Generac and Kohler both build air-cooled home standby generators in the sizes most Southern California homes need. Both carry five-year coverage. Both bring your house back up in about ten seconds. The decision comes down to three things: how each warranty is structured, how fast parts and service reach your address, and what you pay at a given kW size.
Generac front-loads labor coverage into years one and two, then narrows to parts. Kohler holds parts, labor and travel level across all five years and sells extensions out to ten. Kohler typically carries a higher equipment price at a comparable size.
Pelican Coast Electric is an authorized Generac dealer and installs Kohler equipment as well. Below, the two brands are compared on fit, warranty, parts availability, service turnaround, and the conditions specific to this region.
Generac vs Kohler at a Glance
- Sizes: Generac’s Guardian line runs 10 to 26 kW air-cooled. Kohler’s RCA line covers a comparable spread.
- Transfer time: both move the house onto generator power in roughly ten seconds through an automatic transfer switch.
- Warranty: five years for both. Generac steps its coverage down by year. Kohler holds coverage level and adds a 2,000-hour limit.
- Extended coverage: Kohler sells parts-only terms at seven and ten years plus a ten-year comprehensive plan.
- Parts network: Generac claims the largest nationwide dealer network. Check both locators against your ZIP code.
- Price: Kohler typically costs more at a comparable kW size.
Neither brand builds a bad home generator. Both require a licensed C-10 contractor and a permitted, inspected installation in California.
Which Generator Fits Your Home
Electrical Load
A load calculation on your panel and the equipment you want running during an outage sets the kW size. A 1,800-square-foot home in Costa Mesa with one HVAC system needs a different unit than a 3,500-square-foot foothill property with two zones and a pool pump. Both brands cover the same practical range, so the number comes first. Our guide on what size whole house generator your Orange County home needs walks through the math.
Lot Size and Noise
Generac’s Guardian series brochure lists 55 to 57 dB(A) in Quiet-Test exercise mode and 61 to 67 dB(A) under normal load. Kohler’s 14RCA product page lists 63 dB(A) during the exercise cycle and 67 dB(A) at full speed. On a tight lot the exercise number matters more, because your unit exercises weekly for years and runs at full load only during outages.
Fuel, Placement and Budget
Both brands run on natural gas or propane, and most homes here use the gas line already at the property. Pad location depends on the distance from your gas meter, local setbacks, and your city’s noise ordinance. On price, Kohler typically costs more at a comparable size. Weigh the difference against parts lead time rather than against the sticker alone.
Warranty Coverage Compared
Generac
Per Generac’s 5-year limited warranty for air-cooled standby generators, coverage narrows as the term runs:
- Years 1 and 2: parts, labor and mileage
- Year 3: parts only
- Years 4 and 5: engine short block and alternator rotor and stator parts only
The same document requires unit registration, proof of purchase and maintenance records, restricts warranty repairs to an authorized Generac service dealer, and caps travel at 100 miles and three hours round trip per occurrence.
Kohler
Kohler’s residential warranty states that parts, labor and travel are covered for five years from the registered startup date or 2,000 hours, whichever comes first. A Kohler distributor, dealer or authorized service representative has to perform and register the startup for that date to apply.
Kohler also sells extended coverage through certified dealers during the original five-year window: parts-only terms at seven and ten years, plus a ten-year comprehensive plan covering the generator and the automatic transfer switch.
What the Difference Means for You
Generac gives you the strongest coverage early, when a manufacturing defect is most likely to surface. Kohler holds a flatter line and sells a longer runway. Both warranties depend on paperwork. Generac wants registration and maintenance records. Kohler wants a dealer-registered startup.
Parts Availability in Southern California
Generac’s brochure claims the largest nationwide dealer network with factory-trained technicians and parts inventories. Kohler works through its own certified dealer and distributor network. Neither company publishes stocking levels by county, so check both locators against your address before you decide:
Count the certified dealers within a reasonable drive of your home. A short list for one brand means a longer wait when a part is needed. This is distribution, not a knock on the equipment, and it changes your downtime.
Kohler Home Generators Now Come From Rehlko
Kohler’s energy business now operates as Rehlko, and the home generator product site lives at kohlerhomeenergy.rehlko.com. The generators still carry the KOHLER name and the engines are still Kohler-built, like the CH740 in the 14RCA. For a homeowner, paperwork and search results now appear under both names.
Service Turnaround When Something Needs Attention
Downtime has two components: how long a technician takes to reach you, and how long the part takes to arrive. Both manufacturers restrict warranty repairs to a certified service dealer, and Generac’s warranty caps travel at 100 miles and three hours round trip per occurrence. If the nearest certified dealer for your brand sits two counties away, the distance shows up in your wait.
Ask any installer two questions before you sign:
- Who performs warranty service on this unit, and where are they based?
- What is your typical parts turnaround for this brand?
Our backup generator installation and service work stays with our own technicians rather than moving to a third party after the install.
Southern California Considerations
- Planned shutoffs. SCE de-energizes circuits in high fire-threat areas during wind events. Inland foothill addresses see these more often than coastal ones. Read what an SCE public safety power shutoff means for your home.
- Summer heat inland. Homes in Upland, Rancho Cucamonga and Ontario size for air conditioning through a long outage. Coastal homes more often size for essentials plus an EV charger.
- Permits. A standby generator ties into permanent wiring and a fuel line, so your city building department sets the permit and inspection requirements. Newport Beach runs plan check and permits through its Building Division. Requirements differ by jurisdiction, so confirm yours before the pad location is final.
- Setbacks and noise ordinances. Rules differ by city, and the pad has to satisfy the one you live under.
What Pelican Coast Electric Installs and Why
Pelican Coast Electric is an authorized Generac dealer. We install Generac home generators across Orange County and the Inland Empire, and Generac is our default recommendation for most homes in this service area.
The reasoning is service, not preference. Warranty work stays with our own technicians instead of routing through a service dealer two counties away.
We install Kohler equipment as well, when a homeowner prefers it or a builder specifies it. Both brands get the same install standard. Our own electricians handle the work start to finish. No subcontractors. California contractor license #1133193, C-10, with more than 50 Google reviews at a 5.0 average.
What a Generator Installation Involves
The sequence is the same for either brand:
- Load calculation on your home and panel
- Size and order the unit
- Pull the permit with your city building department
- Coordinate with the utility
- Set the concrete pad and run the gas line
- Wire the automatic transfer switch
- Startup test and homeowner walkthrough
Plan for weeks, not days. Permit review and equipment lead time drive the schedule more than the physical labor does. Both warranties exclude damage caused by improper installation, and Generac’s also excludes the cost of correcting the installation, so install quality carries well past the first day. Our generator installation service covers the full sequence.
How to Choose Between Generac and Kohler
Lean Generac if:
- Local certified dealers and parts sit close to your address
- You want strong value at a given kW size
- Quiet-Test exercise noise matters on a tight lot
Lean Kohler if:
- You want parts, labor and travel held level across the full five years
- You want the option of a ten-year comprehensive extension
- Equipment price is a smaller factor than warranty structure
For most homes here, the install and the service relationship shape your experience more than the badge does. Pick the installer first. Pick the brand second.
Where We Install Home Generators
Pelican Coast Electric installs standby generators across coastal Orange County and the Inland Empire, including Newport Beach, Laguna Beach, Costa Mesa, Corona del Mar, Dana Point, Upland, Rancho Cucamonga, Ontario, Claremont, Montclair, Pomona and Chino Hills.
Frequently Asked Questions About Generac and Kohler Home Generators
Is Generac or Kohler better for a home standby generator?
Neither brand wins outright. Generac suits homeowners with certified dealers and parts close by. Kohler suits homeowners who want parts, labor and travel held level across the full five-year term. The load calculation, the install and the maintenance schedule shape field performance more than the brand does.
What is the difference between the Generac and Kohler warranty?
Both run five years. Generac covers parts, labor and mileage in years one and two, parts only in year three, and engine short block plus alternator parts in years four and five. Kohler covers parts, labor and travel for five years from the registered startup date or 2,000 hours, whichever comes first.
Does Kohler cost more than Generac?
At comparable kW sizes, Kohler units typically carry a higher equipment price in this market. Weigh parts lead time alongside the sticker price when you compare quotes.
Do I need a permit to install a home generator in California?
Requirements are set by your local building department. A standby generator involves permanent electrical connections and a fuel line, which are permitted trades in California. Ask your installer to confirm the requirements for your address and to pull the permit.
How loud is a Generac compared to a Kohler?
Generac’s brochure lists 55 to 57 dB(A) in Quiet-Test exercise mode and 61 to 67 dB(A) under load for Guardian air-cooled units. Kohler lists 63 dB(A) during the exercise cycle and 67 dB(A) at full speed for the 14RCA.
Who handles warranty service after the install?
Both manufacturers restrict warranty repairs to a certified service dealer. Ask your installer whether they perform the work themselves or hand it off before you sign.
Talk to a Local Installer About Your Generator
Whichever brand you lean toward, the install decides how well it serves you. Pelican Coast Electric runs the load calculation, pulls the permit, sets the pad and gas line, wires the transfer switch, and runs the startup test with our own electricians. Call (949) 989-4404 for a free estimate on either brand.