Dometic Large 40,000 BTU Door-Less Furnace

A compact but powerful 40,000 BTU Dometic furnace that is engineered for easy maintenance and superior air delivery. The compact size offers installation convenience with a horizontal or vertical mount.
Item #
99735
Special Order Item
No
Ships LTL Freight
No
Return Policy
30 Days (After Delivery)
5+ In Stock
  $1,229.98

Description / Dometic Large 40,000 BTU Door-Less Furnace

The Dometic DFLD 40121 40,000 BTU Large Furnace is a compact, lightweight heater boasting a quiet operation thanks to reduced air turbulence. For easy and flexible installation, it may be placed vertically or horizontally. With the most duct configurations on the market, you can distribute heat exactly as you need it.

Dometic has gone above and beyond to provide RVer's with a furnace that rapidly heats and has maximum air flow. Dometic standouts from the crowd with their tubular pipe design heat exchanger. With smooth and rounded bends, the air flows and heats much more evenly through the pipe without getting "trapped" or slowed down in sharp corners. Not to mention, with less air turbulence, the quieter the furnace!

The Dometic SKU for this furnace is # 9108923366.

This model DFLD40121 replaces* the following older Atwood/Dometic furnaces:

Item #'s: 32657, 32660, 32801, 32804, 32801SU, 32804SU
Model #'s: AFLD35121, AFLD40121 (BP, SP or SU models)

NOTE: When replacing an older AF model with this newer DF model, you MUST replace the access door. If going from a DF model to this DF model you do not need to replace the access door.

If a door-less application is not required or desired, you may use the Dometic Large 40,000 BTU Furnace (Model # DFLD40111) which does require a door for installation. Please note you may have to modify your existing space when going from a door-less application to a doored application.

*This furnace may not be a "direct" replacement. Depending on your application and what your current model furnace is, there COULD be modifications needed to replace your existing furnace with a new furnace.

More Information

Item # 99735
Brand Dometic
Series Mojave Series DFLD40121
Model 38355
Manufacturer SKU 9108923366
Heat Source LP Gas
Circulation Type Ducted
Furnace Access Door-less (Interior Access)
Ignition Electric
BTU's 40,000
Draw 12.5 Amps
Features 12V DC Powered Unit
Up to 9 Possible Duct Configurations
Horizontal or Vertical Configuration for flexible installation
Low Profile Compact Design
Included (1) Furnace
(2) Mounting Brackets
(2 to 4) Duct Adapter (depending on furnace model)
Dimensions Furnace (w/o Door): 16-1/2" W x 7" H x 20" D
*Please see the Installation Instructions for more detailed Installation Requirements*
Warranty Limited 2 Year Manufacturer Warranty
Net Weight 39 lbs
Special Order Item No
Return Policy 30 Days (After Delivery)
UPC 713814220945
LTL Freight No

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Works Great
Review by Trick
Replacement for a 40,000 btu Dometic heater in my Jayco. Once its in works great, the rubber seal that was on the discharge outlet of the old one I had to replace, was not available locally so I used the rope that is used on wood stoves. But than goodness I got it in before it got 'cold', 21 degrees this Morning!
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Good Unit
Review by tree
My original Dometic heater in my 2019 Jayco 40 foot travel trailer finally injested too much dirt etc and quit working. Took it out and put the new one in yesterday.Works great finally a warm trailer in the mornings. And I live in this trailer full time so good heat is a plus. Would have been nice if there had been new screws for the exhaust and either a piece of the insulation that connects heater to wooden platform. ended up using thew rope type seal used of wood stoves.
Fast delivery and only a small dent or two due to handling. Great company to work with you are now on my list for needed R/V parts.
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WARNING: This product can expose you to chemicals, which is known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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