When the desert nights cool down, a broken RV furnace can turn a cozy getaway into a chilly reminder that “off-grid” doesn’t mean “off-comfort.” Whether you’re camping in Hurricane, posted up in St. George, or crossing into Mesquite, NV, here’s what might be going on when your RV furnace refuses to light—and what you can safely do about it.
1. Check Your Propane Supply
If your stove lights but the furnace doesn’t, your LP system may still have air in the line. Try lighting the stove for 30 seconds to bleed the line, then attempt to start the furnace again.
2. Inspect the Power Source
RV furnaces need both propane and 12-volt power. Low battery voltage (under 12 V) can prevent the blower or ignition board from working. Plug in or start the generator before testing again. 👉 Learn more about electrical issues here →
3. Listen for the Blower
If the blower doesn’t start, the motor or control board could be bad. If it starts but quits before ignition, you may have a faulty sail switch or flame sensor—common in older Suburban and Atwood models.
4. Look for Obstructions and Debris
Insects love the warmth of your exhaust vents. A mud-dauber nest can block airflow and prevent ignition. Use compressed air to clear vents (when the unit’s off, obviously).
5. When to Call a Pro
If you smell gas, hear clicking with no ignition, or your furnace cycles constantly, stop and call an expert. That’s where Expedition Mobile RV Services comes in—we handle full diagnostics and repairs right at your campsite. 👉 Schedule RV Furnace Repair Now →
Final Thought
Don’t tough out a cold night in the desert. Whether you’re wintering in Mesquite or parked near Sand Hollow, our mobile team brings the heat back to your home on wheels—fast.