Suburban 2450A RV Furnace – NT-20SQ Series, 19,000 BTU LP Gas Furnace

Compact, Efficient Heating for Smaller RV Spaces

The Suburban 2450A NT-20SQ furnace is a compact, direct discharge LP gas furnace designed to deliver reliable heat in smaller RVs and tight installation spaces. With a 19,000 BTU output and energy-saving electronic ignition, this unit provides efficient, consistent warmth while minimizing power consumption.

Its lightweight design and sealed vent assembly make it a dependable solution for replacing older NT-series furnaces or upgrading to a more efficient heating system.

Who This Furnace Is Best For

This model is ideal for RV owners who need efficient heat in compact spaces without sacrificing performance:

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

RVers replacing an older NT-20 or NT-20S series furnace

Setups requiring a direct discharge (non-ducted) heating system

Users looking for lower amp draw to conserve battery power

Cold-weather campers who need reliable, consistent heat in tight spaces

This furnace is especially appealing for boondocking or off-grid use, where energy efficiency and compact size are critical.

Features & Benefits

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

Direct discharge design (no ducting required)

Energy-saving electronic ignition system

Low 2.8 amp draw for improved battery efficiency

Compact, space-saving design

Lightweight construction for easier installation

Gasket-sealed vent assembly for safe, efficient operation

Specifications

Brand: Suburban

Part Number: 2450A

Series: NT-SQ

Model: NT-20SQ

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: 22-1/2 Inches

Weight: 10.30 Pounds

Ignition Type: Electronic ignition

Venting: Gasket-sealed vent assembly

Installation Type: Direct discharge (non-ducted)

Why Choose the NT-20SQ?

Compared to older furnaces, the NT-20SQ offers:

• Improved energy efficiency
• Lower power consumption
• Compact footprint for tight RV layouts
• Reliable ignition with modern electronic controls
• It’s a great choice for replacing aging NT-series furnaces while maintaining a similar installation profile.

When Do You Need to Replace Your Furnace?

Consider replacing your furnace if you experience:

• Inconsistent or weak heat output
• Frequent ignition failures
• Excessive noise or vibration
• High power consumption draining your battery
• Aging furnace components becoming unreliable

Pro Tip

When installing a new furnace, it’s a good idea to inspect or replace:

• Thermostat
• Vent assembly and seals
• Gas line connections

Ensuring these components are in good condition will maximize performance and safety.

FAQ

Q: Is this a ducted furnace?
A: No. The NT-20SQ is a direct discharge furnace and does not require ducting.

Q: What size RV is this best for?
A: It is ideal for smaller RVs, camper vans, and compact travel trailers.

Q: Can this replace an older NT-20 furnace?
A: Yes, it is commonly used as a replacement for older NT-20 series models, but always confirm dimensions and installation requirements.