CUMMINS VS KOHLER
We're factory-authorized for both Cummins and Kohler — two of the most respected names in engines and power. Here's an honest, dealer-side comparison.
At a glance
| Feature | Cummins | Kohler |
|---|---|---|
| Air-cooled range | QuietConnect 13–20 kW | RCA 10–26 kW |
| Liquid-cooled range | RS/RA 25 kW+ | RCL 24–60 kW (+ commercial to 150 kW) |
| Engine | Cummins | KOHLER Command PRO / 2.2L liquid |
| Monitoring | Cummins remote / Wi-Fi | OnCue Plus Wi-Fi/cellular |
| Enclosure | Steel/aluminum (model-dependent) | All-aluminum, corrosion-proof |
| Color options | Standard only | 11 designer colors + Mossy Oak camo |
| Warranty | 5-year limited | 5-year limited |
| Standout | QuietConnect low-noise + commercial pedigree | Designer colors + all-aluminum build |
The short version
Both are century-old engine makers with strong reputations. Cummins brings engine and diesel heritage, the notably quiet QuietConnect residential line, and a deep commercial pedigree. Kohler brings its own power heritage, an all-aluminum corrosion-proof enclosure, and the exclusive option of designer colors and Mossy Oak camo on the 14/20/26 kW RCA.
Lineup
Cummins
QuietConnect air-cooled (13–20 kW), RS and RA liquid-cooled (25 kW and up), plus Onan portables and RV gensets. See our Cummins lineup.
Kohler
RCA air-cooled (10–26 kW), RCL liquid-cooled (24–60 kW) plus commercial to 150 kW, with RDC2 controller and OnCue Plus monitoring. See our Kohler lineup.
Engines
Both brands offer proven air-cooled and liquid-cooled platforms. Cummins air-cooled units run Cummins-built engines; Kohler uses Command PRO air-cooled and a 2.2L+ liquid-cooled in the RCL series.
The color & camo difference
This is Kohler's exclusive: the 14, 20, and 26 kW RCA ship in 11 designer colors and Mossy Oak Shadow Grass or Break-Up Country camo. Cummins ships in standard finishes. If curb appeal or blending into a wooded yard matters, Kohler is the only option.
Sound
Cummins markets QuietConnect specifically for low noise, and it earns that name. Kohler's air-cooled units are also competitively quiet. The real-world gap is small — compare the published dB(A) on the specific models you're weighing, and we'll pull the numbers for you.
Monitoring
Both offer Wi-Fi/remote monitoring with status, run history, and alerts. Functionally similar.
Warranty
Both publish a 5-year limited warranty on home standby units. Coverage varies by model — check the current warranty card for the exact unit.
Service & parts
Both have nationwide authorized service networks. We service both directly in NC and SC.
How to choose
- Go Cummins if you value engine heritage, the QuietConnect noise profile, or pairing with commercial Cummins gear.
- Go Kohler if you want the all-aluminum enclosure or the exclusive color/camo option.
- Talk to us if you want both quoted side by side.
Bottom line
You can't go wrong with either. Right-size the unit, install it right, and stay on a maintenance plan. Request a free quote and we'll spec both options.
FAQ
- Is Cummins or Kohler quieter?
- Both build quiet air-cooled units; Cummins markets its QuietConnect line specifically for low noise, but the gap is small — compare the published dB(A) on the exact models you're considering and we'll help.
- Do you carry both?
- Yes — factory-authorized for both Cummins and Kohler.
- Can I get a Kohler in camo?
- Yes — 11 colors plus Mossy Oak camo on the 14/20/26 RCA. Cummins offers standard finishes only.
Not sure where to start?
Run our free 60-second sizing calculator or talk to a generator pro for a no-pressure quote.