1-778-759-9864
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BCFurnace
SPDT VENT DAMPER DOOR SWITCH FOR G20 125/250VAC Metal Venting furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

SPDT VENT DAMPER DOOR SWITCH FOR G20 125/250VAC Metal Venting

BCFURNACE

638-066

$39.00

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

Name

SPDT VENT DAMPER DOOR SWITCH FOR G20 125/250VAC

6units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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Fast Delivery
Local Pickup

Product Details

Description

This SPDT Vent Damper Door Switch is an essential safety and operational component for residential and commercial gas heating systems. Functioning as a Single Pole Double Throw (SPDT) mechanism, this switch ensures that the appliance's vent damper is correctly positioned before allowing the heating cycle to proceed. It plays a critical role in preventing the ignition of the furnace or boiler if exhaust gases cannot be safely vented, protecting your home or building from carbon monoxide backup. Designed to handle 125/250VAC electrical loads, this durable metal venting switch is a common replacement part for gas furnaces and HVAC units experiencing ignition failure or intermittent operation. Its reliable contact action provides accurate signaling to the control board, ensuring efficient and safe appliance performance.

Specifications

Type
HVAC Electrical Switch / Venting Component
Size
Small
Application
Used in gas furnaces, boilers, and heating appliances equipped with automatic vent damper assemblies to monitor door position and ensure proper exhaust flow.
Specifications
Single Pole Double Throw (SPDT) configuration, rated for 125/250VAC, compatible with metal venting systems.

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Frequently Asked Questions

Is the 638-066 a genuine OEM part?
Yes, the 638-066 is a genuine OEM replacement part manufactured by BCFurnace. We source all Metal Venting from authorized distributors to ensure exact-fit compatibility. This Metal Venting is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
How do I know if the 638-066 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (638-066) with your furnace model number. Visit the BCFurnace page on our site and enter your model number in the search bar — our system will show all compatible Metal Venting for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
How fast can I get the 638-066 shipped?
Most Metal Venting including the 638-066 ship within 1–2 business days from our warehouse. We ship across Canada and the United States with tracking on every order. For urgent BCFurnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Can I pick up the 638-066 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Metal Venting orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 638-066 is in stock before visiting.

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