Overview#
The Cummins RS17A is a 17 kW air-cooled residential standby generator from the QuietConnect RS Series. It shares the same QSJ999G V-twin platform as the RS13A but delivers 17 kW of standby power -- enough for whole-house backup on most mid-size homes including central air conditioning up to 4 tons.
The RS17A runs on natural gas or propane vapor (field selectable) at 3,600 rpm and produces 65 dB(A) at 23 feet. The aluminum enclosure with galvanized steel interior is wind-rated to 180 mph per ASCE 7-10 and meets NFPA 37 for 18-inch setback from structures. Cold weather operation is rated to 0 F (-18 C) out of the box.
At 531 lbs the RS17A is slightly heavier than the RS13A but uses the same compact footprint (34.1 x 36.0 x 27.3 inches), making it a drop-in upgrade for homeowners who need more starting capacity. The 5-year / 2,000-hour warranty provides strong coverage for a residential air-cooled unit.
Technical Specifications#
| Parameter | Value |
|---|---|
| Standby Rating | 17 kW |
| Voltage | 120/240V single phase |
| Frequency | 60 Hz |
| Rated Amps (NG/LP) | 70.8 / 70.8 |
| Engine Model | QSJ999G |
| Displacement | 999 cc (60.96 in³) |
| Configuration | Naturally aspirated, V-twin |
| Cooling | Air-cooled |
| Bore x Stroke | 3.54 in x 3.09 in |
| Rated Speed | 3,600 rpm |
| Motor Starting (30% dip) | 34 kVA |
| Voltage Regulation | ±1.25% |
| THD | < 5% |
| Sound Level | 65 dB(A) at 23 ft (7 m) |
| Dimensions (L x W x H) | 34.1 x 36.0 x 27.3 in |
| Weight | 531 lbs |
| Wind Rating | 180 mph (ASCE 7-10) |
| Cold Weather | 0 F (-18 C) standard |
Our Service Experience#
The RS17A is mechanically identical to the RS13A and RS20A in terms of maintenance requirements. The V-twin engine has two spark plugs, a single air filter, and a direct-drive blower cooling system. No coolant, radiator, or water pump to maintain. Annual service takes under an hour for an experienced technician.
Battery health is the single most important factor in reliable automatic starting. We recommend weekly exercise of at least 12 minutes and annual battery load testing. A failed battery is the most common reason for a no-start event on any air-cooled residential standby generator.
The RS17A is a popular choice for Northern California homes in the 1,500-2,500 square foot range. It provides enough power for essential circuits plus central A/C in most installations. For homes with large A/C systems (5 tons or more) or multiple high-draw appliances, the RS20A provides additional headroom.
Frequently Asked Questions#
What is the standby rating of the RS17A? 17 kW at 120/240V, 60 Hz, single phase. The rating is the same on natural gas and propane vapor.
How does the RS17A compare to the RS13A? Both use the same QSJ999G engine and share identical dimensions and sound levels. The RS17A delivers 17 kW vs 13 kW and has higher motor starting capacity (34 kVA vs 26 kVA), making it better suited for homes with central air conditioning.
What is the warranty on the RS17A? 5-year / 2,000-hour limited warranty from Cummins. Extended options available up to 10 years.
