Each month we break down the most common questions and simple answers to ensure you are enjoying your RV adventures. We are talking about RV winter storage here and all things you need to be thinking about to ensure your RV is ready for the camping season.
Why does my RV furnace keep shutting off?
Most shutdowns are caused by restricted airflow (dirty return, blocked vents), a weak 12V supply, or a dirty sail switch/flame sensor that stops the burner for safety. Start by checking the battery/voltage at the furnace and confirming vents and registers are not obstructed.
How do I troubleshoot RV furnace ignition problems?
First confirm propane supply (tank level, valve open, regulator not iced) and that you have strong 12V power because the blower must reach speed before ignition. Then inspect the igniter electrode and burner area for soot, rust, spider webs, or debris that can prevent a proper spark and flame.
Can propane regulators freeze in cold weather?
Yes—regulators can ice up when moisture is present, especially during high demand when rapid pressure drop cools the regulator body. Icing reduces gas flow and can cause weak flames, furnace lockouts, or appliances that won’t stay lit.
How do I prevent propane line freezing?
Propane itself doesn’t “freeze” in normal RV conditions, but moisture contamination can create ice that restricts flow in the regulator or lines. Keep cylinders upright, use a reputable fill source, ensure the pigtails/regulator are protected from road spray, and consider having a technician check for contamination if icing repeats.
Is it safe to run an RV furnace overnight?
Generally yes if the furnace is properly maintained, exhaust/intake are clear, and CO/smoke/LP detectors are working and in-date. The bigger risk is low battery voltage overnight—so confirm adequate battery capacity and charging strategy before relying on the furnace all night.
Why does my RV propane run out faster in winter?
Cold weather increases heating runtime and reduces appliance efficiency due to higher heat loss through walls, windows, and floors. Propane pressure and vaporization can also drop in very cold conditions, pushing the system to work harder and cycle more frequently.
How do I test my RV carbon monoxide detector?
Use the “Test/Reset” button monthly to confirm the alarm sounder and circuitry operate correctly. Also check the manufacture/replace-by date—many CO alarms must be replaced every 5–7 years even if the test button works.
Should I replace RV smoke detector batteries annually?
Yes—annual replacement is a simple, low-cost habit that prevents nuisance chirps and reduces the chance of a dead detector when you need it most. If you have a sealed 10-year unit, replace the entire alarm at end-of-life per the label date.
Can cold weather damage RV slide seals?
Yes—cold can stiffen rubber, and ice buildup can tear seals when the slide moves. Keeping seals clean and conditioned helps them remain flexible and reduces the risk of cracking or deformation.
How do I lubricate RV slides in winter?
Clean the slide rails and wiper seals first, then apply the manufacturer-recommended lubricant (often a dry lube for rails and a conditioner for seals). Avoid heavy grease on exposed components in winter because it can thicken, attract grit, and increase wear.
What causes RV water lines to freeze?
Freezing occurs when plumbing is exposed to sub-freezing air and lacks insulation, heat, or circulation—especially near exterior walls, under cabinets, and in the underbelly. Wind and drafts under the coach accelerate heat loss and commonly freeze low spots first.
Can I use RV antifreeze in gray and black tanks?
Yes—non-toxic RV/marine antifreeze is commonly used to protect traps, valves, and tank residuals after draining. Never use automotive antifreeze in RV plumbing or tanks because it is toxic and not intended for disposal systems.
How do I protect RV dump valves from freezing?
Keep valves closed and only dump when tanks are at least 2/3 full to reduce slow trickles that freeze in the termination area. Insulate the exposed valve/termination zone and use heat tape only if it’s rated and installed safely for RV use.
Can I camp in my RV during freezing temperatures?
Yes, many RVs can be used in freezing weather with the right preparation: heated/insulated water supply, protected plumbing, adequate propane and battery/shore power. Your success depends on insulation quality, whether the underbelly is enclosed/heated, and how you manage moisture and heat loss.
How do I insulate my RV for winter camping?
Start with the highest heat-loss points: windows (insulating film, thermal curtains), door seals, and the underbelly/skirting to block wind. Add foam board in storage bays where appropriate and ensure heat reaches plumbing areas or reroute airflow safely.
What is the safest way to heat an RV in winter?
A properly operating RV furnace is typically the safest primary heat source because it vents combustion gases outside and is designed for RV use. Supplement with electric space heaters only when on shore power, using a tip-over protected unit and avoiding overloaded circuits or extension cords.
How do I check propane leaks in cold weather?
Use a leak-detection solution (or soapy water) on fittings, regulator connections, and pigtails and look for growing bubbles while the system is pressurized. If you smell propane or suspect a leak, shut off the tank immediately, ventilate, and have the system inspected before operating appliances.
Can frozen seals cause RV leaks later?
Yes—ice can distort or tear seals, and once temperatures rise, those damaged areas may allow water intrusion during rain. Inspect seals after a freeze event and recondition or replace any that are cracked, torn, or no longer seated evenly.
How do I keep RV doors from sticking in winter?
Clean the door gasket and apply a rubber-safe conditioner to prevent the seal from bonding to the frame when cold. Also check alignment and latch tension—minor adjustments can prevent rubbing that becomes worse when materials contract.
Should I test my RV electrical system before spring?
Yes—winter storage and temperature swings can reveal weak batteries, corroded terminals, or rodent-damaged wiring. A pre-spring check of battery health, converter/charger output, shore cord condition, and GFCI/AFCI function helps prevent first-trip failures.
How do I prevent RV roof cracking in cold weather?
Keep the roof clean, inspect sealant regularly, and touch up small gaps before water can freeze and expand into larger splits. Avoid walking on icy roofs and reduce snow load when safe because flexing under weight increases stress on seams and penetrations.
Can winter weather damage RV awnings?
Yes—snow/ice load and wind gusts can bend arms, tear fabric, and damage mounting points. The best prevention is storing awnings fully retracted during winter conditions and clearing snow from slide toppers when accessible and safe.
How do I inspect RV underbelly insulation?
Look for sagging panels, wet spots, missing fasteners, or areas where insulation has shifted—these are common indicators of water intrusion or rodent activity. On enclosed bellies, check heat ducting and any cutouts around plumbing to ensure warm air can actually reach vulnerable lines.
What causes RV furnace short cycling?
Short cycling often points to restricted airflow, an over-sensitive limit switch due to overheating, or a thermostat placement issue that reads warm too quickly. Low propane pressure or low 12V voltage can also cause unstable combustion and premature shutdowns.
How do I know if my RV furnace needs service?
Warning signs include repeated lockouts, soot around the exhaust, unusual noises, weak heat output, or a burning smell that persists after startup. If basic checks (battery voltage, clear vents, clean intake/exhaust) don’t resolve it, professional service is the safer next step.
Is winter a good time for preventative RV maintenance?
Yes—off-season is ideal for resealing, lubrication, battery care, and appliance inspections because you can address issues before peak travel demand. Preventative work in winter also reduces the chance you discover failures on the first warm-weather trip.
Can cold temperatures affect RV brakes?
Yes—cold can thicken grease, reduce battery output for breakaway systems, and allow moisture to freeze in components, especially after sitting. Before towing, inspect brake operation, check breakaway battery charge, and verify the controller and wiring perform correctly.
How do I safely store propane tanks in winter?
Store cylinders upright, outdoors or in a ventilated, code-compliant compartment, never inside living spaces or unventilated areas. Keep protective caps in place, keep away from ignition sources, and do not store near heat-producing equipment.
How often should I inspect RV safety systems?
Test CO, smoke, and propane alarms monthly and replace them according to their labeled service life, not just when they fail a test. At least seasonally, inspect propane hoses/regulator condition, check fire extinguishers, and verify emergency exits function smoothly.
What winter RV maintenance saves the most money?
Water system freeze protection (proper winterization, valve and line protection) typically saves the most by preventing burst fittings, damaged pumps, and hidden leaks. A close second is roof/seal inspection and touch-up, because stopping water intrusion early avoids expensive structural repairs.
