Dometic™ DFSDH20111 RV Furnace – 18,000 BTU – LP Gas / Electric – 12V DC

DFS Series | Hall Effect Sensor | Small Size | 2-Year Warranty

Model: DFSDH20111
Series: DFS “H” Series
Fuel Type: LP Gas (Primary) / 12V DC Electric Controls
BTU Output: 18,000 BTU
Stage: Single Stage
Voltage: 12 Volt DC
Ducting: Side or Bottom Discharge
Access Doors & Thermostat Sold Separately

Product Overview

The Dometic™ DFSDH20111 is a compact 18,000 BTU single-stage RV furnace designed for smaller RVs, campers, van conversions, and specialty builds requiring efficient heating in a tight installation space.

This model belongs to the modern DFS “H” Series, featuring a Hall Effect airflow verification system that replaces the traditional mechanical sail switch. Instead of using a paddle-style airflow switch, the Hall sensor electronically monitors blower motor rotation before ignition — improving reliability and reducing maintenance.

With flexible side or bottom ducting, the DFSDH20111 offers adaptable installation options for small spaces where airflow routing is limited.

⚠ Important: Access doors and thermostat are sold separately.
⚠ Always measure your existing furnace cut-out before ordering to ensure proper fit.

Key Features

• 18,000 BTU heating capacity
• Single-stage heating operation
• LP gas combustion with 12V DC electrical control
• Hall Effect airflow verification (no mechanical sail switch)
• Side or bottom ducting configuration
• Compact small-chassis design
• Ideal for vans, truck campers, small trailers
• Access doors sold separately
• Thermostat sold separately
• 2-Year Limited Manufacturer Warranty

Specifications

• Model: DFSDH20111
• Series: DFS H Series
• BTU Rating: 18,000 BTU
• Heating Stage: Single Stage
• Fuel Type: LP Gas
• Electrical System: 12 Volt DC
• Ducting: Side or Bottom
• Width: 12 inches
• Height: 7 inches
• Depth: 20 inches
• Airflow Monitoring: Hall Effect Sensor
• Exterior Access Door Included: No
• Thermostat Included: No
• Warranty: 2-Year Limited Manufacturer Warranty

Why Choose the DFS “H” Series?

Older small RV furnaces use mechanical sail switches that can:

• Accumulate debris
• Stick or fail intermittently
• Prevent ignition
• Require periodic cleaning

The DFSDH20111 uses an electronic Hall Effect sensor to confirm blower operation, resulting in:

✔ More reliable ignition
✔ Reduced maintenance
✔ Better cold-weather performance
✔ Improved long-term durability

Ideal Applications

The DFSDH20111 is ideal for:

• Van conversions
• Compact travel trailers
• Truck campers
• Overland builds
• Ice fishing houses
• Tiny homes

Its small footprint makes it perfect for tight installation cavities where larger furnaces won’t fit.

Frequently Asked Questions (FAQ)

Q: What does the “H” stand for?
A: The “H” indicates the furnace uses a Hall Effect airflow verification system rather than a mechanical sail switch.

Q: Is this a propane furnace?
A: Yes, it operates on LP gas with 12V DC electrical control.

Q: Can it be ducted from the side or bottom?
A: Yes, this model supports side or bottom ducting for flexible installation.

Q: Are access doors included?
A: No. Compatible access doors must be purchased separately.

Q: What warranty does it carry?
A: This furnace includes a 2-year limited manufacturer warranty.