Dometic RV Furnace DFL Series Dual Fuel 40000 BTU Output
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The Dometic 38362 DFL Series RV Furnace provides powerful and reliable 40,000 BTU heating for larger RVs, motorhomes, and fifth wheels. Designed for LP or natural gas operation with a bottom discharge configuration, this furnace is ideal for replacement installations where airflow direction and cutout size must be matched exactly.
This unit operates on 120V AC power and requires a wall thermostat and furnace access door (both sold separately). Existing furnace cutout dimensions must be verified prior to purchase.
Key Features & Fitment Notes
- 40,000 BTU heating capacity for large RVs and motorhomes
- Compatible with LP gas or natural gas
- Bottom discharge configuration for specific replacement applications
- Single-stage furnace operation
- 120 Volt AC power requirement
- Large-size RV furnace design
- Requires wall thermostat (sold separately)
- Requires furnace access door (sold separately)
- Existing cutout dimensions must be verified before purchase
Product Specifications
- Brand: Dometic
- Part Number: 38362
- Series: DFL
- Model: DFLA40211
- Heating Output: 40,000 BTU
- Fuel Type: LP Gas / Natural Gas
- Operation: Single Stage
- Discharge Type: Bottom Discharge
- Voltage: 120 Volt AC
- Size Category: Large
- Overall Dimensions: 16-1/2" W x 9" H x 20" D
Important RV Furnace Fitment Information
- This furnace is not universal. RV furnaces must match existing cutout size, discharge direction, gas type, and electrical requirements.
- This model features a bottom discharge design and should not be substituted for side or rear discharge furnaces.
- Measure your existing furnace opening carefully before ordering to ensure proper fit.
- Designed for use with 120V AC power and LP or natural gas supply.
- Professional installation is recommended.
- Improper fitment or installation may result in poor performance or damage and is not covered under manufacturer warranty.
Fitment Reminder: RV furnace replacements are based on physical dimensions and airflow configuration — not by RV year, make, or model alone.
Shipping & Returns
Shipping & Returns
Shipping:
Most qualifying in-stock orders are processed within one business day. In the contiguous 48 states, eligible in-stock orders placed before 12:00 PM (noon) in the customer's local time zone typically ship the same business day. Orders shipping to Alaska or Hawaii use a 12:00 PM Pacific Time cutoff (California time). These cutoffs apply only to eligible in-stock orders and are not guaranteed shipping or delivery times. Same-day shipping refers to processing and carrier handoff, not delivery. Weekends and holidays are excluded.
Payment verification, address verification, fraud review, and inventory availability may take longer. Supplier-direct fulfillment, freight shipping, and special handling may also take longer.
Returns:
Eligible products may be returned within 60 days of delivery, subject to our Return Policy. Return authorization is required. Certain products are final sale or subject to manufacturer warranty procedures, shipping charges, and applicable restocking fees.
Please inspect your order promptly upon delivery. Shipping damage, incorrect items, missing components, or quantity shortages must be reported within 3 business days after delivery. Retain the product, original packaging, shipping labels, and photographs while your claim is reviewed.

