Model XP28000iHTThe DuroMax XP28000iHT is a tri-fuel generator that delivers 22,000 running watts and can surge up to 28,000 starting watts. That level of continuous output puts it firmly in whole-house backup territory, capable of running central air conditioning, well pumps, electric ranges, and multiple high-draw appliances simultaneously without breaking a sweat. Because it accepts gasoline, propane, and natural gas, owners gain real flexibility in how they source fuel during extended outages or planned use on a job site. This is not a weekend camping unit. It is a stationary powerhouse built for serious electrical demand.
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Here's the quick tradeoff view — what this model does well, and where it may not fit.
The DuroMax XP28000iHT is a powerhouse tri-fuel generator delivering 22,000 running watts and 28,000 starting watts on gasoline, placing it firmly in the territory of whole-house backup and heavy commercial applications. At this wattage level, this unit can comfortably power multiple large appliances simultaneously, including central air conditioning systems, well pumps, electric ranges, and full lighting circuits. It is designed for scenarios where partial power is not an option and users need to keep an entire household or a demanding job site fully operational during extended outages.
Built by DuroMax, a manufacturer known for its diverse lineup of dual-fuel and gasoline-powered generators prized for reliability and value, the XP28000iHT represents the upper end of portable power generation. Its tri-fuel capability means owners are not locked into a single fuel source, adding a critical layer of flexibility during emergencies when one type of fuel may be scarce. With 120/240V AC output and a bonded neutral configuration, this generator is ready for direct integration into home electrical panels via a transfer switch, making it a serious contender for permanent backup duty.
On gasoline, the XP28000iHT produces its peak output of 22,000 running watts and 28,000 starting watts, drawing from a 12.7-gallon fuel tank. At 50% load, the unit runs for about 9 hours on gasoline before requiring a refill, which means that under moderate demand you can expect a full overnight cycle of power without interruption. Switching to propane, the running watts drop to 20,000 with 25,000 starting watts, but runtime actually improves to 10 hours at 50% load and extends to 12 hours at 25% load. This trade-off between slightly reduced power and longer run time on propane gives owners a meaningful choice depending on their load requirements and fuel availability.
The 4-stroke engine produces a noise level of 70 dBA, which is comparable to normal conversation at close range or the sound of a running vacuum cleaner. At this noise level, placement matters. Positioning the generator further from living spaces or work areas will help reduce the perceived volume, and keeping it at least 20 to 30 feet away from windows or doors is a practical consideration for comfort during extended operation.
At 466 pounds, the DuroMax XP28000iHT is not a generator you casually load into a truck bed or wheel around a property on a whim. This is a logistically significant piece of equipment that demands careful planning for placement and, once situated, is best treated as semi-stationary. Moving it requires multiple people or mechanical assistance, and any repositioning should be thought through in advance. The physical footprint measures 39.25 inches long by 31 inches wide by 34.5 inches tall, which is a substantial presence in a garage, shed, or outdoor enclosure. Storage planning should account not only for the unit itself but also for adequate ventilation clearance and accessibility for fueling and maintenance. This is the kind of generator you set up once in a dedicated location and leave ready to go.
Starting the XP28000iHT is handled through an electric starting system, which eliminates the physical effort of pull-starting a large engine and significantly reduces the friction of getting power flowing during an emergency. Onboard indicators provide real-time operational feedback, allowing users to monitor the generator's status without guesswork. Safety is reinforced through GFCI-equipped outlets, which protect against ground faults and reduce the risk of electrical shock, a particularly important feature when operating in wet or outdoor conditions. The unit carries EPA certification, confirming that it meets federal emissions standards for environmental compliance. It is worth noting that the warranty is listed at 0 years, which means buyers should verify current warranty terms directly with DuroMax or their authorized dealer to understand exactly what coverage, if any, accompanies their purchase.
Est. running: 1,800W
Peak surge (single motor): 2,000W
Avoid starting multiple motor loads at the same time.
Est. running: 5,000W
Peak surge (single motor): 2,000W
Avoid starting multiple motor loads at the same time.
Est. running: 8,600W
Peak surge (single motor): 8,000W
Avoid starting multiple motor loads at the same time.
These are estimates using typical wattage assumptions. Real appliances vary. Startup surges can be 2–6× the running wattage for motor-driven loads. 240V loads require a 120/240V generator and proper connection. Use a transfer switch or interlock kit; never backfeed a panel.
DuroMax is a renowned manufacturer of portable and standby generators, recognized for its diverse range of dual-fuel and gasoline-powered models known for reliability and value.
| Fuel | Running | Starting | Runtime @50% | Runtime @25% |
|---|---|---|---|---|
| Gasoline | 22000W | 28000W | 9h | Not available |
| Propane | 20000W | 25000W | 10h | 12h |
| Running Watts | 22000 watts |
|---|---|
| Starting Watts | 28000 watts |
| Starting Watts (Gasoline) | 28,000 W |
| Starting Watts (Propane) | 25,000 W |
| Running Watts (Gasoline) | 22,000 W |
| Running Watts (Propane) | 20,000 W |
| Spark Arrestor | No |
|---|---|
| Engine | 4-Stroke |
| Engine Type | 4-Stroke |
| Engine Displacement | 999 cc |
| Engine Oil | 10W-30 |
| Engine Oil Capacity | 2.5 Qt |
| Cylinder Sleeve | Cast iron sleeve |
| Emissions Compliance | EPA Certified |
| Voltage (AC) | 120/240V |
|---|---|
| Phase | Single |
| Running Amps | 183.3 at 120V, 91.67 at 240V A |
| AC Frequency | 60 hz |
| GFCI Outlets | Yes |
| Neutral | Bonded |
| Total Harmonic Distortion (THD) | <3% % |
| Dimensions | 39.25"L x 31"W x 34.5"H inches |
|---|---|
| Weight | 466 lbs |
| generator_type | Generator |
|---|---|
| Inverter | No |
| RV Ready | No |
| Parallel Capable | No |
| Fuel Gauge | No |
| transfer_switch_ready | No |
| Covered Outlets | No |
| feature_flags | |
| use_cases | |
| Automatic Voltage Regulator | No |
| Warranty | 0 years |
| Automatic Low Oil Shutdown | Yes |
| Emissions Compliance | EPA Certified |
| Carbon Monoxide Sensor | Yes |
| Display Type | Digital |
| Documentation | Owner's Manual |
| Electric Start | Yes |
| Fuel Tank Capacity | 12.7 gallons |
| Idle Control System | Demand Based Variable Idle |
| Included Accessories | Propane Hose and Regulator, Natural Gas Hose, Oil Funnel, Spark Plug Wrench, Remote Control, Battery Tender, Tool Set |
| Indicators | Yes |
| Noise Level | 70 dBA |
| Part Number | XP28000iHT |
| Recoil Start | No |
| Remote Start | Yes |
| Starter Type | Electric |
| Starting System | Electric |
| Winding Material | 100% copper windings |
| Fuel Type | Tri-Fuel |
|---|
| Runtime @ 50% | 9 hours |
|---|---|
| Runtime @ 25% Load (Propane) | 12 hours |
| Runtime @ 50% Load (Gasoline) | 9 hours |
| Runtime @ 50% Load (Propane) | 10 hours |
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