FAQ

HOME STANDBY FAQS
Why should I buy an automatic backup generator instead of a portable generator?
During a utility power outage, an automatic backup generator provides numerous advantages over a portable
The American Red Cross recommends permanently installed backup generators as a safer way to provide backup
power to a home than a portable generator.
With an automatic backup generator properly installed outside, your home is protected from deadly carbon
monoxide poisoning that is a much greater risk with portable generators.
Running on the home’s natural gas or LP fuel supply, it is less expensive to run than gasoline and does not need to
They start automatically within seconds of a power outage, and eliminate the need to haul a portable generator
outside or run extension cords throughout your home.
They provide protection 24/7, whether you’re home or away, and they turn themselves off when utility power
returns, so there is no need to monitor the unit during an outage.
What is an automatic backup generator?
An automatic backup generator is a back up electrical system that operates whether you are home or away. Within
seconds of an outage, it automatically supplies power directly to your home’s electrical circuit breaker box. After
utility power returns, the generator shuts itself off and waits for the next outage. It operates on natural gas or liquid
propane gas and sits outside just like a central air conditioning unit. See our "How It Works" video for more
Who is Generac?
Since 1959, Generac has been designing and manufacturing backup power generators for residential, commercial
and industrial applications. We have grown to be the world’s largest provider of residential backup generators,
selling five times as many generators as all of our competitors combined. Generac’s broad product line is available
through the industry’s largest network of independent generator dealers, retailers and wholesalers. To learn more,
What is the difference between an automatic air-cooled generator and an automatic liquid-cooled generator?
The engines! Air-cooled generators come with engines that use fans to force air across the engine for cooling, while
liquid-cooled generators use enclosed radiator systems for cooling, similar to an automobile. Generally, liquid-
cooled engines are used on larger kW generators due to the larger engines required for the higher power output.
How does the Generac OHVI® engine compare to air cooled engines used in other brands of backup generators?
Unlike other engines, used in backup power generation, Generac OHVI engines are made specifically for generators.
They are engineered to run for the long periods of time required during a severe power outage or on a job site,
utilizing the same type of pressurized oil lubrication used to give automobile engines long and trouble-free lives.
What’s the advantage of an aluminum enclosure?
In addition to its sturdy galvanneal steel enclosure, Generac is one of the few companies to offer premium
aluminum enclosures for its residential backup generators. Aluminum enclosures are naturally rust and corrosion
resistant. For salt air or high humidity conditions, aluminum is highly recommended to ensure decades of worry free