Choosing the right ducting is essential for delivering warm air efficiently throughout an RV. This guide highlights five reliable options designed for RV heating systems, including flexible foil ducts, modular ducting kits, and rotatable vent outlets. Each product is selected for compatibility with common diesel and gasoline heaters, easy installation, and durability in varying climates. Use the buying guide at the end to compare features such as diameter, length, heat resistance, and ease of use to find the best fit for your setup.
| Product | Brand | Diameter | Key Benefit |
|---|---|---|---|
| 4-Inch Flexible Foil Air Duct Hose | RecPro | 4 inches | Flexible, galvanised build for RV HVAC routing |
| 75mm Flexible Diesel Heater Ducting Kit | Copgge | 75 mm | Compatible with multiple heater brands, dual-layer construction |
| 2Pcs Square Warm Air Vent Outlet | HAIWEN | 75 mm outer diameter | 360-degree rotatable outlets for directing air |
| 2-Inch Flexible Foil Air Duct Hose | RecPro | 2 inches | Compact, corrosion-resistant 25 ft run |
| 76mm / 3-Inch Diesel Heater Ducting | Copgge | 76 mm | Y-branch connector for additional vents |
RecPro 4-Inch Flexible Foil Air Duct Hose
Product: RecPro RV 4-Inch Flexible Foil Air Duct Hose | Non-Insulated Foil Ducting | 25 Feet Long. This ducting uses galvanized steel construction with zinc coating for added durability in air conditioning and heating applications. It is designed to help move conditioned air from a furnace or air conditioner to the desired area in an RV. The 4-inch diameter supports moderate airflow with flexibility for routing through tight spaces, making it a practical choice for several common RV layouts.
Copgge 75mm Flexible Diesel Heater Ducting Kit
Product: 75mm / 2.95″ Flexible Diesel Heater Ducting Pipe Extendable Warm Hot Air Duct Outlet Connector for Eberspacher Airtronic D4 D5, for Webasto Air Top 3500 5000, for Chinese Diesel Parking Heater 5KW 8KW. This kit includes two flexible ducts with an inner diameter of 75mm, designed to connect to a Y-splitter for distributing heated air to two vents. It features dual-layer construction using aluminum foil that remains heat-resistant and flexible, and the duct can extend up to about 59 inches. It’s suitable for multiple heater brands and configurations and is a good option for expanding an existing heating system.
HAIWEN 2Pcs Square Warm Air Vent Outlet
Product: 2Pcs Square Shape Warm Air Vent Outlet, 360° Rotatable Car Heater Duct Hose Pipe Outlet. These outlets are compatible with 42/60/75mm warm air ducting and feature a removable front fascia for easy screw-access fitment. The 360-degree rotation allows precise direction of warm air, making them versatile for RV interiors where airflow needs to be aimed at multiple living areas.
RecPro 2-Inch Flexible Foil Air Duct Hose
Product: RecPro RV 2-Inch Flexible Foil Air Duct Hose | Non-Insulated Foil Ducting | 25 Feet Long. This ducting is sized at 2 inches in diameter for tighter RV spaces, offering flexibility for installation in narrow routes. The 25-foot length provides ample reach to connect a furnace or heater to multiple vents. The spring steel wire helix is laminated in polyester film, which helps resist crushing and deformation while delivering durable, corrosion-resistant performance in various climates.
Copgge 76mm / 3-Inch Diesel Parking Heater Ducting
Product: Copgge 76mm / 3Inch Diesel Parking Heater Ducting Pipe Hose with Y-branch. This kit is designed for 5KW to 8KW diesel heaters, including compatibility with Eberspacher Airtronic D4/D5 and various Chinese diesel heater models. It includes two inner-diameter ducts and a Y-branch connector to add an extra vent outlet. The ducts are made from aluminum foil and flexible paper, enabling easy routing and distribution of heated air to multiple areas in an RV, suitable for boat and motorhome ducting installations.
Buying Guide: Key Considerations For RV Heating Ducting
- Diameter compatibility: Ducts come in 2″, 4″, 75mm, and 76mm/3″ sizes. Match the duct diameter to your heater outlet and vent locations to maintain airflow efficiency.
- Material and insulation: Foil ducts are lightweight and flexible but often non-insulated. If you operate in cold climates or want reduced heat loss, consider insulated options or wrap for better efficiency.
- Durability and heat resistance: Look for aluminum foil construction with a protective outer layer and a sturdy inner helix that resists crushing, kinking, and temperature fluctuations.
- Length and routing: Longer ducts enable more flexible routing but may introduce more potential for airflow resistance. Plan routes to minimize sharp bends and maximize straight runs where possible.
- Connectors and adapters: Duct kits with Y-branch or T-connectors simplify multi-vent setups, allowing one heater to supply multiple rooms or zones within the RV.
- Rotatable outlets: 360-degree rotatable vents help direct warm air precisely where needed, improving comfort in living spaces and sleeping areas.
- Compatibility: Ensure the ducting is compatible with your specific diesel or electric heater model, including adapters for Eberspacher, Webasto, or common aftermarket units.
- Installation ease: Consider ducts with pre-attached end caps, easy-snapping connectors, and clear installation guides to reduce setup time.
- Maintenance and longevity: Durable materials resist corrosion and environmental exposure typical in RV compartments, preserving airflow and reducing replacements.
