Dometic™ DFMDH35111 RV Furnace – 35,000 BTU – LP Gas – Bottom Discharge – 12V DC

DFM Series | Hall Effect Sensor | Medium Size | 2-Year Warranty

Model: DFMDH35111
Series: DFM “H” Series
Fuel Type: LP Gas (Propane)
BTU Output: 35,000 BTU
Stage: Single Stage
Voltage: 12 Volt DC
Discharge Type: Bottom Discharge
Access Door Required (Sold Separately)
Thermostat Sold Separately

Product Overview

The Dometic™ DFMDH35111 is a high-output 35,000 BTU LP gas RV furnace designed for medium-sized installations requiring bottom-discharge airflow and dependable cold-weather performance.

Part of Dometic’s advanced DFM “H” Series, this model features a modern Hall Effect airflow verification system, replacing the traditional mechanical sail switch. The Hall sensor electronically monitors blower motor rotation to confirm proper airflow before ignition — improving reliability and reducing common service issues.

The DFMDH35111 also includes Built-In Soft Start technology, reducing startup electrical surge and placing less strain on RV wiring and battery systems.

⚠ Important: This model requires the purchase of a compatible exterior access door (sold separately).
⚠ Always measure your existing cut-out to ensure proper fit before ordering.

Key Features

• 35,000 BTU heating capacity
• LP gas (propane) operation
• Single-stage heating performance
• Bottom discharge airflow configuration
• 12 Volt DC operation
• Hall Effect airflow verification (no sail switch)
• Built-In Soft Start technology
• High-output heating for larger RV spaces
• Medium-size footprint
• Compatible access door required (sold separately)
• Thermostat sold separately
• 2-Year Manufacturer Warranty

Specifications

• Model: DFMDH35111
• Series: DFM H Series
• BTU Rating: 35,000 BTU
• Fuel Type: LP Gas
• Heating Stage: Single Stage
• Voltage: 12 Volt DC
• Airflow Configuration: Bottom Discharge
• Width: 16-1/2 inches
• Height: 7 inches
• Depth: 20 inches
• Airflow Monitoring: Hall Effect Sensor
• Soft Start: Yes
• Exterior Access Door Included: No (Required for installation)
• Thermostat Included: No
• Warranty: 2-Year Limited Manufacturer Warranty

Why Choose the DFM “H” Series?

Older RV furnaces rely on mechanical sail switches to verify airflow. Over time, these can:

• Become dirty or stick
• Cause intermittent ignition failures
• Require seasonal cleaning or replacement

The Hall Effect system in the DFMDH35111 eliminates that mechanical component by electronically monitoring blower motor rotation — resulting in:

✔ Improved ignition consistency
✔ Reduced service issues
✔ Better performance in cold or dusty environments
✔ Enhanced long-term reliability

Installation Notes

• This model requires a compatible exterior access door, purchased separately.
• Bottom discharge design directs heated air downward into floor duct systems.
• Always verify cut-out dimensions before ordering.

Frequently Asked Questions (FAQ)

Q: What does the “H” in DFMDH mean?
A: It designates a Hall Effect airflow verification system instead of a mechanical sail switch.

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

Q: Is this furnace propane?
A: Yes. It operates on LP gas (propane).

Q: Does this model use 12V DC?
A: Yes. It operates on standard 12 Volt DC power.

Q: Does it include a thermostat?
A: No. A compatible furnace thermostat must be purchased separately.

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