Suburban 2609A Furnace Core – RP-35Q – SF-35 / SF-35Q / SF-42 / SF-42Q Replacement

Product Overview

The Suburban 2609A Furnace Core (RP-35Q) is a direct replacement heating core designed for select Suburban SF and SF-Q Series furnaces, including SF-35, SF-35Q, SF-42, and SF-42Q models. This high-performance core restores proper heating function by replacing worn or damaged internal furnace components.

With a 35,000 BTU rating and compatibility with electronic ignition systems, this furnace core is an ideal solution for restoring reliable heat without replacing the entire furnace unit.

Key Features & Benefits

• Direct replacement for Suburban part #2609A
• Compatible with both SF and SF-Q Series furnaces
• Restores full heating performance and efficiency
• 35,000 BTU output for strong, consistent heat
• Designed for electronic ignition systems
• Precision fit for proper installation
• Cost-effective alternative to full furnace replacement

Compatibility

Compatible with the following Suburban furnace models:

• SF-35
• SF-35Q
• SF-42
• SF-42Q

Replaces:

• RP-35Q Furnace Core Assembly

Product Specifications

• Part Number: 2609A
• Model: RP-35Q
• BTU Rating: 35,000 BTU
• Ignition Type: Electronic Ignition
• Dimensions:
  • Height: 7-1/2 inches
  • Width: 12 inches
  • Depth: 20 inches
• Application: Suburban SF & SF-Q Series Furnaces

What’s Included

• (1) Suburban 2609A Furnace Core Assembly (RP-35Q)

Common Issues This Part Solves

• Furnace blowing cold air
• Weak or inconsistent heat output
• Cracked or failing heat exchanger/core
• Furnace short cycling or overheating
• Aging or worn internal furnace components

Installation Notes

• Professional installation is recommended
• Verify furnace model compatibility before purchase
• Disconnect power and gas supply prior to installation
• Follow all Suburban service and safety guidelines

Why Replace the Furnace Core Instead of the Whole Furnace?

Replacing the furnace core allows you to restore your RV furnace’s heating performance at a fraction of the cost of a full unit replacement. The Suburban 2609A is engineered to deliver OEM-level performance while extending the life of your existing furnace system.

Frequently Asked Questions (FAQ)

Q: Will this work with both SF and SF-Q models?
A: Yes, this furnace core is compatible with SF-35, SF-35Q, SF-42, and SF-42Q models.

Q: Is this a complete furnace?
A: No, this is the internal furnace core assembly only, not a full furnace unit.

Q: Can I install this myself?
A: Installation is best handled by an experienced RV technician due to gas and electrical components.

Q: What does the furnace core do?
A: The furnace core (heat exchanger assembly) is responsible for generating and transferring heat safely throughout your RV.