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Customer reviews for Generac 18kW Home Standby Generator with 200 Amp Transfer Switch for
Generac 18kW Home Standby Generator with 200 Amp Transfer Switch
4.3 out of 5 stars
stars
58 ratings58 reviews
  1. 5 stars78% (45)
  2. 4 stars5% (3)
  3. 3 stars3% (2)
  4. 2 stars0% (0)
  5. 1 star14% (8)
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Showing 21-30 of 58 reviews
May 22, 2026
Reviewer name: Wow1
4 out of 5 stars
4 out of 5 stars review

Right out of the box!!!

I had installed Apr 22 2026 bad control panel finally working properly May 20 2026 a lot of money for a product to need repair right out of box. Not sure about its quality guess we'll see

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Jun 14, 2026
Reviewer name: Araxos Power Pro
5 out of 5 stars
5 out of 5 stars review

Generator is great! Mobile Link app….not so much.

The unit was installed on a Friday and we lost commercial power for 23 minutes the following Monday. The unit operated flawlessly! The only drawback I’ve found is the inability to see realtime unit loading and voltage in the Mobile Link app.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Aug 13, 2026
Reviewer name: no no
5 out of 5 stars
5 out of 5 stars review

We had it installed for one simple reason. My wife is on oxygen and we can not have a power failure endanger her life and wellbeing.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
May 8, 2026
Reviewer name: Rich330
3 out of 5 stars
3 out of 5 stars review

Disappointed Multi-Generator Customer

Generator delivered with poor communication device, poor dealer service/response, poor Generac support for Mobile link, and poor support for code clearing

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Apr 3, 2026
Reviewer name: greg b
5 out of 5 stars
5 out of 5 stars review

so far so good

have had it for a month and no complaints. hasn't kicked in yet since we haven't lost power. so will tell then. yes it's got some noise to it but you can still sit on the deck and talk if it actually has to run.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Mar 31, 2026
Reviewer name: Living in Paradise
5 out of 5 stars
5 out of 5 stars review

Comforting to know we are prepared!

I had my unit was installed in April 2025 and it has been used 3 times during power outages so far. Knowing that we are protected and ready for in the event of a power loss is so comforting.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Apr 18, 2026
Reviewer name: Angry
1 out of 5 stars
1 out of 5 stars review

Doesn't run! Doesn't work

15 plus thousand dollars waste of money. Our contractor called the generac service tech at our home 04/17. Unable to reach the generac service tech after the contractor spent most of the day at our home trying to get the generac generator to run.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Apr 15, 2026
Reviewer name: Carol
5 out of 5 stars
5 out of 5 stars review

Outstanding reliability

My unit is 2 years old and has functioned during outages and twice a month exercising. It is reliable and provides a safety net for me during any kind of outage. The automatic transfer and start up/shut down make operation safe and reliable.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Nov 7, 2025
Reviewer name: OhioNY2025
1 out of 5 stars
1 out of 5 stars review

Paperweight at Best

Just purchased the 18kw cellular 15 October 2025 by a Generac dealer. Unfortunately my Propane company couldn't set the tanks until the next morning. The Generac dealer hooked up a 20lb tank to run me through the functionality of the generator. After the Propane company hooked up the tanks to the supply line to the generator, I performed a power outage to ensure there were no issues. The unit lost wifi connectivity. I attempted to reset, but it wouldn't connect. I contacted the dealer/installer and he attempted to connect to the generator. He couldn't, so he walked me through a hard reset. We did a hard reset and was able to Bluetooth connect with the generator and reestablish a wifi connection. On 26 October the generator had an internal fault and a 1505 error. Then it had a CANbus error. It also lost its WiFi connection. I attempted to reconnect it, but it wouldn't let me Bluetooth connect. I had to do a hard reset. I was able to reconnect the WiFi but as soon as I closed the app, it would disconnect from the WiFi. Attempted to reconnect again, same result. Tried again and the unit wouldn't reconnect via Bluetooth. Did another hard reset the next day and was able to reconnect the WiFi. An hour later it disconnected from the WiFi. Contacted the dealer/installer.He had me do a power outage to see if the unit would run. It didn't even though it is in Auto. He had me clear the faults by depressing the Off button for 15 seconds and attempt another power outage after placing it back in Auto. It did not run again. The unit did one exercise run-up on 25 October and has not done another one since even though it is in Auto. A lot of money for what I consider a paperweight and at a minimum a lemon. Waiting to hear back from the installer/dealer when he can come out to fix it. It's was only two weeks old with less than 15 minutes of run time.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421
Sep 5, 2026
Reviewer name: Tree God
5 out of 5 stars
5 out of 5 stars review

Great unit and overall experience

Overall, I'm very pleased with this unit! Everything exceeded my expectations.

Review from generac.com
Helpful?2MFUGGDGXJBG19966162421