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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

Runs quieter and has great App features.

Would Recommend

We bought this 24KW four months ago and was only able to get it installed a month ago. So far we're very pleased with it. We bought a 22KW Generac 20 years ago and got a lot of usage out of it in south Louisiana. Back then it was referred to as a "whole house generator" but we soon learned that didn't mean you could run "everything" in the house on it. It running under a load because of a power outage and my wife was running the clothes washer, dryer, microwave, the electric oven and all the lig...

April 9, 2026

From generac.com

Would recommend.

I had the 26KW unit installed almost one year, experienced twice power outages, the unit turned on automatically. It served the purpose as expected.

April 8, 2026

From generac.com

If you have the extra money, put it to GOOD use!

Would Recommend

We have had the unit for about 10 months. It now tests twice a month for 10 minutes self checking and keeping the oil moving around. We had an outage the week after it was installed while we were away. I received a notice of it working, via the app, as it was supposed to do. We have had two other outages last year. The unit performed perfectly. So far so good! I had a year of complimentary wireless coverage. I just signed up for the next year. While not really a cheap benefit, it is nice to have...

April 8, 2026

From generac.com

Ease of mind.

When installed we were very pleased. In the past year it was only needed for a few hours but the ease of mind is well worth it. Sound is a bit loud and weekly testing is very reliable, The wifi needs improvement when the signal is lost. It is a bit difficult to reconnect. Our installer was excellent.

April 8, 2026

From generac.com

Never Worked

Piece of crap. Never worked when needed. Continues to give default message. Either a lemon or improperly installed.

April 8, 2026

From generac.com

Response from Generac Support

What you've described here does not align with the reliability we aim to deliver. Issues like repeated default or error messages may point to a proble...

Generac SupportApril 13, 2026

Good quality

I purchased a month ago and haven't had to use it.

April 8, 2026

From generac.com

purchased in nov of 24 - exercise clock runs every friday at 4 - never missed - run for outages maybe 4 times and transfers in and out no problem

April 8, 2026

From generac.com

Just do it

Would Recommend

I was hesitant to purchase this at first. My wife insisted that we do. Since purchase we have had 2 major storms and the Generac has performed flawlessly. The whole valley was without power for 2 days and we were eating popcorn and watching Netflix. I will say that we can hear it running when it comes on, but it's a small price to pay for comfort.

April 8, 2026

From generac.com

24KW in Ohio

Would Recommend

Everything works as planned. My install was April 2025 and I just had an event in March 2026 where the unit ran for 24 hours consecutively. No issues. And very little oil usage. My recommended installer is 5*.

April 7, 2026

From generac.com

Best investment.

We are very happy to have this generator. It also has made our property added value. Good for resale.

April 7, 2026

From generac.com

Love our Generac❤️

We have been thinking about buying a Generac for years. So glad we finally did! Our neighbors had their installation done in 2018. Every time a storm caused an outage, they were completely comfortable, up and running! It has made us feel much more secure with the hurricane season coming.

April 6, 2026

From generac.com

Peace of Mind in my Yard 💯

Purchased for peace of mind Lee Upchurch Upchurch Builders Absolutely Best Experience Ever Price, Communication, Timeline, Execution

April 6, 2026

From generac.com

Peace of mind

Bought my Generac after an ice storm and a tornado. We have only had to use it once since it was installed. Knowing I can heat and cool my home as well as protect my pool pumps and hot tub equipment from freezing is well worth the investment!

April 6, 2026

From generac.com

Performs extremely well.

Would Recommend

I am one week away from my first year having the Generac and it has performed ad expected.

April 6, 2026

From generac.com

Great features

Excellent product, service and followup from Snyder Electric.

April 6, 2026

From generac.com

Solid Unit

Would Recommend

I have had my unit installed for 731 days. Through 2 power outages it performed well. The first one lasted for several days; shutting it down to rest and change the oil was easy. Being able to monitor the unit with the mobile App is a great feature.

April 6, 2026

From generac.com

50/50 feelings

I wish I had better things to say but I feel the company that installed the unit did a poor job the unit leaks oil and when I told them about it on the 1st maintenance visit, they wanted charge me extra this was part of the installation and has been leaking ever since . Other folks may have a better experience with this brand I think it was just the company that has installed mine .

April 6, 2026

From generac.com

Response from Generac Support

Thank you for sharing your experience. We’re sorry to hear about the installation and service issues you’ve described—experiencing an oil leak and bei...

Generac SupportApril 7, 2026

Easy to use

Would Recommend

Great company for install from start to finish. Works great. Hope it is never needed. All team members were polite and organized. Always showed when they were supposed to.

April 6, 2026

From generac.com

Now we have peace of mind in a storm

We bought our Stand by Generator recently and we are delighted with our purchase. I don’t have to dread dragging my walker over the extension cords in the floor when the power is off. Now we simply go on as usual after a few seconds. Thank you Generac and Mr. Allen of Allen Residential Electrical for giving us peace of mind in stormy weather.

April 6, 2026

From generac.com