Noritz BWCH003 air thermistor, 843-015
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U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
The Noritz air thermistor is a high-precision temperature sensor designed to monitor ambient conditions for tankless water heater systems and outdoor heating units. This critical component provides real-time thermal data to the appliance control board, allowing for automated adjustments to combustion and freeze protection sequences. By accurately sensing the surrounding air temperature, the thermistor ensures the system operates efficiently and prevents internal components from freezing in cold climates. If your heating system is experiencing performance fluctuations or reporting temperature-related error codes, replacing a faulty air thermistor can restore reliable operation and protect your equipment from environmental damage.
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 843-015 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Thermostats, Outdoor Sensors from authorized distributors to ensure exact-fit compatibility. This Thermostat 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 (843-015) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Thermostats, Outdoor Sensors for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Thermostats, Outdoor Sensors including the 843-015 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. Thermostats, Outdoor Sensors orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 843-015 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.
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