlock kit in the main panel and monitored load, we just used it for the first time after Sandy roared through- we ran our critical circuits as well as the hot water heater, TV/DVD, lighting and the stove. We ran each heat pump independantly due to load (10000 watt aux)The unit perforfmed flawlessly except for a resonating heat shield I had to creatively rectify. We put 95 hours on during a 5 day blackout. The sound level is tolerable for overnight use, overall very pleased with the quality, performance, ease of use (love the electric start!) and that they are Made in USA. We are electricians so we did all the work ourselves,

I live in Puerto Rico, and since Hurricane María destroyed our power grid, almost 5 years later we are still having constant island-wide blackouts. The most recent in April, 2022, all the generating power plants on the island shut down due to a fire in a switch yard. Four days later, half the island is still without power, including us. I've used it once before during a brief blackout and it did well. Today it looks like we're going to be without power for at least another 24 hours (I had power restored two days ago but today it went out again). I plugged it in to the house with a manual transfer switch. Right now it's nightfall, and I am running two refrigerators, kitchen and living room lights, all ceiling fans running, and not a hiccup from the set. The electrician that installed the transfer switch says that if power doesn't come back later, I could turn off the refrigerators and turn on one bedroom inverter mini-split air conditioner. Thoroughly satisfied with this product. Thank you Generac. Now buying a whole house automatic propane or diesel set and/or a Powerwall with Generac seems like a wise investment. Until then, this GP6500 will do just fine.

Purchased the E7500 in 2015 during a week long power outage from a wind storm. It powered my furnace, lights, microwave, Keurig and toaster oven. It was 11 degrees F and very windy. I have used it several times since for minor projects. It starts every time with both battery and pull cord. It's on its second spark plug and battery. Love this generator.

This is my third season with this generator and thus far it has worked as it should. I don't have any experience with other generators and brands so I cannot tell how this specific model is relative to the others but thus far, it has not let me down. Some observations though. 1. The battery is on a trickle charger and this keeps the battery fully charged. This is a good thing because it takes a great deal of effort, at least for me, to use the manual start. 2. This one is a gripe. The manual states that old fuel should not be kept in the fuel tank. I get it. However there is no easy way to drain the fuel! I use a hand pump to remove the old fuel at the end of each season. Generac could have easily added a de fueling valve to its gas tank.

[This review was collected as part of a promotion.] I turned off the power in my home to test this generator out. Needless to say, I'm very impressed. It took quite a bit of gas to fill up, but it didn't burn through it at all. I let it run for an hour and I couldn't tell that any gas was used. I live in a three bedroom trailer. This generator let off enough power to keep my central air running and my refrigerator going as well. Assembly was extremely easy and laid out very well to understand. The portable feature is amazing as well. Overall, I'm extremely satisfied.

Bought GP8000E in Feb 2025. Only had to use 4 times, had no problems until now June 20, 2025. Now one of the GFCI output units keeps tripping after 7 seconds with nothing plugged into it. The reset button keeps popping out. Tried pushing the reset button also. The GFCI is bad, this problem should not be happening after only 4 uses. The unit is only 5 months old. Generac reports they have none of these GFCI units in stock and do not know when they will be available to ship. Generac service dealer tells me I need to leave the unit with them and possibly in 2 to 6 weeks they may get an new GFCI unit. UNBELIEVABLE !!!