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.
26 models in this category.
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13 kW whole-house backup with air-cooled simplicity. 65 dB quiet operation, automatic transfer, and 5-year warranty coverage.
13 kW standby · Natural Gas / LPG · Air-cooled
13 kW residential standby for small to mid-size homes with essential circuit backup on natural gas or propane.
13 kW air-cooled residential standby generator. Natural gas or LP, field selectable. 65 dB(A) at 23 ft, 180 mph wind rated, 5-year / 2,000-hour warranty. Quiet Connect series.
Single-phaseresidential
Cummins
Cummins RS17A
17 kW whole-house backup with air-cooled simplicity. 65 dB quiet operation, 34 kVA motor starting, and 5-year warranty coverage.
17 kW standby · Natural Gas / LPG · Air-cooled
17 kW residential standby for mid-size homes needing whole-house backup including central A/C on natural gas or propane.
17 kW air-cooled residential standby generator. Natural gas or LP, field selectable. 65 dB(A) at 23 ft, 180 mph wind rated, 5-year / 2,000-hour warranty. Quiet Connect series.
Single-phaseresidential
Onan
Cummins RS20
20 kW standby · Natural Gas / LPG · Air-cooled
Cummins RS20: 20 kW residential standby generator running on natural gas or LP. Air-cooled Cummins engine with automatic transfer switch for whole-home backup.
Single-phaseresidential-standby
Cummins
Cummins RS20A
20 kW whole-house backup with air-cooled simplicity. 65 dB quiet operation, starts a 5-ton A/C under full pre-load, 5-year warranty.
20 kW standby · Natural Gas / LPG · Air-cooled
20 kW residential standby for mid to large homes needing whole-house backup including 5-ton central A/C on natural gas or propane.
20 kW air-cooled residential standby generator. Natural gas or LP, field selectable. 65 dB(A) at 23 ft, 180 mph wind rated, 5-year / 2,000-hour warranty. Starts a 5-ton A/C.
Single-phaseresidential
Echo
Echo DGK14F
Patented SimulPhase — simultaneous single and three-phase output from one unit, eliminating step-down transformers on mixed-load sites.
14.7 kW standby · Diesel · Liquid-cooled
Mixed-load construction sites where SimulPhase eliminates transformer cost, and rental fleets discovering Shindaiwa heritage.
14 kVA portable diesel generator with SimulPhase technology. Built in Japan by Shindaiwa/Yamabiko.
Tier 4 FinalSingle-phaseconstructionrental-fleet
Echo
Echo DGK20FS
Patented SimulPhase — simultaneous single and three-phase output from one unit, eliminating step-down transformers on mixed-load sites.
22 kW standby · Diesel · Liquid-cooled
Mixed-load construction sites where SimulPhase eliminates transformer cost, and rental fleets discovering Shindaiwa heritage.
20 kW single-phase portable diesel generator with SimulPhase technology.
Tier 4 FinalSingle-phaseconstructionrental-fleet
Echo
Echo DGK36FS
Patented SimulPhase — simultaneous single and three-phase output from one unit, eliminating step-down transformers on mixed-load sites.
40 kW standby · Diesel · Liquid-cooled
Mixed-load construction sites where SimulPhase eliminates transformer cost, and rental fleets discovering Shindaiwa heritage.
36 kW single-phase portable diesel generator with SimulPhase technology.
Tier 4 FinalSingle-phaseconstructionrental-fleet
Echo
Echo DGK7F
Patented SimulPhase — simultaneous single and three-phase output from one unit, eliminating step-down transformers on mixed-load sites.
7.2 kW standby · Diesel · Liquid-cooled
Mixed-load construction sites where SimulPhase eliminates transformer cost, and rental fleets discovering Shindaiwa heritage.
7 kVA portable diesel generator with SimulPhase technology. Built in Japan by Shindaiwa/Yamabiko.
Tier 4 FinalSingle-phaseconstructionrental-fleet
Hipower Systems
Hipower HYSG-30
Yanmar-powered small commercial standby from a vertically integrated US manufacturer — Big 4 specs at Tier 2 pricing.
30 kW standby · Diesel · Liquid-cooled
Small commercial standby where Yanmar reliability and US manufacturing matter.
30 kW Yanmar diesel standby generator. SafeGuard series for small commercial standby. Single-phase. US manufactured in Olathe, Kansas.
Tier 4 InterimSingle-phasecommercial-standby
Kohler
Kohler 25CCL
25 kW gaseous standby with PowerBoost -- 300% short-circuit for 10 sec. Kohler KG2204T turbo, no fuel storage required.
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 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 36CCL
36 kW gaseous standby with PowerBoost -- 300% short-circuit for 10 sec. Kohler KG2204T turbo, no fuel storage required.
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.
Compact portable at 6 kW prime. Residential backup, small tool power, and light commercial applications where 120/240V flexibility is needed in a small footprint.
7 kW standby (6 kW prime) portable diesel generator. Compact Kubota-powered WhisperWatt with 120/240V output at 65 dBA.
WhisperWatt 20 kW single-phase — Isuzu diesel at 1800 RPM, 65 dBA at 7m, 120/240V output, 41.7-gal tank. Same 20 kW as the DCA-25 but for single-phase-only loads.
22 kW standby · Diesel · Liquid-cooled
Full residential or light commercial at 20 kW prime. For sites that need the power of a DCA-25 but only require single-phase 120/240V output.
20 kW prime (22 kW standby) portable diesel generator. Isuzu-powered WhisperWatt single-phase at 65 dBA — same power as the DCA-25, single-phase only.
The largest single-phase WhisperWatt — 36 kW prime from an Isuzu 4LE2X, 65 dBA at 7m, 120/240V only, 79.2-gal tank. Same engine as the DCA-45 but optimized for single-phase loads.
40 kW standby · Diesel · Liquid-cooled
Large single-phase portable at 36 kW. For commercial and residential sites needing maximum single-phase power: large homes, small buildings, and construction sites with heavy single-phase tool loads.
36 kW prime (40 kW standby) portable diesel generator. The largest single-phase WhisperWatt — Isuzu 4LE2X powered at 65 dBA with 79.2-gal tank.
