Kohler Generators

Kohler has 3 units on Outage Geek, priced from $5,449 to $7,099. The least expensive Kohler model here is the Kohler 14kW RCA at $5,449, and the lineup below runs cheapest first.

~$5,449

Home Standby Generator · NG/LP · 67 dB

Kohler 14kW RCA

Kohler's answer to the Guardian 14kW, and the one owners pick for its engine. The commercial-grade CH740 V-twin uses hydraulic valve lifters — no break-in, no valve adjustments — and the corrosion-proof aluminum enclosure holds up in coastal salt air where painted steel rusts. It punches above its class on motor starting with 33kVA of surge capacity via PowerBoost, so a 4-ton AC is realistic. Owners rate the hardware a grade above Generac, but the dealer network is thinner, and with no built-in Wi-Fi the OnCue Plus monitoring app needs an ethernet run or a wireless bridge. Note the honest ratings: 14kW on propane but 12kW on natural gas, and 67 dB at full speed is still loud beside a patio or bedroom window.

14,000 W · up to well pump or a small central AC

running: 14,000 W
Transfer switch: transfer-switch ready

Best for Buyers who prioritize engine build quality and coastal durability over app polish and dealer density.

Full spec sheet Check price on Amazon

~$5,699

Home Standby Generator · NG/LP · 69 dB

Kohler 20kW RCA

The 20RCA is Kohler's volume whole-house unit and the direct rival to Generac's 22/24kW, built around the bigger CH1000 V-twin. Its party trick is 41kVA of motor-starting capacity — enough on paper to start a 5-ton AC without dropping the rest of the house, which smaller-surge competitors need load-shedding modules to manage. Owners mostly report boring, dependable service, the best compliment a standby can get. Trade-offs are the familiar Kohler ones: 18kW on natural gas, 69 dB at full-speed operation is on the loud side, OnCue Plus monitoring trails Generac's app, and you may wait longer for both the unit and a certified installer depending on your region.

20,000 W · up to whole home with central air

running: 20,000 W
Transfer switch: transfer-switch ready

Best for Whole-house buyers with big AC loads who want maximum motor-starting muscle and proven long-term reliability.

Full spec sheet

~$7,099

Home Standby Generator · NG/LP · 67 dB

Kohler 26kW RCA

Kohler's air-cooled flagship goes head-to-head with Generac's 26kW and quietly wins the spec that matters for most buyers: 24kW on natural gas versus Generac's 22.5kW. Built on the CH1006 V-twin with PowerBoost starting, it carries large homes — dual AC compressors, well pumps, the works. The critical silencer and sound enclosure keep the tone lower and less mechanical than the raw 67 dB figure suggests, though it's still not quiet. Ownership realities: it's a 625-lb unit that needs a serious pad, Kohler/Rehlko dealer coverage is uneven so line up your servicer before you buy, and lead times can stretch after major storm seasons. The 26RCAL variant bundles a 200A transfer switch if you want one quote for everything.

26,000 W · up to whole home with central air

running: 26,000 W
Transfer switch: transfer-switch ready

Best for Large homes on natural gas that want the smallest NG derate and top-tier build in an air-cooled unit.

Full spec sheet Check price on Amazon