DuroMax 28,000 Watt Tri Fuel Portable Inverter Generator with CO Alert
Whole-Home Backup Power When You Cannot Depend on a Single Fuel
Extended outages create two problems at once: you need enough power for major household loads, and you need a fuel supply that will still be available days into the outage. The DuroMax XP28000iHT addresses both. It produces up to 28,000 peak watts and can run on gasoline, propane, or natural gas, giving you three ways to keep the home powered as conditions change.
Gasoline gives you the highest output at 28,000 peak / 22,000 running watts. Propane provides 25,000 peak / 20,000 running watts and is practical for long-term fuel storage. Natural gas provides 20,000 peak / 16,000 running watts and, where a properly sized utility supply remains available, can eliminate repeated refueling altogether. Combined with low-THD inverter output, two 50-amp outlets, remote start, and 2-wire start capability, the XP28000iHT is designed for serious whole-home and hybrid-energy backup systems.
Why the XP28000iHT Stands Out
- 28,000 peak / 22,000 running watts on gasoline
- 25,000 peak / 20,000 running watts on propane
- 20,000 peak / 16,000 running watts on natural gas
- Tri Fuel operation reduces dependence on any one emergency fuel source
- <3% total harmonic distortion for clean sine-wave power suitable for modern electronics
- Two 14-50R 50A outlets for high-capacity home-backup connections
- Remote and push-button electric start
- 2-wire start for compatible solar inverter and battery-bank automation
- 48V/52V DC output for charging compatible battery banks
- CO Alert shutdown, GFCI outlets, and automatic low-oil shutdown
- 100% copper windings and AGM starting-battery technology
Power Output and Runtime
| Fuel | Peak Watts | Running Watts | Runtime |
|---|---|---|---|
| Gasoline | 28,000 | 22,000 | 16 hr at 25% / 9 hr at 50% |
| Propane | 25,000 | 20,000 | 12 / 18 / 30 hr at 25% on 40 / 60 / 100 lb tanks; 6.67 / 10 / 16.66 hr at 50% |
| Natural Gas | 20,000 | 16,000 | Dependent on continuous gas supply |
Natural-gas requirements: 6.0–9.0 inches of water column fuel pressure and approximately 327,000 BTU/hr at full load. Have a qualified gas professional verify that your meter, regulator, piping, and service can provide the required flow before relying on natural gas at full output.
Engine and Electrical Specifications
- Engine: DuroMax 999cc, 4-stroke OHV
- Cooling: forced air
- Engine speed: variable, dependent on load
- Fuel delivery: carburetor
- Starting: push-button electric start and remote start; no recoil start
- Voltage: 120/240V AC
- Frequency: 60 Hz
- Phase: single phase
- Total harmonic distortion: <3%
- Neutral system: bonded
- Gasoline tank: 12.7 gallons
- Recommended oil: 10W-30
- Oil capacity: 84.5 fl oz / 2.5 L
- Suggested propane tank: 100 lb minimum
- Noise level: approximately 70 dB at 25% load
Power Panel
- 4 × 5-20R household receptacles
- 1 × L14-30R locking receptacle
- 2 × 14-50R 50A receptacles
- GFCI protection
- Digital volt meter
- Hour meter
- Battery switch and battery-tender port
Size, Emissions, and Construction
- Dimensions: 39.25 in L × 31 in W × 34.5 in H
- Weight: 466 lb
- Winding material: 100% copper
- Cast-iron cylinder sleeve
- EPA certified
- Not CARB certified and not 50-state compliant
What's Included
- XP28000iHT generator
- Propane hose and regulator
- 15-foot × 3/4-inch natural-gas hose with quick-connect fittings
- Oil funnel
- Spark plug wrench
- Remote control
- Battery tender
- DC output wires
- Tool set
- Owner's manual
Before You Buy
This generator is intended for outdoor use only. Never operate a portable generator inside a home, garage, basement, enclosed porch, or other enclosed or partially enclosed area. For whole-home backup, have a qualified electrician size and install the appropriate transfer switch, inlet, or interlock. Natural-gas operation should also be reviewed by a qualified gas professional to confirm adequate pressure and BTU capacity. The XP28000iHT is EPA certified but is not CARB certified, so confirm that it can legally be sold and operated in your state before purchasing.
Best fit: whole-home emergency backup, long-duration outages, rural properties, high-load workshops, and hybrid solar/battery systems where the ability to switch among gasoline, propane, and natural gas provides valuable redundancy.