We purchased and installed our 22 KW generac with the automatic transfer switch about 7 months ago and have used it twice. It worked exactly as advertised. Power was restored within 15 seconds and provided clean, dependable power to the whole house. When outside power was restored, the transfer back to outside power was seamless and the unit automatically shut down.

Just had it installed Tuesday so can't really comment to much on the working product yet but everyone I know loves theirs but I will say the company that put it in for me Weekly Electric of Newark Ohio did a wonderful job of installing it and answering all my questions and they went over all the aspects of how it works and what I need to do.

Power goes off generac generator system powers the whole house. Quiet and efficient. My wife and I dreaded power outages​ before never knowing how long before we regained our power. Now it's wow why did we wait so long. It's a great investment for peace of mind.

Service beyond the sale was great though I was given some confusing information from the the company recommended technician who serviced the product post installation. The 22kw generator was set up with parts supplied with the generator and was set up by an electrician as part of my new home build. Long story, short, there was a flex gas line supplied by the company to be used to connect the generator to the hard pipe gas line from my propane tank. The tech told me in no uncertain terms that the flex pipe was inappropriate to connect the main gas line to the supply line as the vibration caused by the generator could cause the flex line to fail and should have been hard piped directly to the generator. The propane supplier disputed that theory and told me that vibration caused by a hard piped connection would be more likely to crack and lead to either a fire and or explosion than a connection made with the flex pipe that was supplied with the generator. Otherwise, so far I'm satisfied with the product and follow up service that was provided.

At first I was suspect with all of the bells and whistles of this generator, but last fall and so far this winter, it has kept my home functional and safe from intruders who prey of power outages. I have discussed this generator with my neighbors, they too plan on buying one.

We live in a forest. Ice storms and heavy snow can take out electric for days at a time. With our generator the unbelievable inconvenience is a thing of the past. We spend the winter in Florida so use the cell phone system to notify us whenever it starts or more importantly whenever it doesn't. So far it has started every time but it is good to know that I will know if it doesn't start up.

We live about 27 miles outside town and loose electricity an average of 10 to 12 times per year ranging from a few minutes to several days. We bought the 22kw version of the Generac whole house generator in November 2016 it been just over a year now and I must say WOW. Not only can you not hear the machine while in the house, with such a quick response time when the power goes out you miss very little. It takes a minute for the generator to come on, and when it does you back to normal. This was by far the best money we spent in a long time. Great product, I tell everyone who asks this is the only one to buy.

I live remote in the country with lightening storms and power outages. Recently a widow, it was frightening to go through these events in the dark. Now I feel secure as in seconds the power is full on and I am back up and running with lights, water(on a pump system) and even central air!!

I got this generator when I bought my house. The previous had purchased but never hooked it up. After being without power for 9 hours at 0 degree temps I decided to finally bite the bullet and it was one of the best things I've ever done. Now I don't have to worry about my freezers while I'm gone and will have heat when it's 0 degrees. I also have a well so no power means no water. This unit sat untouched for 2 years. After I hooked up the gas piping and put in a battery it fired right up.

Our 22KW has been installed a few months and already run a bit over 60 hours so enough use cycles have been experienced to let me recommend this unit to anyone looking to protect their home or business from periodic, even frequent, power outages. The only points keeping me from providing an unreserved five star rating are these: The unit looks fine: functional and solid. It is loud! Focusing the noise away from your house/business should be a consideration in placement. (Probably many generators of this size and construction have similar issues but I am more aware now!) The whole house transfer switch is critical and buying this as part of the generator bundle is a great value. No matter who you choose to do the installation (from DIY to independent contractor to Generac Recommended), be aware a proper installation requires expensive wiring; potential ground excavation; and a very competent electrician comfortable in all aspects of electrical wiring; general contracting and local building codes. This too is something any generator/transfer switch install will require, but be very aware installation can be a SIGNIFICANT cost of the total project. Finally, I don't have the add on unit which allows internet alerts (I am considering this additional expense), but I think it would be very convenient. The unit functions with minimal maintenence and has smart diagnostics, but being alerted remotely would be a real plus. I think this functionality should be built into the unit in today's age at some marginal added cost. (Adding this to every unit should bring the cost down to almost nothing for the manufacturer.) Overall, very pleased with the unit, build, design and value. Were I to make a purchase again, I wouldn't hesitate to buy from Generac. (In my location and situation I would/should have done it sooner!) I actually overbought for my situation. My home would likely work fine on a 16 KW, but on advice from knowlegable friends, it is always better to "overbuy" and not tax the generator than risk running at 80-100% capacity on full normal load. There are also some benefits to certain units. Shop for your needs now and in the future. This should be a great long term investment in your piece of mind and your property. Good luck!