Keeping an RV warm during winter requires effective strategies such as running the furnace, adding skirting to minimize wind, and using thermal curtains to reduce heat loss. Additionally, sealing drafts and employing a space heater can provide supplementary warmth when on shore power.
Generated from this page. Always verify technical specs.
Winter RVing means fighting cold from below (underbelly) and through windows. This guide covers furnace use, skirting, curtains, and sealing—plus when a space heater helps. See our RV heating and cooling systems guide, furnace troubleshooting, and winterization guide for water line protection.
Keep the furnace maintained—clean filters, check propane. If it's not working, see RV furnace not working. Set the thermostat to a comfortable level; cycle as needed to save propane.
Wind under the rig steals heat. Skirting (foam boards, vinyl, or purpose-built RV skirting) blocks airflow and keeps the underbelly warmer. Helps protect water lines too. A recommended solution for full-timers in cold climates.
Windows are major heat loss points. Thermal or blackout curtains reduce heat escape. Reflective foil in windows (when parked) adds insulation. Draw curtains at night.
Weatherstrip doors and windows. Use draft snakes at door bottoms. Check around slide-outs. Seal any gaps that let cold air in.
When on shore power, an electric space heater can supplement the furnace and save propane. Choose models with tip-over and overheat protection. See space heater vs furnace for cost comparison.
If you're not using the RV in winter, winterize the water system to prevent freeze damage. Heating and plumbing go together in cold weather.
If furnace, propane, or heating system issues persist after DIY checks, a licensed RV or HVAC technician can diagnose and repair. Request local RV HVAC service below.
Furnace inspection, propane check, skirting prep, condensation management. Use before cold-weather trips.
Download ChecklistRun the furnace, add skirting, use thermal curtains, seal drafts. A portable electric space heater can supplement when on shore power.
Skirting significantly reduces heat loss from the underbelly and is recommended for extended cold-weather stays.
Yes, when on shore power. Electric models with safety features are fine. Never use unvented propane heaters indoors.
Depends on insulation and heating. Well-prepared RVs can handle single digits with furnace, skirting, and draft sealing. Water lines are the weak point—keep heat on or winterize.
Get RV HVAC repair in your area
Same day service and emergency repairs are available. If you do not feel comfortable diagnosing 120V electrical issues, or if the compressor, capacitor, or refrigerant system has failed, professional repair is strongly recommended to avoid electrocution or permanent system damage.
We’re not in your area yet. Join the waitlist and we’ll notify you when RV HVAC partners launch safely near you.
If you're diagnosing RV electrical or appliance problems, these guides may help:
Diagnosing RV electrical and mechanical issues often requires a few basic tools. Recommended tools used in these guides:
RV AC Troubleshooting Flowchart | RV Air Conditioner Upgrade | RV Mini Split Air Conditioner | RV Mini Split Installation | Best Mini Split for RV | RV Mini Split Solar Power | Rooftop AC vs Mini Split | RV AC Not Cooling | RV AC Running But Not Cooling Enough | RV AC Airflow Problems | RV AC Hard Start Capacitor Guide | When to Replace RV AC vs Mini Split | RV AC Compressor Failure Symptoms | RV AC Freezing Up | RV AC Short Cycling | RV AC Leaking Water | RV AC Fan Running But No Cold Air | RV AC Compressor Not Starting | RV AC Capacitor Failure | RV AC Capacitor Replacement | How To Test RV AC Capacitor | How To Test RV AC Voltage at Unit | How To Clean RV AC Evaporator Coils
DecisionGrid content is independently researched. We evaluate products using technical specifications, wattage math, and compatibility checks—not sponsor relationships. Affiliate links do not influence rankings. Our safety-first philosophy prioritizes voltage protection, load calculations, and real-world use cases. Content is reviewed quarterly; specs are verified and broken links fixed. We do not accept sponsored placements or paid rankings.
As an Amazon Associate I earn from qualifying purchases.
Last updated: March 2026 · Reviewed for technical accuracy