Single-phase 120/240V is the standard for residential and small light-commercial standby power. Air-cooled units typically run 8-26 kW; liquid-cooled residential units extend up to ~60 kW. Sizing is driven by the largest motor start (compressor, pump) plus continuous load.
16 models in this category.
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25 kW residential/light commercial standby on NG or propane. Sized for whole-house backup and small retail with motor-starting loads.
25 kW gaseous-fueled standby generator with Brushless Wound-Field alternator and PowerBoost excitation. Sized for residential and light commercial backup on natural gas or propane.
Single-phaseresidentialcommercial-small
Kohler
Kohler 26RCA
Top-of-line air-cooled at 26 kW -- Kohler CH1006 V-twin. Largest capacity before stepping up to liquid-cooled RCL series.
26 kW standby · Natural Gas / LPG · Air-cooled
26 kW residential standby for larger homes on NG/LP where liquid-cooled cost is not justified but full-house coverage is required.
26 kW residential air-cooled standby generator. The largest air-cooled unit in Kohler's residential lineup for larger homes on a budget.
Single-phaseresidential-largewhole-house
Kohler
Kohler 30CCL
30 kW gaseous standby with PowerBoost -- 300% short-circuit for 10 sec. Kohler KG2204T turbo, no fuel storage required.
30 kW residential/light commercial standby on NG or propane. Sized for whole-house backup and small retail with motor-starting loads.
30 kW gaseous-fueled standby generator with Brushless Wound-Field alternator and PowerBoost excitation. Mid-range CCL series unit for residential and light commercial backup.
Single-phaseresidentialcommercial-small
Kohler
Kohler 30RCL
30 kW liquid-cooled residential -- Kohler KG2204T turbo at 1800 RPM. Quieter than 3600 RPM air-cooled with longer service life.
30 kW standby · Natural Gas / LPG · Liquid-cooled
30 kW whole-house standby for large homes and estates with dual-zone HVAC, pool equipment, or EV charging on NG/LP.
30 kW residential liquid-cooled standby generator. Premium whole-house backup for larger homes with multiple HVAC zones.
36 kW residential/light commercial standby on NG or propane. Sized for whole-house backup and small retail with motor-starting loads.
30-36 kW gaseous-fueled standby generator with Brushless Wound-Field alternator and PowerBoost excitation. Largest CCL series unit for residential and light commercial backup.
Single-phaseresidentialcommercial-small
Kohler
Kohler 38RCL
38 kW liquid-cooled residential -- Kohler KG2204T turbo at 1800 RPM. Quieter than 3600 RPM air-cooled with longer service life.
38 kW standby · Natural Gas / LPG · Liquid-cooled
38 kW whole-house standby for large homes and estates with dual-zone HVAC, pool equipment, or EV charging on NG/LP.
38 kW residential liquid-cooled standby generator. Premium whole-house backup for large estates and homes with heavy electrical loads.
