Suburban 2587A RV Furnace – SF-35VHFQ Series, 35,000 BTU Two-Stage Ducted Furnace

High-Output, Two-Stage Heating with Flexible Installation

The Suburban 2587A SF-35VHFQ furnace is a 35,000 BTU LP gas RV furnace designed for powerful, ducted heating in larger RVs. Featuring two-stage heating, this unit adjusts output based on demand to provide more consistent temperatures, improved efficiency, and reduced cycling.

Built on Suburban’s VHFQ platform, this furnace offers multi-position installation (vertical or horizontal) along with a front gas connection for interior access, making it highly versatile for a wide range of RV layouts.

Who This Furnace Is Best For

This furnace is ideal for RV owners who need maximum heating performance with installation flexibility:

• Owners of large travel trailers, fifth wheels, and motorhomes
• RVs requiring 35,000 BTU output for cold-weather or four-season use
• Installations needing vertical or horizontal mounting flexibility
• Customers replacing an older SF-35, SF-35Q, or SF-35F furnace
• RVers looking for interior access (no exterior furnace door required)
• Users wanting more consistent temperatures with two-stage heating

This model is especially well-suited for multi-room RV layouts where consistent heat distribution is essential.

Features & Benefits

• 35,000 BTU heating capacity for larger RVs
• Two-stage heating for improved comfort and efficiency
• Multi-position installation (vertical or horizontal)
• Side ducted design for consistent airflow distribution
• Front gas connection for interior access
• No exterior access door required
• Direct spark ignition for reliable startups
• Compact, low-profile cabinet (7-1/2 inch height)
• Backed by a limited 2-year warranty

Specifications

Brand: Suburban

Part Number: 2587A

Series: SF-FQ (VHFQ configuration)

Model: SF-35VHFQ

Fuel Type: LP Gas

BTU Output: 35,000 BTU

Heating Type: Two-stage

Amp Draw: 8.5 Amps

Height: 7-1/2 Inches

Width: 17 Inches

Depth: 20 Inches

Ducting: Side ducted

Installation: Vertical or horizontal

Gas Connection: Front (interior access)

Ignition Type: Direct spark ignition

Warranty: Limited 2 year

Why Choose the SF-35VHFQ?

Compared to standard furnaces, the SF-35VHFQ offers:

• Higher BTU output for larger RVs
• Greater installation flexibility with multi-position mounting
• More consistent temperatures with two-stage operation
• Interior servicing with no exterior access panel
• Reliable performance in colder climates

This makes it a top choice for RV owners looking for maximum performance, flexibility, and comfort.

When Do You Need to Replace Your Furnace?

Consider upgrading if you experience:

• Difficulty heating larger RV spaces
• Uneven temperatures across rooms
• Frequent cycling or inefficient operation
• Excessive furnace noise
• Limited installation flexibility with your current unit

Pro Tip

When installing a multi-position furnace, ensure proper airflow clearance and duct routing for your specific orientation. Correct installation is key to maximizing performance and longevity.

FAQ

Q: Can this furnace be installed vertically or horizontally?
A: Yes. The SF-35VHFQ is designed for multi-position installation.

Q: Does this require an exterior access door?
A: No. This model is designed for interior access and does not require an exterior door.

Q: What is the benefit of two-stage heating?
A: Two-stage furnaces adjust output based on demand, providing more consistent temperatures and improved efficiency.