Backup Generators · Brands

Backup generator brands

For standby generators, the brand matters less than the local dealer who installs and services it. Generac states that 8 in 10 homeowners with backup power have chosen Generac, but market share is not a warranty. Compare on dealer proximity, parts availability, published warranty terms and noise rating for the specific model — not on brand reputation in the abstract.

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A standby generator is a serviced machine, not an appliance. You will interact with the installing dealer far more than with the manufacturer. A mid-tier brand with a responsive local dealer beats a premium brand whose nearest service tech is three hours away and books out four weeks in a storm.

Market share tells you about distribution, not quality. Generac's own site says 8 in 10 homeowners with backup power have chosen Generac. That means parts and dealers are easy to find — a genuine advantage — but it doesn't tell you how a specific model performs.

Compare on things you can verify: the model's published noise rating (typical home generators run 60 to 80 decibels, and Bob Vila cites one 26 kW Kohler model at 56 to 67 dB), the stated engine type and fuel options, and the manufacturer's own written warranty document. Get the warranty PDF for the exact model — do not accept a salesperson's summary of it.

Be skeptical of "best brand" lists generally, including ours. What's best is model-specific and location-specific. Ask each bidder which brands they're authorized to service, and how many of that model they installed in your county last year.

How to choose

Pick the dealer, then the brand: Ask how far away the nearest authorized service tech is and what their storm-season response time looks like.
Read the actual warranty document: Download the manufacturer's warranty PDF for the exact model number. Terms differ by model and by whether it was professionally installed.
Compare noise ratings on the spec sheet: Typical home generators are 60 to 80 decibels. A quieter model can be worth real money if the unit sits near a bedroom or a property line.
Ask about parts lead times: The relevant question isn't reliability in the abstract, it's how long you'd wait for a control board after a storm.
Don't let brand loyalty override sizing: The wrong size in your favorite brand still trips out when the AC starts.

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All backup generators brands

Generac

Kohler

Cummins

Briggs & Stratton

Champion

Honda Generators

FAQ

Backup Generators brands — common questions

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Which generator brand is best?

There isn't a single answer that holds everywhere. For standby units, the strongest predictor of a good outcome is a nearby authorized dealer with fast parts access, not the badge on the enclosure.

Is Generac the most common brand?

Generac states that 8 in 10 homeowners with backup power have chosen Generac. That's the company's own claim about market share, and it mainly tells you dealers and parts are widely available.

How loud are the major brands?

Typical home generators run about 60 to 80 decibels; Bob Vila cites a 26 kW Kohler model rated at 56 to 67 dB. Check the specific model's published rating rather than assuming a brand-wide figure.

Does the brand affect the warranty?

Yes, and so does the model and how it was installed. Ask for the manufacturer's written warranty document for your exact model before you sign — never rely on a verbal summary.

Sources

Where these figures come from

Generac — Home Backup Power · retrieved 2026-07-26
Bob Vila — How to Choose a Generator · retrieved 2026-07-26
Bob Vila — Types of Generators · retrieved 2026-07-26