Generac 7043 22kW Home Standby Generator Review


Come Home To The Generac 7043 22kW Home Standby Generator

When you need a generator to power the whole house when the power goes off, the Generac 7043 22kW generator is an awesome choice.

Well below the price of a similar liquid cooled generator, this is the largest air cooled home standby generator on the market today.  And, truly, I can’t believe how much power this one has and at such a reasonably low price!

Offering 200 amps, it is connected to the house through an automatic transfer switch featuring “load shedding.”  The transfer switch senses when the main power goes off and, within a few seconds, the generator kicks on – supplying power to all the house circuits.  The load shedding is a smart device that disables some circuits to allow other high surge appliances to kick on and start running – and then it re-enables those disabled circuits.

The Generac generator uses the home’s natural gas or, it can be set up for an external propane tank.

WiFi technology enables you to monitor the generator’s performance through your Smartphone or computer.



Even though the Generac 7043 touts supplying clean enough power to run sensitive electronics like computers and televisions, I strongly suggest using an uninterruptible power supply (UPS) like the CyberPower CP1500PFCLCD to protect your electronics.  Otherwise, the generator power may unintentionally produce a few spikes in the electrical circuit that these tender devices won’t like too well.  Better to be safe than sorry.


The Heart Of The Generac 22kW Generator

Generac 7043 22kW G-Force OHVI 999cc engine

The heart would be its G-Force OHVI (Over Head Valve Industrial) 999cc engine – built strong and solid – capable of handling not just hours of continuous running but days of it – effortlessly producing 22kW of starting (surge) power and 19.5kW of running (rated) power.

The generator casing is corrosion resistant aluminum with a special powder coated finish – to protect it in all types of weather.

Don’t forget the 5 year limited warranty that comes with it.


What About Installation?

Generac has company certified installation teams everywhere.  And, I recommend that you use them since they are highly experienced in all types of Generac installation situations.  It may cost a bit more but, it’s worth it in the long run.

Remember, you are purchasing a lot of machine that you expect to give you service for many years to come.  So, do right by it and make sure to give it a first class set up!


A Few Quotes From Generac Owners

Generac 7043 22kW home installation

“We chose the 7043 to handle the entire house in the event of an emergency power outage.  I really love the WiFi feature!”

“My neighbors are always stopping by to look at my Generac and each time I give it a glowing review.  I think many of them are convinced to get one for themselves!”

“Not noisy at all for such a large generator.  I would recommend it to anyone.”

“I was at a neighbor’s house when the power went out in our whole area.  After sitting in the dark with them for about an hour, I headed home.  Pulling into the driveway, I saw the whole neighborhood was dark but our lights were on and the generator was happily humming along while my wife was getting supper ready.  That’s exactly why I bought this Generac Guardian generator.”

“With my husband gone, I was a woman living alone in the country and, I needed a generator I didn’t have to start and refuel all the time.  After talking to some other widows about how the Generac automatically came on when power was needed, I knew that this was exactly what I needed.  Life is difficult enough for a woman alone and this product made my life so much easier.”

Generac 7043 22kW home installation

“The city where I live is in the middle of a population explosion and the infrastructure isn’t keeping up.  I knew it was just a matter of time before I started experiencing brown outs.  And, I have medical equipment that needs to be powered 24 hours a day.  Generac solved my problem and now I don’t have to worry anymore.”

“This 22kW generator is a perfect size for my house and garage.  It runs absolutely everything!  Now, I have pure peace of mind knowing everything is covered in case of a failure in the main electrical supply.”

“After losing power so much over recent years from tornados, hurricanes, and some very nasty snow and ice storms, I got tired of losing all our frozen and refrigerated food every time because sometimes the power would be off for a week or more at a time.  The Generac 7043 answered my prayers.  It powers my entire 4,400 square foot home without a hiccup.”

“When the power goes off, I count off just a few seconds and I hear the Generac engine start.  In less than half a minute, my lights are back on.  And, as I look down my street in each direction seeing everything so dark, I look back into my brightly lit house and smile.”


Time To Make A Decision

Do you want the safety and security of backup power so you can get on with your life with no worries?  I mean – really isn’t life too short to have to mess around with power outages?  If the answer is yes to both questions, then you are duty-bound to invest in a Generac 7043 22kW Home Standby Generator to protect your home and family.

For more great generators and lots of generator know-how, look over Generator Reviews.

I welcome comments from long time generator owners and even wannabe generator owners.  Or, emailing me is good, too!


Jim, the Lifelong Gardener


19 thoughts on “Generac 7043 22kW Home Standby Generator Review

  1. Jamiro Hazel Reply

    As a man who likes to be prepared, I love that you talk about this generator in your post. This generator is great if you live in an area where the weather is constantly changing and power outages are common.

    Growing up, the Generac 7043 would have been so ideal in my household because the power always went out in our neighborhood.

    Thanks for sharing. This generator look like it is safe and reliable. I will be sharing your site with my friends.

    • Jim Reply

      You’re absolutely correct.  If you live in an area with numerous power losses, the Generac 7043 would make your life so very much easier.

      Don’t forget about some of the other great generators to consider – listed on the Generator Reviews page.  Look them over before you make any purchasing decisions.


  2. Dhayours Reply

    I’ve been using generators for a long time, because over here, having stable electricity is something the government would not let us have.

    But I’ve not used a standby generator. I can see that this Generac 22kW standby generator is a great choice. Based on your review, I think I could recommend it for anyone.

    Thanks for sharing. This generator looks like it is safe and reliable. I will be sharing your site with my friends.

    • Jim Reply

      This generator is certainly an outstanding piece of machinery.  And, a standby generator is the way to go – especially if you have a large house or a large family.

      Take a look at the Briggs and Stratton 40396.  It’s another great home standby generator option.


  3. Michel Reply

    I think we need a generator like this. We get power outages so often it is scary, and it would be great to have a good solid backup.

    The best part for me is that the Generac automatically comes on, so you don’t have to fiddle around in the dark to try and get it started up, especially if I am home alone in the night. It’s not safe to go outside.

    When you say it powers a lot, could you give an example of how many appliances and lights etc you could run with the 7043 – 22kw home generator, please.

    • Jim Reply

      Hi Michel,

      There is a chart on the Generator Reviews page that explains both the running (rated) watts and the starting (surge) watts needed for most home appliances – including central AC, refrigerators, freezers, electric stoves, furnace fans, and more.

      Just look at what your needs are and total everything up based on the instructions given in Generator Reviews and that will give you a pretty good estimate –  if the Generac 7043 will meet your needs.


  4. Steve Tuggle Reply

    Hi Jim,

    I am totally with you on having a home generator.

    They sound expensive, but if you amortize the cost over many years, it becomes very inexpensive insurance against power outages that could result in far more expensive problems.

    And here is my funny story. During a major hurricane in Houston, we lost power in our house for about 4 weeks. Of course we didn’t have a generator and had to find a relative to put us up. My sister on the other hand, did have a generator. In the same storm about 15 miles from our house, she lost power for about a half hour. So we went to stay with her! Moral – Buy the Generac and maybe you won’t need it!

    • Jim Reply

      Hi Steve,

      Your moral makes a lot of sense.  Better to have the backup generator and not need it – than it is to need it and not have it.  You never know when that hour or two “inconvenient” power outage could turn into weeks – or even months.

      Learning the hard way is no fun!


  5. Louis Reply

    Seeing that I’m reading this review while living in Africa, I know how important generators are.

    The Generac 7043 does supply a lot of power. It can really serve as a good back up and in Africa this generator would be my first choice. It’s also a big plus when a generator comes with a low noise factor so no one is unnecessarily disturbed.

    • Jim Reply

      Hi Louis,

      The best quality generators all have low noise factors – and, the Generac 7043 leads the industry in quiet operating generators.

      I have heard that power in most African countries is prone to go off frequently – and, it’s mostly due to brown outs.  Storms come in a close second, however, as the antagonists.


  6. Henry Reply

    Hi Jim!

    I need a generator to power my whole house. 200 amps is fine for me. I like the fact that it’s just the right size for my garage and that it’s not noisy. The 5 year warranty is also good.

    Thank you for the suggestion of a UPS. I know these generators can unintentionally produce spikes. And it’s better to be safe.

    I’m glad I have all this information before purchasing. It helps me buy exactly what I need.

    • Jim Reply

      Hi Henry,

      You’re quite welcome.  The Generac warranty can’t be beat.  That’s for sure!

      But, don’t expect to put this in your garage.  This is an outside generator only.

      Unless your garage is actually an open type of carport, remember that putting any machinery that has an engine running on gas or LP in an enclosed environment is a recipe for disaster.

      The buildup of carbon monoxide fumes will make you sick as a minimum – and breathing in the fumes could be fatal.  I cover this in Generator Reviews so, please read it over carefully.


      • Henry Reply

        Thank you. Yeah, I’ll go right over to Generator Reviews and read it carefully. Thank you very much!

  7. freddie Reply

    Hey Jim,

    We often have a lot of storms come through here where I live. And lightning is prone to hit the transformers and cause our power to go off. This generator will really help me get through any electrical outage due to these storms.

    I think the coming home and knowing that the Generac 7043 22kw generator would give me a much more secure feeling and that is just what I need.

    This would be great for me and I plan on referring this generator to others, too.

    • Jim Reply

      Hi Freddie,

      Anyone living in an area with a lot of storms would be totally remiss by not having a dependable backup generator.  If there is even a slight chance to have outages only a handful of times every year, just think how much better we feel to have power to keep our food safe and be able to carry on – business as usual – while everyone else in the neighborhood are twiddling their thumbs – waiting to have power to get on with living.

      What would we do without electricity?


  8. Danette Reply

    We have considered getting some type of generator. Actually, one of our biggest concerns is the fact that we use well water, and if the electricity goes out for too long, we run out of water, too. We don’t have natural gas, so with a Generac generator we would have to use an external propane tank. How big would this tank need to be? And do you know approximately how many hours of use the Generac would have before more propane would be needed? 

    • Jim Reply

      Hi Danette,

      It’s definitely not good to run out of water, along with everything else when the power goes off.

      Standby generators use between 2 and 3 gallons of LP per hour.  So, a 500 gallon propane tank will last about a week.  Double the size of the propane tank – and, of course, you’ll double the amount of time it can keep you supplied with electricity.

      Another variable to take into consideration is how much load is on the generator.  A generator running at 50% load as opposed to 100% will burn LP at a much slower rate.


  9. Michel Maling Reply

    Thanks for your reply Jim.

    I was just worried that the generator might cause a power surge and cause damage to electrical appliances, but this doesn’t seem to be the case at all, judging by the other comments on this page.

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