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Dometic™ / Atwood 31809 Furnace Vent – Door Vent Assembly for AFMD25 Hydro Flame Furnace
Dometic™ / Atwood 31809 Furnace Vent – Door Vent Assembly for AFMD25 Hydro Flame Furnace
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Dometic™ / Atwood 31809 Furnace Vent – Door Vent Assembly for AFMD25 Hydro Flame Furnace
Product Overview
The Dometic / Atwood 31809 Furnace Vent (Door Vent Assembly) is a replacement exterior vent designed specifically for the Atwood AFMD25 Hydro Flame RV furnace. This component mounts on the exterior furnace door and allows proper intake and exhaust airflow while protecting the furnace from debris and weather.
A damaged or missing furnace vent can reduce airflow, impact furnace efficiency, or allow moisture and debris into the combustion chamber. Replacing it with the 31809 door vent assembly restores safe ventilation and proper furnace operation.
This vent assembly is built to match the original Atwood Hydro Flame design, ensuring a proper fit and reliable airflow for AFMD-series furnaces.
Key Features
- Genuine Dometic / Atwood furnace replacement part
- Designed for Hydro Flame AFMD25 furnaces
- Provides proper combustion air intake and exhaust ventilation
- Direct replacement for worn, damaged, or missing furnace vents
- Durable construction designed for RV exterior exposure
- Maintains safe and efficient furnace operation
Compatible Furnace Models
| Furnace Series | Compatible Models |
|---|---|
| Atwood Hydro Flame AFMD Series | AFMD25 |
Specifications
| Specification | Details |
|---|---|
| Part Number | 31809 |
| Product Type | Furnace Door Vent Assembly |
| Application | RV Furnace Exterior Vent |
| Compatible Furnace | Atwood AFMD25 Hydro Flame |
| Mounting Hardware | Not Included |
| Manufacturer | Dometic / Atwood |
When Should This Vent Be Replaced?
You may need to replace the furnace vent if:
- The exterior vent grille is cracked, bent, or missing
- Debris or insects are entering the furnace compartment
- Furnace door vent shows signs of corrosion or damage
- Airflow from the furnace exhaust appears restricted
Replacing the vent assembly ensures proper airflow and protects the furnace from environmental damage.
FAQ
What does the furnace door vent do?
The vent allows combustion air and exhaust gases to move between the furnace and outside air while protecting the system from debris and weather.
Does this include the entire furnace door?
No. Part 31809 is only the vent assembly, not the full furnace access door.
What furnace models use this vent?
It is designed specifically for the Atwood AFMD25 Hydro Flame furnace.
Does it include mounting hardware?
No, mounting hardware is typically not included and existing hardware is reused during installation.
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