Suburban 2504ABK RV Furnace – NT-20SEQ Series, 19,000 BTU (Black Access Door)

Efficient, Flexible Heating for Compact RV Applications

The Suburban 2504ABK NT-20SEQ furnace is a compact LP gas RV furnace designed to deliver reliable 19,000 BTU heating performance with added installation flexibility. Featuring an optional side duct and a gasket-sealed vent assembly, this unit provides efficient heat distribution while maintaining safe and consistent operation.

This model includes a black composite access door, making it a great choice for RV owners looking for both performance and a clean, modern exterior appearance.

Who This Furnace Is Best For

This furnace is ideal for RV owners who need compact heating with added ducting flexibility:

Owners of travel trailers, camper vans, and smaller fifth wheels

RVs that require optional side ducting in addition to direct discharge

Customers replacing an older NT-20, NT-20S, or NT-20SE furnace

Users looking for low amp draw (2.8A) for battery efficiency

RVers who want a factory-finished black exterior access door

This model is especially appealing for space-constrained installations where a standard ducted furnace may not fit.

Features & Benefits

19,000 BTU heating capacity for small to mid-size RVs

Optional side duct for improved heat distribution

Energy-saving electronic ignition system

Low 2.8 amp draw for efficient power usage

Compact, space-saving design

Gasket-sealed vent assembly for safe operation

Includes black composite exterior access door

Ideal for replacement or upgrade applications

Specifications

• Brand: Suburban
• Part Number: 2504ABK
• Series: NT-SEQ
• Model: NT-20SEQ
• Fuel Type: LP Gas
• BTU Output: 19,000 BTU
• Amp Draw: 2.8 Amps
• Width: 9-3/8 Inches
• Height: 9-1/2 Inches
• Depth: 21-1/8 Inches
• Ignition Type: Electronic ignition
• Venting: Gasket-sealed vent assembly
• Ducting: Optional side duct
• Access Door: Black composite included

Why Choose the NT-20SEQ?

Compared to direct discharge-only furnaces, the NT-20SEQ offers:

Greater installation flexibility with optional ducting

Improved heat distribution in multi-area layouts

Efficient operation with low power consumption

Compact size for tight RV spaces

It’s a strong upgrade option for RVs needing both space efficiency and better airflow control.

When Do You Need to Replace Your Furnace?

Consider replacing your furnace if you experience:

• Weak or uneven heating
• Frequent ignition issues
• Excessive noise or vibration
• Aging components causing unreliable performance
• Limited airflow in certain areas of your RV

Pro Tip

If upgrading from a direct discharge furnace, consider adding ducting to take advantage of the NT-20SEQ’s side outlet. This can significantly improve heat distribution throughout your RV.

FAQ

Q: Is this a ducted furnace?
A: It supports an optional side duct, allowing for partial ducting while still functioning as a compact furnace.

Q: What makes this different from the NT-20SQ?
A: The NT-20SEQ includes an optional side duct for improved airflow flexibility, while the NT-20SQ is strictly direct discharge.

Q: Does this include the exterior access door?
A: Yes, this model includes a black composite access door.