I wired the generator up to the house and tested it out. Ran everything including a 3.5 ton AC. Now ready for the inevitable South Florida Hurricanes. Unit started right up after I replaced a 4 year old battery that was completely dead. One of my best purchases.

I purchased and received my GP15500 EFI on July 11, 2023. I purchased the unit to supply supplemental power to my home, as we experience frequent multi-day power outages due to severe weather. As of yesterday, 07/29/23, we were subject to severe weather and lost power. I fired the generator up and started supplying power to my home. The unit worked flawlessly for 10 hours, getting me through the night. Woke up this morning, 07/30/23, and shut the unit down to let it cool before refueling. Went to get more fuel and when I returned home (30 mins later) I found that the top portion of the fuel tank imploded and collapsed on itself. I am in complete disbelief. This was supposed to be a reliable piece of equipment and at $4,000.00 I expected more. Yes, the unit is covered under warranty. However, no Generac certified repair shop is open on a Sunday and I estimate not having my equipment back for several weeks, figuring new parts will have to be ordered. The unit was assembled and maintained according to the manufacturer's manual (i.e, oil level, fresh fuel, proper storage, etc.) And only has 11.2 hours of run time. I went with Generac because of their exceptional reputation but now regret my purchase, as I have a $4,000.00 paper weight and no power. I may update this review once my equipment is repaired but fear I will run into the same issue in the future. I tried to add photos but I am unable to do so.

I have not started the generator yet but in getting it ready I've identified a few disappointing aspects. First and probably the biggest disappointment is the requirement to measure valve clearance at every 50 hour interval. The owners manual informs you this is pretty complicated (without describing the procedure) and suggests you have a qualified dealer do it (...did I mention the requirement for every 50 hours of operation?). The generator came with a note indicating the unit is "shipped without oil" and they supply 2 quarts for the required 1.7 quart capacity. When I poured the first quart in, the oil level was well above full on the dipstick ….indicating the engine was not even close to empty of oil. I also found the assembly instructions to be near non-existent because the exploded view of the assembly was so small in the users manual; also - it did not reference torques for any bolts or wear lock washers vs. nylon nuts should be used. I also noted two wires stretched very tight across the oil filter - which needed to be disconnected and re-connected following a less stressful path. I truly hope the generator will work well despite these initial findings.

I opted to buy a portable home back up generator opposed to a built in because of the versatility. It will do the job of a built in but I have the option to use it for other things as well as loaning to someone else if I haven’t lost power in the event of a hurricane or other natural disasters. Upon delivery I was impressed with the ease of set up and overall performance of the generator. I expected it to be very loud but was actually surprised that it was not unbearable. Overall very happy with the purchase and not as anxious with the upcoming hurricane season starting.

We are up grading from a smaller 3.5 kw generator.This one has the 120/240 receptacle to be able to power our house during an outage. Installing a transfer switch so it is easier to use and safer for the linemen repairing the lines. This will allow me to run my air compressor. I put it together added oil, gasoline, and gave it a pull. Started right up.

I purchased this generator to replace one that i had for 20 years. So far i have used this one twice. Once for two hours and the second time for 13 hours. Easy to start and runs great. Just wish iy was a little quieter. But that is not a negative. If this one last as long as my last one i will not live to see its end. I had a Generac 7500 watt that lasted for 20 years and ran for 21 straight days and nights during an ice storm. It did not quit i killed it my not paying attention to what i was doing. I hope this one will last as long. I highly recommend Generacs.

We have been thinking of a whole house backup but waited a little long, Irma hit. I ended up picking up a generator as I traveled back to FL as all the ones in town were gone. I was looking for a large enough one to run our well and refrigerators as long as needed to get power back. I arrived back to the house the day after the storm there was no power. So I opened the box and added the oil provided in the box, added gas and connected the battery, also provided in the box, turned on the fuel and slid the chock lever and hit the start button. the generator fired right up and we had power again. It was a good experience and easy to set up. We have had no problem so far.

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.

the 7500e arrived on time and within an hour it was setup and tested. it starts immediately and purrs like a kitten. when we did a load test we were happily surprised. the watt meters showed that we could comfortably operate our home with power to spare. the value we derived from this purchase will give us years of electrical security. thanks Generac for a product well done1

Bottom of box and pallet was taped to pallet. I signed off, delivery driver drove off. 3 hours later, at 6:30 pm I took off the tape to see that somewhere in the process the tape was used to cover up a number of big holes and the powder coated frame was scraped up in 5 places. The battery tray flange was bent. Forklift damage I assume. I'm asking retailer to contact Generac and get me touch up paint to avoid rust... and a return.... I'm in the process of breaking it in. Lets see how Generac handles this, and I'll report back. Somebody tried to cover up a mistake, and it does not reflect well on the brand.