LENNOX PRESSURE SWITCH -0.10" WC Air Pressure Switch, Air Proving
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Not sure this fits your furnace? Call us — we're happy to help
Ensure the safe and efficient operation of your heating system with this high-quality Lennox Air Pressure Switch. Specifically calibrated for a -0.10" WC (Water Column) set point, this air proving switch serves as a critical safety mechanism by monitoring the airflow and negative pressure within your furnace or package unit's combustion chamber. It is designed to prevent the ignition cycle from proceeding if the inducer motor is not venting properly or if there is a blockage in the flue, protecting your property from potential exhaust hazards. If your HVAC system is experiencing ignition failure, error codes related to pressure, or short-cycling, this replacement differential pressure switch is a common solution for restoring reliable performance. Built for durability and precision, it is an essential component for maintaining the air proving requirements of residential and commercial forced-air heating equipment.
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 773-153 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Air Pressure Switches from authorized distributors to ensure exact-fit compatibility. This Air Pressure Switch 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 (773-153) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Air Pressure Switches for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Air Pressure Switches including the 773-153 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. Air Pressure Switches orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 773-153 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.
Many more not shown. Check your own model number above.
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