Free shipping* available to mainland U.S. states in Pacific, Mountain and Central time zones, and to many states in the Eastern time zone. Plus almost free freight to East Coast states!
*Freight deals are for shipment to a commercial address with forklift or dock high loading, or when picked up at a freight terminal. For deliveries considered residential by the freight carrier you will be charged only the additional fees for residential and/or lift gate service.
What Size of Generator Do I Need?
Kohler 15RESA Automatic Backup Generators
This Kohler 15kW residential generator is powered by a liquid-cooled automotive engine to provide heavy duty power for your home or small business need. It has an Advanced Digital Control (ADC) that protects all of your valuable appliances and sophisticated electronics by supplying the clean, pure sine wave power they require. Kohlers exclusive PowerBoost technology provides greater motor starting capability for large loads such as central air conditioners while still running other home appliances and electronics.
Quick connections make installation easy and an integral mounting pad eliminates the need to pour a concrete slab. The quietest operating residential generator in its class, it is also one of the best-looking, with a smaller, attractive enclosure.
- Safer Power for Sensitive Electronics
- Quiet Operation (Enclosure with Sound Kit)
- Faster Response – Restores power in as little as 10 seconds
- Superior limited warranty – 5 year standard in standby (grid-tie) applications. Please note – Kohler does not currently cover this model of generator when used in non-standby (off-grid) applications..
- Designed for Easy Installation
- Available for use with LP vapor or natural gas
Built on Kohler’s long history and vast experience producing emergency generators and backup power devices for homes and businesses, RES generators give you clean, quiet emergency power whenever and wherever you need it.
What Size of Generator Do I Need?
Before purchasing a residential backup generator it is important to evaluate your emergency power needs. Kohler’s easy home generator sizing calculator will assist you in determining your standby power requirements, and help you understand what to expect from a home generator.
Kohler Generator Sizing Calculator
Why Choose Kohler?
Dependable Utility and Solar Grid-Tie Back-up Power
When utility power goes out it is not just inconvenient, it can also impact your comfort and security, and may even cost you money. With a Kohler backup generator you can have dependable protection to keep your home or small business running smoothly during unexpected power outages, for days or even weeks.
- An industry-leading 5-year / 2000 hour warranty for grid-tie (standby) applications.
Reliable Backup Power for Solar Off-Grid and Remote Locations
At Fire Mountain Solar we rely on standby generators – to keep our office running smoothly when there’s not enough solar or wind power to do so – and to provide many of our off-grid customers with the power they need. This type of service puts a generator to the test, because it can require frequent and extended run times. Reliability, dependability and ease of operation are critical in these situations, particularly when the system is in a remote location.
That’s why Kohler is the only brand of backup generator that we sell. Personally and professionally we have come to trust and depend on Kohler, because Kohler generators have proven themselves tough enough to last even under the most demanding conditions. And in those rare instances where we have needed to have a generator serviced, Kohler, and the wonderful folks at our local master distributor – Pacific Power Generation – have proven themselves again. We have complete and total confidence when we recommend Kohler generators.
- Please note – Kohler does not currently cover this model of generator when used in non-standby (off-grid) applications.
Features
All of our Kohler RES, RESL and RESA gas generator come are UL-220 listed, 120/240 volt, 60 hertz, Single Phase, and come with:
- Mounted Line Circuit Breaker
- Digital Controller
- Battery Charger
- Engine Starting Battery
| Kohler 15RESA Home Gas Generators | ||
|---|---|---|
| Item | Description | Price* |
| 15RESA Residential Generator | 15.0.13.0 kW, 63/54 amps, 65 dB(A) | $8,900.00 |
*Important for price comparisons – Our prices include the engine starting battery!
Special contractor pricing available to installers. We give discounts for paying by check or wire transfer. Call us to find out more.

















