Suburban SF-30FQ 30K BTU Ducted RV Furnace | Front Gas | Horizontal

Heat your mid-size RV with the Suburban SF-30FQ 30,000 BTU Ducted Furnace (References 2558A, 2588A). Suburban's proven SF-FQ series ducted furnace — the FQ variant with gas connecting at the front of the unit.

⚠️ FQ Variant — Gas Connects at the FRONT

Gas line connects at the FRONT of the unit. Plan for gas line routing if your existing installation has gas connecting elsewhere.

⚠️ Horizontal Installation Only

The SF-30FQ is designed for horizontal installation only. If your installation requires vertical mounting, this is not the right furnace.

30,000 BTU Heating for Mid-Size RVs

• BTU Input: 30,000 BTU/hr
• Ducted configuration
• LP propane fuel

Ducting Requirements

• Supply ducts: 3 × 4" diameter
• Return air: 55 sq inches

Electrical

• Voltage: 12V DC
• Amp Draw: 8 amps

Wide Suburban Replacement Compatibility

• SF-25FQ, SF25F, SF25VHFQ
• SF-30FQ, SF30F, SF30VHFQ

⚠️ Replacing a Dometic DFMD or Atwood AFMD? Read This First

The SF-30FQ can also replace Dometic DFMD and Atwood AFMD furnaces at 25K–30K BTU (Atwood/Dometic HydroFlame 25K–30K BTU), with two critical fitment differences:

• Width difference: Dometic/Atwood furnaces are 1" WIDER than Suburban. Plan for the 1" gap.
• Gas line side: Dometic/Atwood have gas on the LEFT side; this Suburban connects at the FRONT. Gas line will need re-routing.

⚠️ Packaging Note

Ships double-boxed for shipping to prevent transit damage. The original manufacturer box may not be included.

What's Included

• (1) Suburban SF-30FQ furnace
• Vents
• Mounting screws
• Installation manual

2-Year Suburban Manufacturer Warranty

⚠️ Professional Installation Required

RV furnace installation involves working with propane gas, 12V DC electrical, ducting, and structural mounting. Installation should be performed by a qualified RV service technician. Always leak-test gas connections after installation.

Pairs with Suburban SF Series Repair Parts

If you're servicing or restoring a Suburban furnace, consider these related repair parts:

• Igniter electrodes: Suburban 525009 (broad SF/SFV compatibility) or 525051 (SF/SFV Q and FQ specific)

Key Features

• Genuine Suburban SF-30FQ 30,000 BTU ducted furnace
• FQ variant — gas connects at front
• Horizontal installation only
• 30,000 BTU/hr input
• LP propane fuel
• 12V DC, 8 amp draw
• 3 × 4" duct supply, 55 sq in return
• Replaces: SF-25FQ, SF25F, SF25VHFQ, SF-30FQ, SF30F, SF30VHFQ; Dometic DFMD, Atwood AFMD (25K–30K BTU) with fitment caveats
• Includes: Vents, mounting screws, manual (double-boxed for shipping; original manufacturer box may not be included)
• Dimensions: 7.5" × 17" × 20"
• Weight: 29 lbs
• Backed by 2-year Suburban manufacturer warranty

Specifications

• Brand: Suburban
• Model: SF-30FQ
• Cross-References: 2558A, 2588A
• Type: Ducted RV Furnace
• Heating Input: 30,000 BTU/hr
• Fuel: LP (Propane)
• Gas Connection Location: Front (FQ variant)
• Installation Orientation: Horizontal only
• Voltage: 12V DC
• Amp Draw: 8 A
• Supply Ducts: 3 × 4" required
• Return Air: 55 sq inches required
• Dimensions: 7.5" × 17" × 20"
• Weight: 29 lbs
• Replaces (Suburban): SF-25FQ, SF25F, SF25VHFQ, SF-30FQ, SF30F, SF30VHFQ
• Replaces (Dometic/Atwood): DFMD, AFMD (25K–30K BTU) — with fitment caveats
• Includes: Furnace, vents, mounting screws, manual (double-boxed; original manufacturer box may not be included)
• Warranty: 2-year Suburban manufacturer warranty