Suburban NT-16SQ RV Furnace

The Suburban NT-16SQ is a solid, no-frills ducted furnace well suited for smaller travel trailers and campers needing dependable winter heat without a huge propane draw.

4.3

HitchHaven score4.3 out of 5 · our editorial rating

16,000 BTU/hr output for ducted heating systems
Direct spark ignition (DSI) with no standing pilot
12V DC electronic control board
Compact sealed combustion chamber
Compatible with standard RV ducting and return air plenum
Sail switch safety shutoff for blower confirmation

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Overview Specs Pros & cons Full review Related

The verdict

The Suburban NT-16SQ is a solid, no-frills ducted furnace well suited for smaller travel trailers and campers needing dependable winter heat without a huge propane draw. It's an easy drop-in replacement for existing Suburban-compatible cutouts, though larger rigs or extreme cold climates may want to step up to a higher BTU model.

Spec plate

Heat Output: 16,000 BTU/hr
Ignition Type: Direct Spark Ignition (DSI)
Electrical Requirement: 12V DC
Propane Consumption: ~1.2 lb/hr
Furnace Type: Ducted, forced-air

Pros & cons

What we like

Fast, reliable heat output for small to mid-size RVs
Low amp draw, easy on house battery
Direct spark ignition saves propane vs standing pilot
Fits standard Suburban furnace cutouts for easy replacement
Quiet blower operation once warmed up

What to watch

Ducted-only design requires existing ductwork, not a stand-alone heater
Needs stable 12V power; weak batteries can trigger ignition faults
Limited BTU output may be insufficient in very cold climates or larger rigs
Replacement parts/igniters can be pricier than generic furnace brands

Full review

The Suburban NT-16SQ furnace is a compact forced-air heating unit built specifically for RVs, campers, and travel trailers that need reliable warmth without sacrificing valuable storage or living space. Rated at 16,000 BTUs, this furnace strikes a practical balance for small to mid-sized rigs, delivering enough heating capacity to keep a camper comfortable during cold-weather trips while remaining efficient on propane consumption. Its compact sidewall-vented design allows it to fit into tight furnace compartments common in travel trailers, pop-up campers, and smaller motorhomes, making it a popular replacement option for owners upgrading from older, less efficient units or dealing with a failed factory-installed furnace.

Engineered with durability and ease of maintenance in mind, the NT-16SQ features a direct-spark ignition system that eliminates the need for a pilot light, conserving battery power and propane when the furnace isn't actively running. The unit draws combustion air from outside the RV and vents exhaust safely through the sidewall, keeping indoor air quality clean and reducing the risks associated with older pilot-based systems. Its squared-off housing design is intended to integrate seamlessly with ducted systems already common in many RV floor plans, allowing for straightforward installation whether used as an OEM replacement or an upgrade. The blower motor is designed to circulate heated air efficiently through existing ductwork, helping maintain even warmth throughout the cabin even in colder climates.

Built for the rigors of life on the road, the Suburban NT-16SQ is constructed with corrosion-resistant components suited to withstand the vibration, temperature swings, and humidity exposure typical of RV travel. Its compact footprint and straightforward 12-volt DC electrical requirements make it compatible with standard RV electrical systems, while its propane-fed operation ensures reliable heat even when off-grid or boondocking away from shore power. For RV owners seeking a dependable, efficient, and space-conscious furnace solution, the NT-16SQ offers the heating performance and installation flexibility needed to keep camping trips comfortable from fall through winter and into early spring.

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