When the temperature drops, a dependable RV furnace turns your rolling home into a cozy retreat. Whether you’re a weekend camper or a full-time traveler, the right heating system makes all the difference between shivering through the night and waking up refreshed.
This guide breaks down ten essential products, from high-output furnaces to protective vent screens and replacement parts. You’ll learn what to look for in BTU ratings, airflow, and safety features, helping you choose the perfect setup for your camper, travel trailer, or motorhome.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED “AS IS” AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
KINGRVER 35,000 BTU RV Furnace for Camper, Travel Trailer, RV Owners
Best forLarge RVs needing max heat
- High 35,000 BTU output
- Rapid 320 CFM airflow
ConsiderMay be overkill for small campers
TONDA RV Furnace Vent Screen, Bug Screen for RV Heater Vents, 2 Pack
Best forProtecting round furnace vents
- Easy tool-free installation
- Blocks insects effectively
ConsiderOnly fits round vents
FOGATTI RV Propane Furnace 25,000 BTU for Camper, Motorhome, RV Owners
Best forComplete ready-to-install heating
- Full unit with thermostat
- Efficient heat exchanger
ConsiderLower BTU than larger models
Suburban NT-20SEQ 20,000 BTU/h Direct Discharge RV Furnace (2504ABK)
Best forCompact zone heating
- Direct discharge for small spaces
- Interior service access
ConsiderThermostat not included
New Upgrade 31501 RV Furnace Ignition Control Board Compatible with Atwood
Best forReplacing faulty ignition boards
- OEM standard fit
- Wide model compatibility
ConsiderRequires basic electrical knowledge
TONDA RV Furnace Vent Screen, Square Bug Screen for RV Heater Vents
Best forSquare vent protection
- Fits square vents well
- Easy spring hook install
ConsiderOnly for square openings
RV Furnace Vent Screen for Water Heater Vent Cover, RV Bugs Screen for Vent
Best forComplete vent protection kit
- Covers multiple vent sizes
- Stainless steel construction
ConsiderMay not fit all models
RVGUARD RV Flying Insect Screen, Furnace Vent Cover 2 Pack 2.8 x 1.3 Inch
Best forDurable pest prevention
- Corrosion-resistant steel
- Simple installation kit
ConsiderOnly round vents
31501 RV Furnace Ignition Control Circuit Board
Best forWaterproof ignition replacement
- Waterproof coating
- Broad compatibility
ConsiderNo installation guide
Furnace Heater Blower Motor Compatible with Atwood (Dometic) RV Furnaces 85…
Best forReplacing worn blower motors
- Corrosion-resistant coating
- Exact fit for listed models
ConsiderLimited model compatibility
KINGRVER 35,000 BTU RV Furnace – High-Output Heat
The KINGRVER 35,000 BTU furnace delivers serious warmth for large RVs. With a 320 CFM airflow, it heats up quickly and circulates air evenly, so you won’t have cold spots. The advanced heat exchanger boosts propane efficiency while providing consistent air up to 104°F, keeping you comfortable even in freezing temperatures.
Its built-in thermostat allows precise temperature control, and the integrated fault monitor alerts you to any issues before they become problems. Multiple safety systems, including explosion-proof ignition, give you peace of mind. If you need powerful, reliable heat for a big rig, this furnace is a top contender.
- High 35,000 BTU output
- Rapid 320 CFM airflow
- Comprehensive safety protections
- May be overkill for small campers
- Requires professional installation
TONDA RV Furnace Vent Screen – Bug Protection
Keep insects and debris out of your RV furnace with the TONDA vent screen. This 2-pack includes stainless steel mesh screens, spring hooks, silicone strips, and an installation tool, making setup a breeze. The fine 0.12-inch mesh blocks pests while allowing proper airflow, so your furnace works efficiently.
Designed to fit many Duo-Therm and Suburban vents, each screen measures 2.8 inches in diameter and 1.3 inches deep. The durable stainless steel construction resists corrosion, ensuring long-lasting protection. If you’re tired of bugs finding their way into your heater, this simple solution is a smart investment.
- Easy tool-free installation
- Blocks insects effectively
- Preserves airflow
- Only fits round vents
- Check compatibility first
FOGATTI 25,000 BTU RV Propane Furnace – Complete Unit
The FOGATTI 25,000 BTU furnace is a complete ready-to-use unit, including the motor, chamber, housing, and thermostat. You won’t need to buy extra parts, saving time and hassle. With 240 CFM airflow, it warms travel trailers and fifth-wheels quickly, even in cold climates.
Its digital thermostat offers precise temperature management, while the advanced heat exchanger improves fuel efficiency and delivers consistent 104°F hot air. This furnace is designed for easy installation and reliable operation. If you want a full package without the guesswork, the FOGATTI is a solid choice.
- Full unit with thermostat
- Efficient heat exchanger
- Digital temperature control
- Lower BTU than larger models
- May need ducting adjustments
Suburban NT-20SEQ 20,000 BTU Furnace – Direct Discharge
The Suburban NT-20SEQ is a direct discharge furnace perfect for zone heating in smaller interiors. Its black interior grille adds a sleek look, and you don’t need an outside access door—service is done from inside, with the exterior vent cap included. This simplifies installation and maintenance.
With direct spark ignition and sealed, forced-draft combustion, it operates safely and efficiently. Note that an interior wall thermostat is required separately. If you’re looking for a compact, reliable furnace for a small camper or trailer, this Suburban model is a trusted name.
- Direct discharge for small spaces
- Interior service access
- Sealed combustion design
- Thermostat not included
- Lower BTU output
CHYKUANG 31501 Ignition Control Board – Atwood Compatible
Brand: CHYKUANG
A reliable, affordable replacement for common ignition failures.
If your Atwood or Dometic Hydro Flame furnace won’t ignite, the CHYKUANG 31501 ignition control board is a direct replacement. It’s compatible with many series, including 85-I, 85-II, 8500-III, and 8900 models. This board sends the signal to open the gas valve and generates the spark to ignite the burner.
Manufactured to OEM standards, it installs directly without modifications. Just disconnect power before installation. This is a cost-effective fix to get your furnace running again, saving you a service call. If you’re handy with basic tools, this is a practical solution.
- OEM standard fit
- Wide model compatibility
- Easy direct installation
- Requires basic electrical knowledge
- No troubleshooting guide included
TONDA Square Vent Screen – Pest Barrier
The TONDA square vent screen is designed for Duo-Therm and Suburban furnace vents with square openings. Measuring 4.5 inches per side and 1.3 inches deep, it fits many models, but you should verify dimensions before purchasing. The kit includes a stainless steel mesh screen, spring hooks, and a silicone strip for easy installation.
The fine 0.12-inch mesh blocks insects and pests while maintaining airflow, so your furnace operates normally. The open mesh design ensures ventilation isn’t restricted. If you have square vents, this screen is a simple way to keep critters out and protect your heating system.
- Fits square vents well
- Easy spring hook install
- Airflow-friendly mesh
- Only for square openings
- Size verification needed
Wadoy RV Vent Screen Kit – Multi-Purpose Protection
Brand: Wadoy
A versatile kit to safeguard both furnace and water heater vents.
The Wadoy vent screen kit covers multiple needs with two water heater screens (8.5×6 and 4.5×4.5 inches) and two furnace screens (2.8 inches), plus six spring fasteners and an installation tool. This comprehensive set fits Atwood and Suburban water heaters and furnaces, offering broad compatibility.
The stainless steel mesh blocks insects and debris without hindering airflow. The 4.5-inch square screen fits Atwood furnace models like 2540 and 8516, while the round screens suit standard vents. If you want to protect all your RV’s vents in one purchase, this kit is convenient and cost-effective.
- Covers multiple vent sizes
- Stainless steel construction
- Includes installation tool
- May not fit all models
- Screens are separate pieces
RVGUARD Flying Insect Screen – Durable 2-Pack
The RVGUARD flying insect screen comes in a 2-pack, each measuring 2.8 inches in diameter and 1.3 inches tall, fitting most Duo-Therm and Suburban furnace vents. The high-grade stainless steel ensures durability and corrosion resistance, so your investment lasts. The mesh grid is 0.3 inches, effectively blocking pests.
Installation is simple with the included spring hooks, installation tool, and silicone rubber edging that provides a snug fit. This screen is an economical way to protect your furnace and RV from flying insects. If you need a reliable, long-lasting bug barrier, this is a great pick.
- Corrosion-resistant steel
- Simple installation kit
- Effective insect barrier
- Only round vents
- Mesh may need cleaning
CHYKUANG 31501 Circuit Board – Waterproof Coating
Brand: CHYKUANG
A durable, corrosion-resistant board for reliable furnace ignition.
This CHYKUANG 31501 circuit board is another reliable replacement for Atwood/Dometic Hydro Flame furnaces, compatible with models like 7912-II and 85 series. It replaces part numbers 31501, 33488, 33727, and 30575. The board features a waterproof surface coating for corrosion resistance, extending its lifespan.
Installation is straightforward for those comfortable with basic wiring. Just disconnect power first. This board is designed with high-quality materials and precise craftsmanship, ensuring dependable ignition. If you need a spare or a replacement, this is a solid option to keep your furnace running.
- Waterproof coating
- Broad compatibility
- High-quality materials
- No installation guide
- Electrical experience helpful
Gobuywell Blower Motor – Atwood 8525 IV & 8531 IV
Brand: Gobuywell
A durable blower motor to keep your Atwood furnace running smoothly.
The Gobuywell blower motor is a direct replacement for Atwood (Dometic) RV furnaces models 8525 IV and 8531 IV, with part numbers 37697, 20269K, 8531, 8525, and 30133. It ensures efficient air circulation, distributing warm air evenly throughout your RV for consistent comfort.
Its corrosion-resistant coating is built to handle off-road conditions and harsh weather, preventing downtime on your trips. This motor is a practical fix if your furnace blower fails. With easy installation, you can restore your heating system’s performance. If you need a reliable blower motor, this is a dependable choice.
- Corrosion-resistant coating
- Exact fit for listed models
- Efficient air distribution
- Limited model compatibility
- Professional install recommended
Buyer’s Guide: What to Consider
Choosing the right RV furnace involves more than just picking a high BTU number. Consider your RV’s size, climate, and installation complexity. This guide covers key factors to help you make an informed decision, whether you’re upgrading or replacing parts.
- BTU Output: BTU (British Thermal Units) measures heating capacity. Higher BTU heats larger spaces faster. For small campers, 20,000 BTU may suffice; for large RVs, consider 35,000 BTU. Match the output to your RV's size to avoid overworking the furnace.
- Airflow (CFM): Cubic Feet per Minute (CFM) indicates how much air the furnace circulates. Higher CFM means quicker warm-up and even heat distribution. Look for at least 240 CFM for medium trailers and 320 CFM for larger rigs to ensure consistent comfort.
- Safety Features: Look for explosion-proof ignition, sealed combustion, and fault monitors. These protect against gas leaks and malfunctions. Safety certifications from recognized bodies add peace of mind, especially when using propane in confined spaces.
- Compatibility and Installation: Check if the furnace fits your RV's existing ducting and electrical system. Some units are complete packages, while others require separate thermostats. For replacement parts, verify model numbers to ensure a perfect fit and avoid costly mistakes.
- Vent Protection: Vent screens prevent insects and debris from entering the furnace, maintaining airflow and efficiency. Choose screens that match your vent shape (round or square) and size. Stainless steel options offer durability and corrosion resistance.
Conclusion
Selecting the best RV furnace depends on your specific needs. For large RVs, the KINGRVER 35,000 BTU offers powerful heat, while the FOGATTI 25,000 BTU is a complete package for medium trailers. The Suburban NT-20SEQ is great for small spaces. Don’t forget vent screens like TONDA or RVGUARD to protect your investment.
For repairs, ignition boards and blower motors from CHYKUANG and Gobuywell are reliable options. Assess your RV’s size, climate, and existing setup to choose the right product. With the right furnace and accessories, you’ll stay warm and comfortable on every trip.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.
Whether you're looking for camping equipment or the latest fashion accessories, Erica's articles are the perfect resource for finding the best products that fit your lifestyle.