Collection: DFMD Series Parts

The Dometic DFMD RV Furnace is a medium-capacity LP gas furnace built for reliable, ducted heating in travel trailers, fifth wheels, and motorhomes. Designed for standard RV cutouts and flexible horizontal or vertical installation, the DFMD series delivers powerful and consistent heat output in the 25,000–35,000 BTU range.

With direct spark ignition (no pilot light), sealed combustion, and efficient airflow through multiple duct outlets, the DFMD furnace provides dependable cold-weather performance while maintaining safe and controlled operation. Many models are available in doorless configurations, making them ideal replacements for older Atwood-style units.

Series: DFMD 
Best for: Medium-sized RVs, travel trailers, 5th wheels
BTU Range: ~25,000 – 35,000 BTU
Ducting & Install:

• Designed for standard RV duct systems with multiple duct outlets
• Can be horizontal or vertical
• Options exist in doorless variants (no exterior access panel needed) for simpler installs.

Design focus:

• Larger heat output suited for mid- to larger-sized RVs
• Easier integration into standard RV duct and airflow systems
• More BTU capacity for colder climates or larger interior spaces

Why it’s unique:
A step up in size and heating capacity from the DFSD, but still designed to fit common RV cutouts with flexibility in installation style.

See Parts Diagrams for all DFMD Models Here!