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Guardian 3-Phase Air Cooled w/WiFi Connectivity 20000 -Watt Dual Fuel (Liquid Propane/Natural Gas) Home Standby Generator

Ratings & Reviews for Generac Guardian 3-Phase Air Cooled w/WiFi Connectivity 20000 -Watt Dual Fuel (Liquid Propane/Natural Gas) Home Standby Generator

4.8
3106
Review
 4.8 out of 5
3116 Reviews


97% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The Generac home generator is a reliable and dependable product that provides convenience during power outages. Many customers report the generator has performed flawlessly, automatically powering their entire home. Key features praised include the automatic transfer switch, WiFi connectivity, and quiet operation. While a few customers experienced issues with defective parts or long repair times, the majority of reviews are overwhelmingly positive about the generator's quality and performance.

Customer review summary generated by AI, including incentivized reviews.
3116 Customer Reviews

Dialysis Patient

I am a home dialysis patient, so I need to have electricity to complete my treatments. Whenever the electricity goes out, or even flutters, the Generac automatically kicks on and I never lose power. My only concern was the installer didn't stick around to help me set up the mobile link app on my phone. He had somewhere else to be but said someone would contact me to set it up. It's been a year and still no help with mobile link set up.

April 30, 2026

From generac.com

PEACE OF MIND

Would Recommend

We are so very happy to have our new generator. It's a peace of mind that we never had before. The WIFI and app really make it easy to use and also to know if any maintenance is due as well as testing itself every week. We love it!

April 30, 2026

From generac.com

Generac Home House Generator

Would Recommend

I recently purchased the 18k whole house generator due to the recent weather events and various power outages. I like the Generac reputation as well as the warranty.

April 30, 2026

From generac.com

Great features

Would Recommend

We bought this generator a month ago. Installation was completed in a timely manner. Weekly tests are conducted and haven’t experienced any issues.

April 30, 2026

From generac.com

newest version and working great

bought about a year ago but didn't get installed until fall of last year had a master electrician out here to get thing done right and approved by inspector and W.E. . programed and bingo all weas well an operating as it should

April 29, 2026

From generac.com

When power went out so transfer to generator really wonderful working

April 29, 2026

From generac.com

The feeling of safety and security...

Would Recommend

We bought this generator a year ago when we built our new house. It was one item that my wife and I wanted to be sure we had whole house coverage during any electrical outage, being that our new house was almost all electric.

April 29, 2026

From generac.com

Works

Would Recommend

I’ve had it for maybe a month & experienced 1 outage & was satisfied

April 29, 2026

From generac.com

Response from Generac Support

Thank you for sharing your experience. We are glad to hear your generator performed as expected during your recent outage, that reliability is exactly...

Generac SupportMay 6, 2026

26k Generac

Would Recommend

I bought my Generac a year and a few months ago. I has been a good investment for my home.

April 29, 2026

From generac.com

Question my decision

It was installed a week and half and there is a fault

April 28, 2026

From generac.com

Response from Generac Support

Experiencing a fault so soon after installation is understandably frustrating, and that is not the experience we want for our customers. As a first st...

Generac SupportMay 6, 2026

Love my Generac!

Would Recommend

I purchased my Generator 11 months ago. It works as it should .

April 28, 2026

From generac.com

Great Features

I bought this a month ago and am glad I did. I feel secure.

April 28, 2026

From generac.com

22K

Would Not Recommend

Hope it will be there when I need it, time will tell. Poor track record.

April 28, 2026

From generac.com

Response from Generac Support

Thank you for sharing your feedback. We understand your concern: reliability matters most when you need power the most. Generac products are designed ...

Generac SupportMay 6, 2026

Hesitant at first

Would Recommend

I didn’t want it but my wife did. I said we won’t need it very much. After it was installed, there were 2 weekends in the following month that we needed it the whole week end. I changed my mind on our need of it. Ran everything we used.

April 28, 2026

From generac.com

Dependable

Would Recommend

This is my third move in the Province of Alberta in the last 12 years. In each of these premises, a Generac was installed. They are reliable when needed.

April 28, 2026

From generac.com

New Whole house generator

The generator does what it is suppose to do very well, it's been a savor for a couple storms and power outages. But I have been made aware that the generator should be shut down after prolonged outages intermittently. Which I'm trying to understand what one does when you're away for a prolonged period of time and there is a prolonged outage while you're away?

April 27, 2026

From generac.com

Would Recommend

Too soon to know since we have not a Outage but so far the test are running good

April 27, 2026

From generac.com

Rock solid and there when you need it!

Reliable and great mobile app. Upgraded from an older less powerful Generac and glad we did! We have a B&S unit at another property and it is junk.

April 27, 2026

From generac.com