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Pickup available at 75 Blue Mountain St #3, Coquitlam
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
This high-quality YORK/ETC high limit control switch is a vital safety component for HVAC systems, specifically designed for use in furnaces and air handling units. Functioning as a thermal fan disc, this switch monitors the internal temperature to protect your heating equipment from overheating. It features an L130 100F rating, meaning it automatically interrupts the electrical circuit when temperatures reach 130°F and restores power once the unit cools to 100°F. Replacing a malfunctioning limit sensor is necessary to ensure the safe operation of your heating system and to prevent potential damage to the heat exchanger. Engineered for precision and reliability, this replacement part helps maintain consistent climate control and system longevity.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–5PM PT · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes. The 120-639 is a genuine York OEM part, sourced from an authorized York parts distributor. This Fan Limit Control is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
The easiest way is to match the part number (120-639) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Fan Limit Controls for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Fan Limit Controls including the 120-639 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Fan Limit Controls orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 120-639 is in stock before visiting.
Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.
The model number is on the rating plate inside the furnace door.
13 more not shown. Check your own model number above.
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