Suburban SF-Q Series Furnace - 2559A
Designed, built and backed by one of the most trusted names in the RV Industry, the Suburban line of powerful furnaces provide superior, dependable heating in uniform cabinet sizes for installation flexibility. Warm up to an inviting coach interior with quiet, low noise, dependable heating solutions. SF-Q Models feature top or side rear gas and electrical connections with an exterior access door for installation and service access.
Direct Discharge Furnaces With Attractive Grilles For Zone Heating Of Smaller RVs, Trailers, Truck Campers And Even Pop-Ups
Maximum Heating Performance In A Low-Profile Design
At Only 7-1/2 Inches High, They Can Be Easily Installed In Areas That Might Otherwise Be Left Unused
Provides Maximum Heating Performance In A Ducted Unit, With Capacities From 20,000 To 40,000 BTUH
Specifications
| Type |
LP Gas |
| BTU Level / Output |
30,000 BTU |
| Stage |
Single |
| Discharge Type |
Bottom / Side / Top |
| Ignition Type |
Direct Spark Ignition |
| Width |
17 inches |
| Height |
7.5 inches |
| Depth |
20 inches |
| With Vent Assembly |
Yes |
What our Experts Think
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Balanced Heat Output: Delivers 30,000 BTU of ducted propane heat — strong performance for small to mid‑size RVs, campers, and trailers needing steady warmth.
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Low‑Profile Fit: Compact dimensions save space, making it easier to fit into tight furnace openings without sacrificing heating power.
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Flexible Venting Options: Top, side, and bottom discharge choices allow adaptable duct routing to suit varied interior layouts.
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Reliable Ignition System: Direct spark ignition offers quick, pilot‑free starts and consistent operation in changing travel conditions.
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Sealed Combustion Efficiency: Sealed forced‑draft design improves heating efficiency while minimizing drafts and heat loss during operation.
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Durable Construction for RV Life: Built to withstand vibration, frequent use, and typical RV travel stresses — dependable for long trips.
Q&A
Q: What is the Suburban SF‑Q Series Furnace – 2559A?
A: A propane RV furnace designed to deliver dependable heat for motorhomes and travel trailers.
Q: What fuel does this furnace use?
A: It operates on LP (propane) gas.
Q: Is the 2559A suitable for RV heating?
A: Yes — built specifically for recreational vehicle HVAC systems.
Q: How does this furnace perform?
A: Provides consistent, reliable heat output for cold weather comfort.
Q: Is it energy efficient?
A: Yes — engineered for efficient propane use.
Q: Is installation straightforward?
A: Yes — designed to fit standard RV furnace openings for easy replacement or upgrade.
Q: Is this furnace safe?
A: Yes — includes built‑in safety features for secure operation.
Maintenance Tips
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Clear Vents: Keep intake/exhaust vents free of snow, debris, and nests to ensure proper airflow.
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Air Filter: Clean or replace the air filter monthly during heavy use to maintain efficiency.
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Interior Cleaning: With power off, vacuum dust from the blower, burners, and furnace interior.
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Gas Line Check: Annually inspect gas lines and connections for leaks using approved leak‑detection fluid.
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Flame Check: Ensure a steady, strong blue flame at startup; yellow or irregular flames may signal adjustment needs.
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Control & Safety Test: Test thermostat response and safety shut‑offs before the heating season.
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Annual Professional Tune‑Up: Schedule yearly professional maintenance to inspect the heat exchanger and optimize performance.
Damage 
Loss 
Theft 
