RHEEM / RUUD PRESSURE SWITCH 0.55" WC Air Pressure Switch, Air Proving
+5% Tax • Shipping calculated at checkout.
U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Not sure this fits your furnace? Call us — we're happy to help
This premium Rheem / Ruud compatible air pressure switch is a critical safety component designed for residential gas furnaces and HVAC systems. Often referred to as an air proving switch, its primary function is to monitor the pressure differential created by the draft inducer motor. By ensuring that exhaust gases are being properly vented out of the heat exchanger, it allows the ignition sequence to proceed safely. This switch features a precise 0.55" WC (Water Column) set point, making it an essential replacement part for heating systems experiencing ignition failure, venting issues, or pressure switch lockout codes. Durable and reliable, this sensor helps maintain the efficiency and safety of your home heating equipment by preventing operation under hazardous venting conditions.
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 773-202 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 (773-202) 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 773-202 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 773-202 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.
Looking for more Air Pressure Switches?
