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Customer reviews for 26,000 Watt Generac Standby Generator with 200 Amp Automatic Transfer Switch for
26,000 Watt Generac Standby Generator with 200 Amp Automatic Transfer Switch
4.8 out of 5 stars
stars
3,373 ratings3,370 reviews
  1. 5 stars86% (2,886)
  2. 4 stars9% (309)
  3. 3 stars3% (89)
  4. 2 stars1% (19)
  5. 1 star2% (70)

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Showing 91-100 of 3,370 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
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May 14, 2026
Anonymous
5 out of 5 stars
5 out of 5 stars review

Great Features and Reliable

It has been very reliable and we are very happy with our investment and equally happy with Genesis Electric install and assistance! If you've ever been without power for a prolonged period, you know how important it is to have a backup system, and especially important as you age for safety reasons.

Review from generac.com
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May 20, 2026
scam
1 out of 5 stars
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
Helpful?269ZCGBEELYI13951414260
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

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May 21, 2026
Kosmas
4 out of 5 stars
4 out of 5 stars review

26 kW backup generator

Again, my problem is with the electric company that installed it rather than the product itself. But unfortunately, I have not had the support that I would have requested. I.e. asking for a quote for the extended warranty never getting one if Generac can offer that to me now I would be receptive.

Review from generac.com
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May 16, 2026
InTheWoods
4 out of 5 stars
4 out of 5 stars review

Generator works fine - WiFi unreliable

The Wifi connection had to be replaced with a module that allowed for Ethernet connection cable. All customers I talked to tell me the same issue. The Wi-Fi will not connect and stay connected. When we have had shorter power outages, I would like the generator to wait at least 20-30 minutes before going back to Utility. It has to be much harder on the equipment going on and off too many times an hour. It has operated fine otherwise.

Review from generac.com
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May 19, 2026
John M
4 out of 5 stars
4 out of 5 stars review

Nice, dependable system

We replaced an older “essential” circuits Generac generator with a 24kW whole house system. Very happy with both the installer and the new generator. If I would change anything on it, it would be the lid (very flimsy) and it would be much nicer if it were quieter. Other than those two items we're very happy with everything.

Review from generac.com
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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?269ZCGBEELYI13951414260
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?269ZCGBEELYI13951414260
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?269ZCGBEELYI13951414260