Dometic™ 35525 RV Furnace – Model DFMD25111 – 25,000 BTU – LP Gas – 12V DC

DFM Series | Single Stage | Side or Bottom Ducted | Medium Size | 2-Year Warranty

Part Number: 35525
Model: DFMD25111
Series: DFM (Medium Series)
Fuel Type: LP Gas (Propane)
BTU Output: 25,000 BTU
Heating Stage: Single Stage
Voltage: 12 Volt DC
Ducting: Side or Bottom Discharge
Outside Access Door Required (Sold Separately)
Thermostat Sold Separately

Product Overview

The Dometic™ DFMD25111 (Part #35525) is a reliable 25,000 BTU single-stage LP gas RV furnace designed for medium-sized travel trailers, fifth wheels, and motorhomes requiring efficient and flexible heating.

Built on Dometic’s proven DFM Series medium chassis, this furnace operates on 12 Volt DC power and supports both side or bottom ducting, making it adaptable for a variety of floor plans.

⚠ Important: This furnace requires a separate exterior access door (sold separately) for proper installation and venting.
⚠ Always measure your existing furnace cut-out, especially depth, to ensure the new deeper dimensions will fit properly.

Key Features

• 25,000 BTU heating capacity
• Single-stage heating operation
• LP Gas (propane) system
• 12 Volt DC electrical operation
• Side or bottom duct compatibility
• Medium-size installation platform
• Outside access door required (sold separately)
• Compatible wall thermostat required (sold separately)
• 2-Year Limited Manufacturer Warranty

Specifications

• Part Number: 35525
• Model: DFMD25111
• Series: DFM
• BTU Rating: 25,000 BTU
• Fuel Type: LP Gas
• Heating Stage: Single Stage
• Voltage: 12 Volt DC
• Ducting Configuration: Side or Bottom
• Width: 16-1/2 inches
• Height: 7-3/8 inches
• Depth: 20 inches
• Access Door Included: No (Required)
• Thermostat Included: No
• Warranty: 2-Year Limited Manufacturer Warranty

Required Exterior Access Door

This model requires a compatible Dometic / Atwood exterior furnace access door (sold separately).
Select the proper door color to match your RV exterior.

Installation Notes

• Designed for side or bottom duct systems
• Proper exterior door installation ensures safe combustion airflow and weather-tight sealing
• Confirm propane supply alignment and electrical connections
• Measure your existing cut-out dimensions before ordering
• Verify that your installation cavity accommodates the updated depth

Ideal Applications

The DFMD25111 is ideal for:

• Mid-size travel trailers
• Fifth wheels
• Class C motorhomes
• RV upgrades replacing older Atwood DFMD25 models

Frequently Asked Questions (FAQ)

Q: Is this a two-stage furnace?
A: No. This is a single-stage 25,000 BTU furnace.

Q: Does this furnace include an exterior access door?
A: No. A compatible outside access door must be purchased separately.

Q: What voltage does it operate on?
A: 12 Volt DC.

Q: Can this furnace be ducted from either side or bottom?
A: Yes, it supports both side and bottom discharge configurations.

Q: What warranty is included?
A: This furnace carries a 2-year limited manufacturer warranty.