Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
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
3,454 ratings3,413 reviews
  1. 5 stars85% (2,946)
  2. 4 stars9% (316)
  3. 3 stars3% (93)
  4. 2 stars1% (20)
  5. 1 star2% (79)

Member photos

  • +148 images
Sort by |
Showing 101-110 of 3,413 reviews
May 2, 2026
Tamason
5 out of 5 stars
5 out of 5 stars review

Well spent money.

Love my new Generac, I feel so much better knowing that I'll have power during a power outtage. I live alone and it has given me a great security knowing I'll taken care of. The guys that installed it was fantastic!!! Very VERY professional. I highly recommend GTI Generac power systems.

Review from generac.com
Helpful?4J7FW5DJ5Z5113606214426
May 22, 2026
Rural1
4 out of 5 stars
4 out of 5 stars review

Does the job well!

I have had it for a year now, and of course there has not been a power outage since the installation. However I did decide to run a simulation of an outage and was very happy with the results. My only issue is the description provided on Generac's website, makes it sound like the noise level is just above the level of an air conditioner. If I had an air conditioner that loud, I would be worried!!

Review from generac.com
Helpful?4J7FW5DJ5Z5113606214426
Apr 18, 2026
Jjj210
3 out of 5 stars
3 out of 5 stars review

Bought 2 months ago and not satisfied ,Contractor had to Come 4 weeks straight to deal with low fuel pressure fault/shutdown during weekly exercise. Not very confident that generator will work properly during loss of power due to these issues Contractor who installed where outstanding

Review from generac.com
Helpful?4J7FW5DJ5Z5113606214426
May 29, 2026
Rolidnot
5 out of 5 stars
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
Helpful?4J7FW5DJ5Z5113606214426
May 17, 2026
Stan
5 out of 5 stars
5 out of 5 stars review

So far, so good!

I have had my generator for about six weeks so far. The installation was quickly and efficiently accomplished. The installation team answered all my questions and explained the operation of the unit. So far, the only experience I have with the unit is when it tests itself every week. I have yet to experience an actual power outage and run on my home on generator power alone.

Review from generac.com
Helpful?4J7FW5DJ5Z5113606214426
Jun 5, 2026
MYKE
3 out of 5 stars
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
Helpful?4J7FW5DJ5Z5113606214426
Jun 4, 2026
RSFaris
5 out of 5 stars
5 out of 5 stars review

So Relieved and Happy

Running now for a year. We have had power outages while away. It was great not worrying about the basement flooding. We have also had a couple long term outages and it's nice not having to pull out our gas one and set it up. We didn't go for the whole home. We have our furnace, well, sump pump, septic, freezer room, kitchen fridge and some outlets. We also have my aquariums running on a circuit. Well worth the money

Review from generac.com
Helpful?4J7FW5DJ5Z5113606214426
Jun 1, 2026
Lyle 61
5 out of 5 stars
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
Helpful?4J7FW5DJ5Z5113606214426
May 3, 2026
Kent W
1 out of 5 stars
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
Helpful?4J7FW5DJ5Z5113606214426
May 7, 2026
KamiJ
5 out of 5 stars
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.

Review from generac.com
Helpful?4J7FW5DJ5Z5113606214426