Kohler Whole House Generator Cost $5,098 to $7,546 MSRP for the RCA Line.
Kohler is one of the few standby makers that prints its own prices: $5,098 for the 14RCA, $6,016 for the 20RCA and $7,546 for the 26RCA, before installation. Kohler's own 200 A transfer switch, the RXT-JFNC-200ASE, lists at $949 at AP Electric, and the installation is quoted per house. At the same retailer, Kohler units listed within a few hundred dollars of the comparable Generac in October 2026.
Kohler RCA and RCL Lineup
| Model | kW | Cooling | Kohler MSRP | dB(A) exercise / normal |
|---|---|---|---|---|
| 14RCA | 14 | Air | $5,098 | 63 / 69 |
| 20RCA | 20 | Air | $6,016 | 66 / 70 |
| 26RCA | 26 | Air | $7,546 | 56 / 67 |
| 24RCLA | 24 | Liquid | $17,900 | - |
| 48RCLC | 48 | Liquid | $25,703 | - |
MSRP as listed on Kohler's home generators page on 8 Oct 2026 and re-read 10 Nov 2026 (starting price, installation not included). Kohler also lists the 10RESV at $3,946, 12RESV at $4,384, 38RCLC at $22,949 and 60RCLB at $28,304. The liquid-cooled units need a different install from the air-cooled RCA line. Sound levels from Kohler spec sheets G4-270, G4-272 and G4-315, at 7 m (23 ft) by Kohler's own method.
What Kohler's Price Buys Over Generac, Checked
Kohler is often described as the premium brand that costs well over Generac. The listed prices do not show a large gap. On 8 October 2026, at the same retailer (AP Electric):
| Size class | Kohler | Generac | Higher listed |
|---|---|---|---|
| 14 kW | 14RCA $4,999 | 7258 $4,799 | Kohler |
| 20 to 22 kW | 20RCA $5,899 (20 kW) | 7260 $6,189 (22 kW) | Generac |
| 26 kW | 26RCA $7,399 | 7327 $7,019 | Kohler |
The trench, gas line, pad, transfer switch wiring and permit are the same job whichever badge is on the unit, so the installed gap is roughly the unit gap. Dealer quotes vary more than that, which is why two or three quotes matter more than the brand.
Noise. Kohler's sheets give the 14RCA 63 dB(A) on weekly exercise and 69 dB(A) in normal operation, the 20RCA 66 and 70, and the 26RCA 56 and 67, all at 7 m by Kohler's own method. Generac's sheets give its 14 kW and 18 kW units 65 dB(A) at normal load and its 22 kW 67 dB(A), measured from the front. Because the two makers measure differently, the published numbers do not show either brand to be the quieter one. If noise near a bedroom or a property line matters, ask the dealer to run an installed unit for you.
Enclosure. Kohler's RCA spec sheets list an aluminium enclosure, and Generac lists its Guardian models as aluminium in a bisque finish, so at these sizes enclosure material is not a reason to pick one brand over the other. Kohler's smaller RES models are listed with steel enclosures.
Warranty. Kohler's standard residential warranty is 5 years or 2,000 hours for standby use, and its spec sheets state it covers parts, labour and travel for the full period. Compare the wording of the Generac or other warranty you are quoted, not only the years.
What the Installed Price Is Made Of
Generator + 200 A switch, listed
$6,667 - $7,355
Cheapest unit at this size with the $919 Generac switch, through the dearest with the $949 Kohler switch. Prices checked 8 Oct 2026. No installation.
Installation
Quoted per house
Gas or propane connection, transfer switch wiring, pad, permit, commissioning. No maker or national body publishes it by size.
Two installed prices are published. Walton EMC, an electric co-op in Georgia, tells members a Generac 22 kW Response Series averages $9,000 to $10,000 locally for unit and installation at existing homes with natural gas service, and $1,000 to $2,000 more where propane has to be installed (archived copy). The Remodeling Cost vs. Value Report 2025 puts its backup generator job at $13,534 nationally ($11,629 to $15,652 across the nine Census divisions), but that job is a 70 A essential-circuits system on existing propane, smaller than a whole-house install, so treat it as a reference point rather than a price for this size.
Your own installed price turns on the gas run length and pipe size, whether the electrical service needs work, the pad and the local permit. Put your quote into the installation quote checker to see how much of it is installation.
Features Kohler Includes
PowerBoost. Kohler's spec sheets say PowerBoost provides excellent starting power, and the 14RCA sheet goes further: it says the 14 kW unit can start and run a 5 ton air conditioner, a load most 14 kW units are not sized for. The 20RCA and 26RCA sheets give no tonnage figure. Have the installer confirm the load calculation for your AC.
OnCue Plus monitoring. The OnCue Plus generator management system is included with the 20RCA, and the controller has an integral Ethernet connector for it. Generac's equivalent is Mobile Link: free over Wi-Fi on Wi-Fi-equipped Guardian models, with a 4G LTE cellular accessory sold separately, while Generac lists its newer 14 kW 7258 with built-in cellular connectivity.
Ten Years of Owning a Kohler 20RCA
Start from the 20RCA's $6,016 MSRP ($5,899 listed at AP Electric), the transfer switch (Kohler's RXT-JFNC-200ASE lists at $949) and your installer's quote for the installation. Then add annual dealer service, fuel and battery replacement. Neither Kohler nor Generac publishes a service-plan price, so ask each installer to quote the annual service visit alongside the install and multiply it by ten. For fuel and service costs that do not depend on the brand, see our maintenance page.
FAQ
How much does a Kohler whole house generator cost installed?v
Kohler lists starting MSRPs of $5,098 for the 14RCA, $6,016 for the 20RCA and $7,546 for the 26RCA (re-read 10 Nov 2026, installation not included); the smaller 10RESV and 12RESV list at $3,946 and $4,384, and the liquid-cooled 48RCLC at $25,703. AP Electric listed the 14RCA at $4,999, the 20RCA at $5,899 and the 26RCA at $7,399. A 200 A service-rated transfer switch lists at $919 to $949 at AP Electric (Kohler's RXT-JFNC-200ASE is the $949 one). Installation is quoted per house and no maker or national body publishes it by size. The nearest published figure is from Walton EMC, a Georgia electric co-op, which tells members a Generac 22 kW averages $9,000 to $10,000 locally for unit and installation at existing homes with natural gas service; the installation work is much the same for a Kohler of that size. Your quote turns on the gas run length and pipe size, any electrical service work, the pad and the local permit.
How much more does Kohler cost than Generac?v
Less than its reputation suggests. At the same retailer (AP Electric, October 2026) the Kohler 14RCA listed at $4,999 against $4,799 for the Generac 7258 14 kW, and the 26RCA at $7,399 against $7,019 for the Generac 7327 26 kW. The 20RCA at $5,899 listed below the Generac 7260 22 kW at $6,189, though it is the smaller unit. Installation work is much the same for either brand, so the installed gap is roughly the unit gap.
What is the difference between Kohler RCA, RCL and RES models?v
Kohler's current home generator listing shows the air-cooled RCA line (14RCA, 20RCA, 26RCA), the liquid-cooled RCL line (24RCLA, 38RCLC, 48RCLC, 60RCLB) and smaller air-cooled RES models (10RESV, 12RESV). Air-cooled units cover most homes; the RCL line is for very large homes, with MSRPs of $17,900 to $28,304 against $5,098 to $7,546 for the RCA line.
How loud is a Kohler generator running?v
Kohler's spec sheets give, at 7 m (23 ft) by Kohler's own method: 14RCA 63 dB(A) during weekly exercise and 69 dB(A) in normal operation; 20RCA 66 and 70 dB(A); 26RCA 56 and 67 dB(A). Generac's sheets give its 14 kW and 18 kW units 65 dB(A) and its 22 kW 67 dB(A) at normal load, measured from the front. The two makers measure differently, so the figures do not support calling either brand quieter.
Does Kohler have the same dealer service as Generac?v
Not necessarily. Generac reported roughly 9,700 residential dealers in its Q2 2026 results, and Kohler does not publish a count. Check how many Kohler dealers serve your zip code, and how quickly they can reach you after a storm, before committing.
Compare with other brands
Generac total cost
Volume leader. Roughly 9,700 residential dealers.
Cummins total cost
Quiet Connect line from 13 to 30 kW.
Briggs & Stratton
PowerProtect line. 7-year warranty.
20 to 22 kW spec
Kohler 20RCA in context of the most popular tier.
14 kW brand prices
14RCA against Generac, Cummins and Briggs.
Maintenance schedule
What annual service involves and what to ask for in a quote.