DuroMax 28,000 Watt Dual Fuel Portable Inverter Generator w/ CO Alert
Whole-Home Backup Power Without Giving Up Fuel Flexibility
When a long outage hits, a small portable generator can force you to choose which essentials stay on. The DuroMax XP28000iH is built for a different problem: keeping a large portion of the home powered while still giving you the flexibility to use either gasoline or propane. With up to 28,000 peak watts, inverter-based low-THD output, two 50-amp outlets, remote start, and 2-wire start capability, it can serve as the center of a serious home-backup system without requiring a permanently installed standby generator.
Gasoline provides the highest output at 28,000 peak / 22,000 running watts. Propane provides 25,000 peak / 20,000 running watts and gives you a fuel that stores well for emergency use. That combination makes the XP28000iH especially useful for homeowners who need enough capacity for demanding loads such as central air conditioning, refrigeration, pumps, lighting, electronics, and other household circuits when connected through a properly sized transfer switch or interlock.
Why the XP28000iH Works for Large Backup Loads
- 28,000 peak / 22,000 running watts on gasoline
- 25,000 peak / 20,000 running watts on propane
- Dual fuel operation lets you choose gasoline or propane as availability changes
- <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 at 25% | Runtime at 50% |
|---|---|---|---|---|
| Gasoline | 28,000 | 22,000 | 16 hours | 9 hours |
| Propane | 25,000 | 20,000 | 12 / 18 / 30 hours on 40 / 60 / 100 lb tanks | 6.67 / 10 / 16.66 hours on 40 / 60 / 100 lb tanks |
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
- XP28000iH generator
- Propane hose and regulator
- Oil funnel
- Spark plug wrench
- Remote control
- Battery tender
- DC cables
- 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 verify the loads you intend to run and install the appropriate transfer switch, inlet, or interlock. The XP28000iH 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: homes with large electrical loads, rural properties, extended-outage preparedness, workshops, and hybrid solar/battery systems that need a high-output generator capable of automatic 2-wire starting.