The XP12000EH puts out 9,500 W continuously and up to 12,000 W for a few seconds when a motor starts. On propane it's rated at 9,025 W running and 11,400 W starting. It runs up to 8 h on gasoline at 50% load on a full 8.3 gal31 L tank. It weighs 224 lb101.6 kg. Noise is rated at 74 dB (the source doesn't give the distance or load). It takes 40.5 fl oz1.2 L of engine oil, and the source recommends SAE 10W-30. The spark plug is F6RTC type, such as NGK BPR6ES, gap 0.7–0.8 mm (0.028–0.031 in).
Specifications
Units: /| Power | |
|---|---|
| Running output | 9,500 W 1DuroMax calls this rated wattage. |
| Starting output | 12,000 W 1DuroMax calls this surge wattage. |
| Running output on propane | 9,025 W 1 |
| Starting output on propane | 11,400 W 1 |
| Voltage | 120/240 V 1 |
| Engine | |
| Engine | 4-stroke OHV, forced-air cooled 1 |
| Displacement | 457 cc 1 |
| Fuel | Gasoline (87 octane or higher) or propane 1 |
| Starting | Electric and recoil 1 |
| Fuel and run time | |
| Tank | 8.3 gal31 L 1 |
| Run time | 8 h 1on gasoline at 50% loadOn propane: 7 hours at 50% load from a 40 lb tank. |
| Size and noise | |
| Weight | 224 lb101.6 kg 1 |
| Length × width × height | 29 × 30 × 26 in737 × 762 × 660 mm 1 |
| Noise | 74 dB 1distance and load not statedThe manual gives "<74 dB", meaning below 74 dB. |
| Outlets | |
| Outlets | 120 V (NEMA 5-20) 120 V twist-lock (NEMA L5-30) 120/240 V twist-lock (NEMA L14-30) 120/240 V 50 A (NEMA 14-50) 12 V DC charging posts The manual doesn't give the number of each outlet. |
| Other | |
| Emissions certification | EPA/CARB 1 |
| Warranty | 3 years residential, 1 year commercial or heavy use 1 |
Oil, spark plug and service
What to have on the bench before an oil change or tune-up.
| Oil capacity | 40.5 fl oz1.2 L 1 |
| Oil type | SAE 10W-30 1Synthetic oil may be used after the 8-hour break-in; full synthetic 5W-30 helps in cold weather. |
| Spark plug | F6RTC type, such as NGK BPR6ES, gap 0.7–0.8 mm (0.028–0.031 in) 1 |
| Change oil every | After the first month or 8 hours, then every 6 months or 100 hours 1Every 3 months or 50 hours of heavy use. |
Parts
Search links for common parts. Check the part number against the label on your unit before you buy.
| Part | Find it |
|---|---|
| Air filter | Amazon · eBay |
| Spark plug | Amazon · eBay |
| Engine oil | Amazon · eBay |
We may earn a small commission if you buy through these links. It doesn't change what we list. More.
Model numbers
This page covers model number XP12000EH. Brands often sell the same name under several numbers with small differences, so check the label on the frame.
Compare
Often compared: DuroMax XP13000EH, Westinghouse WGen9500DF, Predator 9500 Super Quiet Inverter
Questions people ask
How much oil does the DuroMax XP12000EH take?
40.5 fl oz1.2 L. Oil type: SAE 10W-30. Oil change: After the first month or 8 hours, then every 6 months or 100 hours.
What spark plug does the DuroMax XP12000EH use?
F6RTC type, such as NGK BPR6ES, gap 0.7–0.8 mm (0.028–0.031 in), according to the source. Check the plug in your unit before you buy a replacement.
How long does the DuroMax XP12000EH run on a tank?
8 h. That's on gasoline at 50% load, according to the source. More load means less time.
How much does the DuroMax XP12000EH weigh?
224 lb101.6 kg.
How loud is the DuroMax XP12000EH?
74 dB. The source doesn't say at what distance or load it was measured, so compare it with care.
What's the difference between 9,500 W and 12,000 W?
9,500 W is what it can supply continuously. 12,000 W is a short burst for the moment a motor (a fridge, a pump, an AC unit) starts up.
Sources
- DuroMax XP12000EH owner's manual (rev. 06/27/2022). Owner's manual, accessed November 12, 2026.
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