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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-performance HVAC Air Pressure Switch is a critical safety component designed to monitor airflow and pressure differentials within heating and cooling systems. Often referred to as an air proving switch, its primary function is to ensure that the inducer motor or blower is operating at the correct capacity before allowing the ignition process to begin. By detecting pressure changes, it prevents the system from running under unsafe conditions, such as blocked vents or mechanical failures. If your HVAC unit is failing to ignite or throwing a pressure-related error code, replacing a faulty switch is essential for restoring reliable climate control and ensuring energy-efficient operation. Built with a durable diaphragm and precise electrical contacts, this switch provides accurate sensing for both residential and commercial package units.
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
The 100-149 is a replacement part. Match your furnace model number on our site to confirm the fit. 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 (100-149) 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 100-149 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 100-149 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.
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