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Customer reviews for 22,000 Watt Generac Guardian Series WiFi-Enabled , NG Standby Generator With 200A Automatic Transfer Switch for
22,000 Watt Generac Guardian Series WiFi-Enabled , NG Standby Generator With 200A Automatic Transfer Switch
4.7 out of 5 stars
stars
3,443 ratings3,402 reviews
  1. 5 stars85% (2,939)
  2. 4 stars9% (315)
  3. 3 stars3% (92)
  4. 2 stars1% (20)
  5. 1 star2% (77)

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Showing 731-740 of 3,402 reviews
May 29, 2026
Rolidnot
5 out of 5 stars review

Great longevity, NO issues for 20+ years

I live north of Buffalo, NY and we get some wild weather. 20+ years ago I had a 13kw partial home Generac generator installed I never had an issue with its operation for 2 decades. Due the age of the 13kw and hours I had on the unit - I added a manual hour meter; it was time for an upgrade. I chose the 18kw whole house with external whole house transfer switch. The dealer arrived with 2 installers and 3 electricians and knocked out the replacement installation in about 6 hours which was remarkably fast. It was also tiptop work and passed the town electrical inspection quickly. The new 18kw whole house Generac is totally next generation with the app connectivity, ease of access for service, upgraded all aluminum cabinet, sloped top to assist snow removal to the front of the machine away from the rear air intake and the included battery and oil filter heater and an AGM (absorbed glass mat) battery, not a standard lead acid battery ensuring top performance in very cold weather. The green status light on the side and even on the air intake is huge improvement as well along with app. The whole house function is worth the investment because I no longer have to guess which circuits are powered. My only concern is that the rear located air intake is a little too low to the ground for my comfort. The rear air intake is only 16 inches off the ground (see photo) and we can get 24 inches of blowing, drifting snow fast. With the low air intake could potentially get blocked with snow. I'm mulling some sort of a DIY snow guard near the air intake on the back of the generator. Perhaps a drift fence on both sides of the generator about 2-3 feet away. I also enabled a 7-year warranty on the new 18kw Generac as part of a promotion, a definite plus. Based on my 20+ years of Generac ownership and after seeing the remarkable upgrades on the 2026 whole home 18kw Generac unit I can enthusiastically endorse Generac automatic standby natural gas generators without hesitation

Review from generac.com
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May 3, 2026
steve24
5 out of 5 stars review

Worked flawlessly during each power outage

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.

Review from generac.com
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Apr 10, 2026
Threw16KDollarsAway
1 out of 5 stars review

Don’t Waste Your Money - Buy A Different Brand

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 .

Review from generac.com
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Jun 5, 2026
MYKE
3 out of 5 stars review

OLD GENERAC'S DID NOT LAST IN FL. SN 4975043

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.

Review from generac.com
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May 20, 2026
scam
1 out of 5 stars review

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!!

Review from generac.com
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May 3, 2026
Kent W
1 out of 5 stars review

Poor choice on my part.

We purchased it about 2 years ago and it pretty much has failed us when the need arises during storms or other weather in climate conditions. This was bought because I have a cpap machine and need it to sleep. Also to protect the contents of our freezer and fridge.

Review from generac.com
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May 23, 2026
Hazelbrand
5 out of 5 stars review

Generator performed perfectly.

We had a bad thunderstorm yesterday and lost power for a couple of hours. Our generator came on and worked perfectly. We would not have known the power was off and the generator had taken over if it had been for us hearing the generator running and the light blinking. I gave a 5 star rating because of the way the generator has performed even though I am still not happy about being put off about the damages,

Review from generac.com
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Jun 1, 2026
Lyle 61
5 out of 5 stars review

Reliable backup

If the power goes off during a storm it is sure nice sitting in the dark for 20 to 30 seconds and then the Generac fires up and our whole house power is back on. The only way to tell when the hydro power is back on is when the Generac shuts off without any interuption of power.

Review from generac.com
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May 7, 2026
KamiJ
5 out of 5 stars review

Quiet enough that I didn't know it was running.

I bought this last year when Michigan was out of power; yes, practically the entire state was out because of a massive ice storm. I was without power for 3 days, called the Genarac dealer and they installed the next day. There was a small problem, they installed the wrong size generator (18KW instead of the 22) but, because it was an emergency, they installed, but didn't bury the lines and set in the ground. They came back after the ice storm and replaced and reset. It runs for 5 minutes every Saturday. Good thing, a year later, another ice storm. Power went out and I didn't even know it. I woke up to everything running, including my robot vacuum. Wasn't till about 1/2 hour later that I realized the generator was running. My only complaint, after about 24 hours, I could smell gas (propane) in my house. I didn't know if it was just the fumes from the generator or if I had a gas leak from ice. But once the generator shut off, the smell went away. So, I guess it was just fumes.

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Jun 3, 2026
FredB
5 out of 5 stars review

Well engineered and assembled!

Although I have just had this unit installed a month or so ago, my wife and I are so happy of knowing that we will have power when there is an outage. The cool thing is that it is scheduled to run every 2 weeks for a few minutes. We have experienced this ‘run’ and it is very comforting to know we have a great solution in case of an outage. In addition, the noise level was outstanding!

Review from generac.com
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