Generac Generator
Guardian air-cooled and Protector liquid-cooled home standby generators, sized to your house and installed with permits.
Get a Generac QuoteWhich Generac generators do you install?
We install Generac's air-cooled home standby generators from 10 to 28 kW, including the Guardian series, and liquid-cooled Protector and XG units from 25 to 80 kW for large homes. Every unit runs on natural gas or propane, and the air-cooled models make a little less power on natural gas.
Authorized Generac partner
| Model | Propane | Natural gas |
|---|---|---|
| Guardian 10 kW | 10 kW | 9 kW |
| Guardian 18 kW | 18 kW | 17 kW |
| Guardian 22 kW | 22 kW | 19.5 kW |
| Guardian 24 kW | 24 kW | 21 kW |
| Guardian 26 kW | 26 kW | 22.5 kW |
| 28 kW | 28 kW | 25 kW |
Ratings from Generac's published specifications, October 2026.
What comes with a Generac install?
Who does the work?
Keep reading
Generac Questions
Are you an authorized Generac partner?
Are you an authorized Generac partner?
Yes. Boston Backup Power, a division of Boston Automations, is an authorized Generac partner. We size, permit and install Generac home standby generators across Eastern Massachusetts, Cape Cod and the Islands, Rhode Island and southern New Hampshire.
What is the Generac Guardian series?
What is the Generac Guardian series?
Guardian is Generac's line of air-cooled home standby generators, from 10 to 26 kW. Generac also sells a 28 kW air-cooled model, its most powerful air-cooled unit, and liquid-cooled Protector and XG units for larger homes.
What warranty does a Generac generator have?
What warranty does a Generac generator have?
Generac standby generators come with a 5-year limited warranty when they are bought and installed through a local dealer. Generac applies it after installation and activation.
What is Generac Mobile Link?
What is Generac Mobile Link?
Mobile Link is Generac's app. It shows whether the generator is ready, running or exercising, sends alerts when it needs attention, and lets you change the exercise schedule. An optional cellular accessory keeps it reporting when the internet is down.
How much does a Generac generator cost installed?
How much does a Generac generator cost installed?
Most home standby generators we install run $7,500 to $20,000, installed. A liquid-cooled Generac for a very large home costs more. The written quote covers the generator, transfer switch, pad, gas line, permits and installation.
How often does a Generac generator run on its own?
How often does a Generac generator run on its own?
A Guardian runs a short exercise every other week by default, and you can change it to weekly or monthly. The Quiet-Test exercise runs at a lower speed, so it is much quieter than a full-load run.
Get a Generac Quote
Tell us about the house and the fuel you have. We call to set up a site visit and a written quote.