The DuroMax XP28000iHT is a portable inverter generator that runs on gasoline, propane or natural gas. Its 999cc engine produces 22,000 running and 28,000 peak watts on gasoline. On propane it produces 20,000 running and 25,000 peak watts, and on natural gas 16,000 running and 20,000 peak watts. Total harmonic distortion stays under 3%.
It has two 14-50R 50A outlets, an L14-30R outlet and four 5-20R GFCI outlets. The 50A outlets can be used with interlocks or transfer switches. DC output charges 48V and 52V battery banks, and 2-wire start lets a compatible solar inverter start and stop the generator automatically through its dry contacts.
You can start it with the included remote or the push button. A built-in sensor shuts the generator down if carbon monoxide builds to unsafe levels. An AGM battery and an included battery tender keep it ready to start. It has a bonded neutral, so check compatibility with your transfer switch with an electrician. A qualified gas professional should confirm that your meter and line can supply the natural gas it needs at full load.
- Gasoline output
- 22,000 running W / 28,000 peak W
- Propane output
- 20,000 running W / 25,000 peak W
- Natural gas output
- 16,000 running W / 20,000 peak W
- Engine
- 999cc DuroMax engine
- Power quality
- Total harmonic distortion under 3%
- Outlets
- 2 x 14-50R (50A), 1 x L14-30R, 4 x 5-20R GFCI
- DC output
- For charging 48V and 52V battery banks; DC output wires included
- Starting
- Remote start, push button, 2-wire start for compatible solar inverters
- Fuel tank
- 12.7 gallons (gasoline)
- Runtime
- About 16 hours at 25% load and 9 hours at 50% load on gasoline; about 10 hours at 50% load on a 60 lb propane tank
- Natural gas supply
- 6.0 to 9.0 inches of water column; up to 327,000 BTU at full load
- Noise level
- 70 dB at 25% load
- Safety
- CO Alert shutdown
- Battery
- AGM battery with included battery tender
- Neutral
- Bonded
- Dimensions
- 39.25 x 31 x 34.5 inches
- Weight
- 466 lbs
- Certification
- EPA certified; not CARB certified, so not available for sale in California
- Warranty
- 5 years
- In the box
- Generator, remote control, battery tender, DC output wires, 15 ft x 3/4 in natural gas hose, 6 ft propane hose and regulator, oil funnel, spark plug wrench, tool set, owner's manual