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Furnace Switch Parts

Browse Furnace Switch parts. Quality replacement parts with fast shipping.

Products (5 items)

  • 87F16 Furnace Primary Limit Switch up to 140°F

    Price: $25.74

    Availability: In Stock

    The 87F16 Furnace Primary Limit Switch is a crucial safety component designed to prevent overheating by shutting off the furnace when temperatures reach up to 140°F. Ideal for maintaining safe and efficient furnace operation, this switch ensures your heating system runs smoothly and securely.

  • 33082 Sail Switch with Bracket Kit

    Part Number: 33082

    Price: $17.55

    Availability: In Stock

    Upgrade your RV furnace with the BlueStars 2 Packs 33082 Sail Switch with Bracket. Designed for compatibility with Dometic Atwood RV furnaces, this high-quality sail switch ensures optimal performance and reliability. The kit includes a sail switch and bracket for easy installation, making it a perfect replacement for your furnace maintenance needs.

  • L210-20F Furnace Primary Limit Switch -40°F to 180°F

    Price: $22.23

    Availability: In Stock

    Discover the L210-20F Furnace Primary Limit Switch, designed to ensure optimal safety and performance in your heating system. Operating efficiently between -40°F and 180°F, this switch is essential for maintaining proper furnace function and preventing overheating. Ideal for residential and commercial use, it guarantees peace of mind and reliable temperature control.

  • 20162904 Furnace Primary Limit Switch 150°F to 110°F

    Price: $26.91

    Availability: In Stock

    Discover the 20162904 Furnace Primary Limit Switch, designed to enhance your heating system's safety and efficiency. This reliable switch operates between 150°F and 110°F, ensuring optimal temperature control and preventing overheating. Ideal for maintaining a comfortable and secure home environment.

  • Sail Switch 33082

    Price: $17.55

    Availability: Out of Stock

    2 Packs 33082 Sail Switch with Bracket is designed for compatibility with Dometic Atwood RV furnaces. This reliable sail switch kit includes a mounting bracket and is ideal for ensuring optimal performance of your RV heating system. Perfect for maintenance or replacement, it offers a straightforward installation process for enhanced convenience.

Furnace Switch Parts for Safe and Reliable System Protection

If your furnace shuts off unexpectedly, struggles with airflow, or fails to maintain stable heating, a faulty furnace switch may be the source of the problem. Furnace switches - including sail switches and limit switches - play a critical role in monitoring temperature, airflow, and overall system safety. When these switches fail, the furnace will shut down to prevent overheating or unsafe operation.
A failing furnace switch often leads to symptoms such as:
  • Furnace shuts off soon after starting
  • Weak or restricted airflow during operation
  • Burner fails to stay lit due to airflow detection issues
These issues indicate the switch is no longer accurately sensing airflow or temperature conditions. Replacing damaged or worn switches is one of the fastest ways to restore safe and stable furnace performance.

Popular Furnace Switch Options

This collection includes high-quality sail switches and limit switches used across many common furnace models:

Explore a Full Range of Furnace Replacement Parts

AZParts provides a complete selection of furnace parts to support every stage of heating system repair. From ignition control to airflow monitoring, our components are designed to keep your furnace operating safely and efficiently.

Furnace Troubleshooting Guides & Expert Tips

For deeper furnace diagnostics and repair knowledge, explore our detailed articles. These guides help you identify airflow issues, safety shutdown causes, and symptoms commonly linked to faulty furnace switches.

Why Buy Furnace Parts from AZParts?

Customers trust AZParts for fast, dependable furnace repairs because we offer:
  • Wide Compatibility: Furnace circuit boards that match top brands and models, ensuring correct system performance.
  • High-Quality OEM & Aftermarket Options: All components are tested for reliability and durability.
  • Fast Shipping from U.S. Warehouses: Get your heating system back up and running without long delays.
  • Detailed Product Listings: Clear specifications and model matching to reduce ordering mistakes.
  • Affordable Prices & Multi-Pack Options: Cost-effective solutions for homeowners and HVAC technicians.
  • Helpful Support: Need help identifying the correct control board? Our team is ready to assist.