My new whole house generator was installed a month ago. After living with frequent power outage for years, we decided to invest in a new whole house generator to be able to stop rolling out the portable generator, extension cords, flashlights and worrying about food in refrigerator and freezer. All that concern was in the past now that we invested in our new generator. The generator performed properly on the power outage test after the installation though we have now discovered that the power outage test should have been run for a longer time period, The weekly 5 min tests performed since installation ran properly but on the first power outage, the generator would not operate properly to provide power for the house requiring immediate service. During this first power outage, the generator ran for 7-8 minutes and shut down. My installer came that evening, did some troubleshooting and eventually replaced the brand new Generac air filter with a new air filter (not Generac) as the generator would not run properly with the OEM supplied air filter. The engine would run ok for the first few minutes but then would begin to surge after 6-7 minutes and begin to exhaust what smelled like un-combusted natural gas. The exhaust pipe was getting hot enough to see the metal change temperature before the engine would shut down. The ecode was 5101 Engine speed. Its great that the design of the generator engine has the capability to protect itself and protect homeowners if the generator is exhausting un-combusted natural gas near your home. It is not great that Generac is selling generators with questionable quality air filters. Folks that I know who have owned Generac generators for years, all provide solid reports about the performance of the Generac brand. Keep the oil changed regularly with premium oil, use a premium oil filter, a premium air filter, verify oil level especially after or during extended power outages and check on the battery; by doing these things your generator will provide years of service for your home. Feedback is that Generac knows that there is a quality issue with their supplied air filter. If you purchased a new large whole house generator, mine is the 22KW model, check your air filter. If its a Generac brand air filter, model number 0J8478 with labeling indicating Flame Retardant, do yourself a favor and replace it with a premium air filter. This air filter may be or is starving the engine by not allowing sufficient air flow into the engine. My brand new generator with the factory installed air filter restricted air flow sufficiently to make the exhaust pipe hot enough to begin to glow and fortunately shut the engine down. If you have the above air filter, replace it with a quality air filter to help ensure your generator is operating properly. Will have to wait and experience the next months and years to see how my generator performs. Initial experience was not positive but Generac is known to be a good brand. Unfortunately, it seems that there is a quality control issue with this air filter. Hope that the remainder of the generator lives up to the solid Generac reputation.

I purchased this 22 W backup generator about a month and a half ago and hope it works when I really need it. The installation went well and on time however I was not given any instructions on how the generator works or what I should do other than calling them if there’s a problem, I was given no information on how to set up the monitoring app on my cell phone at all so I have it on and I guess it’s OK but that’s about it.

We purchased ours a few months ago and had it installed about a month. We were going to use the existing switch we have with our solar panels and the EG4 batteries but come to figure out we had to get the switch installed by the company that installed our unit because the place to connect to the EG4 inverter was being used by one set of solar panels that was running on AC. If that set of solar panels was DC like my other set of solar panels then we could have used the EG4 inverter and saved a lot of money. Installation was done without any complaints and looks very nice. We only had the unit come on for a check so don't know how it will be when the power goes down which just happened a few days before the unit was installed. But our EG4 batteries did just fine. Don't know how much more to say except we are running it from a new 500 Gallon LPG tank they installed just for the generator.

I bought this a year ago and didn't get the chance to use it until this spring - several times! The sense of security it gives me when the storms hit is priceless. I used to use a portable generator but the auto-pilot of my GENERAC saves time - and potential property damage. I have a sump pump and having it connected to this generator is worth it, besides all my other appliances !!

THIS IS MY SECOND GENERAC GENERATOR. THE FIRST WAS PURCHASED IN 2007. THERE MUST BE A CASE NUMBER FOR MY INCIDENT Mr. Aaron P. Jagdfeld Generac President 545 W29290 HWY. 59 Waukesha, WI 53189 SER. # 4975043 GEN-0F96530SRV Out of Stock $151.39 Generac; 2-16-2021 Can you participate in sending me what ever will work. This generator is ready to fall apart. Everything works fine but the base is disintegrating. Can you ask THE MAN if he can send me a new one ? I can do the work myself. Thank you.

I bought this generator and installation was attempted by a Generac “Elite” dealer and installer. Now, 3 weeks later, and after multiple attempts by the installer, IT STILL DOES NOT WORK! There are battery charging error codes and fuel delivery error codes. If it comes on during the weekly self test it shuts off after 4 minutes, the warning light turns red and it sends a warning that it won’t restart in an emergency. Don’t waste your money buying a Generac 22KW whole house standby generator. Look at other brands that actually work .

I purchased the 22Kw Generac Generator, which is being installed as I write this. This unit did not come with the 12v battery, which is required for the generator to start. I am a bit ticked off. After spending close to $6000 on this unit, now I have to go purchase a 12v battery. Generac should be selling a complete working unit when delivered. Would you buy a car without a battery?

I bought the 24kw unit with transfer switch from Select Generators in late April 2025. Install went well but had bad oil leak during 3rd hour of the 25 hour break-in period. Dealer and Generac replaced the engine. Since engine replacement the unit has worked great. Only had a few small power outages since install and the generator worked flawlessly to restore home power during each outage. Will see how it does with the 2026 hurricane season. The mobile link is also useful to see hour usage, battery status and history of exercises and outages.

Had this installed on 4/8, today is 5/20 and it still has never been working. Generac has been no help whatsoever, they're more concerned about selling their next generator, than trying to replace the lemon they gave me with a new one. I do not recommend at all!!

We purchased a brand new 2026 Generator. It is now April and the thing still does not work. Every time the power goes out ... the generator runs for 5 seconds and then shuts down and we get a "failed" message. Our installers (Blue Sky Plumbing) has said they have installed 23 of the these same generators and ALL OF THEM are having the same issue. I would not purchase a new generator again from these people and if we don't get our money back ($50K), we will be suing Generac.