Find the right part faster
Multiple models matched. Select your model to confirm fit.

Machine key, special

Key pump drive

Steel key 4.5"

Key; 1/4 in x 1/4 in x 1-1/2 in

Key; 1/4 in x 1/4 in x 1 in

Key 1/4 sq x 2-1/2

Pulley key, 1/4" square X 2" long

Key,blower 1/4 in square x 6.375 in long
Ensure your furnace operates smoothly with genuine furnace square key replacements from Repair Clinic. These small but essential parts are crucial for the proper functioning of various furnace models. Made from high-quality materials, our OEM square keys are durable and designed to withstand the rigors of frequent use. Whether you're a DIY homeowner or a professional technician, you can trust Repair Clinic for reliable parts and fast shipping. For other essential furnace parts, explore our extensive catalog of furnace parts or check out our replacement parts section to find everything you need. In addition, discover related categories like furnace door parts to ensure comprehensive maintenance of your heating system. Trust Repair Clinic to provide the parts and support you need for efficient furnace repairs.
When it comes to replacing your furnace square key, quick service is essential. At Repair Clinic, we offer same-day shipping for all orders placed by 9:00 PM ET, ensuring you receive your genuine OEM parts swiftly. Our extensive inventory includes top brands and high-quality furnace parts, providing peace of mind for both DIY enthusiasts and professional technicians. We are committed to empowering you with the resources needed for efficient repairs. Additionally, explore related HVAC parts and check out our furnace capacitor parts or furnace cap lid cover parts to ensure your heating system is in optimal condition. Trust Repair Clinic for quality, durability, and the convenience of furnace parts online shopping.


Repair Clinic is your trusted source for genuine OEM furnace square key replacements, making it easy for DIYers and professionals to find compatible parts. Enjoy the convenience of ordering online with our user-friendly furnace parts lookup, where you can search by model or part number. Benefit from our No-Hassle 365-Day Returns, allowing you to return uninstalled parts within a year. Plus, our Price Match Guarantee ensures you're getting the best deal on every purchase. With Repair Clinic's extensive repair help section, completing your furnace repairs is straightforward. Explore related categories like ignition switch parts or cap lid cover parts to keep your furnace running smoothly. Trust Repair Clinic to help you save time and money on essential repairs.
Locating the correct model or part number is crucial when searching for furnace square key replacement parts. Typically, the model number is found on an information plate inside the furnace cabinet or on the side panel. For top brands like Carrier, Lennox, or Rheem, these details are essential for ensuring compatibility and performance. If you're struggling to find the correct part, Repair Clinic's Furnace Repair page offers extensive resources to assist. With a focus on genuine OEM parts, Repair Clinic empowers both DIY enthusiasts and professionals to maintain their furnaces efficiently, helping solve common issues like faulty igniters or blower motor failures. Whether you're dealing with a noisy furnace or a blower that runs continuously, accessing the right parts is vital for a successful repair. Enjoy peace of mind and professional support with Repair Clinic's vast inventory and repair expertise.

Need help finding the right furnace parts? Repair Clinic's trained customer care specialists are available 7:00 AM to midnight EST, seven days a week. Whether you have questions about part compatibility or need assistance placing an order, our experts are here to help. The Repair Clinic customer care team is dedicated to ensuring your furnace is back in working order quickly and efficiently.

A furnace that fails to ignite can leave your home in the cold. Common issues include a faulty igniter, malfunctioning flame sensor, or a defective draft inducer fan motor. Replacing furnace filters and cleaning furnace parts can help prevent these problems.

Learn why your furnace isn't working by understanding its ignition sequence and identifying common faulty parts like the igniter, flame sensor, or control board. This article provides practical repair tips and insights into each component's role in the heating process.

A gas furnace that starts and then stops unexpectedly can be frustrating, especially during cold weather. This article explains five common causes, including issues with the flame sensor, pressure switch, control board, draft inducer fan motor, or air flow. Learn how each cause may impact your furnace's operation and get tips to resolve the problem.