Generac Guardian 7042 22kW review
Generac Guardian 7042 22kW Home Standby Generator with WiFi Monitoring
By Tom Calder
A 22 kW Generac Guardian standby generator for natural gas or LP, with Mobile Link Wi-Fi monitoring. It does not include a transfer switch. Generac recommends installation by a certified and licensed electrician.
- Best for
- 22 kW standby with Wi-Fi monitoring
- Skip it if
- You want a transfer switch in the box
as of Nov 14, 2026, 5:36 PM ET · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.We earn a commission if you buy through the retailer links on this page. It doesn't change our verdict. How we make money →
Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- Wi-Fi monitoring
- Quiet-Test self-test mode
- 5-year limited warranty
Worth knowing
- Transfer switch not included
- 466 lb, professional installation needed
- Rated output for each fuel not stated
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Who shouldn't buy this
Don't buy it if you want a transfer switch in the box: this one does not include it.
Key specs
| Rated output (listing) | 22,000 W |
| Transfer switch | Not included |
| Fuel | Natural gas or propane |
| Weight | 466 lb |
| Warranty | 5-year limited |
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the US price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for Whole-house standby, 10-year warranty
as of Nov 14, 2026, 5:36 PM ET · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Best for A whole home with central air
as of Nov 14, 2026, 5:36 PM ET · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Best for A large home that wants a second brand besides Generac at the 26 kW size