How Much Power Will 600W Xtreme Heater For RV Basements Draw During Winter?
Published 09/30/2025 >
Question:
How much power will the 600W XH77FR actually draw if it’s cycling on and off all winter?
asked by: Jason
Expert Reply:
Jason, the # XH77FR 600w heater doesn’t run constantly. It only kicks on when temps dip below 40°F and shuts off at 55°F. So in practice, it cycles. At normal output, it draws about 5.2 amps running on 115V. The actual runtime depends on how sealed your compartment is and how cold your climate gets. Covering vents and insulating makes a big difference in reducing cycle time.
Do you keep your rig in a barn or out in the open? That’ll affect runtime too.

Product Page this Question was Asked From
Xtreme Heaters RV Basement and Boat Bilge Heater with Quick-Release Bracket - Medium - 600 Watts
- RV Heaters
- Electric Heater
- 110 Volts
- Winterization
- 5th Wheel
- Motorhome
- Travel Trailer
- Xtreme Heaters
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