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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, Coquitlam
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
This premium 50VA step-down transformer is a vital electrical component for HVAC systems, specifically designed to convert a 120V primary input into a steady 24V secondary output. As a core part of your appliance's control circuit, it provides the necessary low-voltage power to operate thermostats, gas valves, relays, and electronic ignition systems. If your furnace or air handler is failing to start or the control board lacks power, a faulty transformer is often the cause. This durable replacement ensures reliable voltage regulation and consistent performance, helping to restore the efficiency and safety of your heating and cooling 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
The 100-204 is a replacement part. Match your furnace model number on our site to confirm the fit. This electrical-transformers-relay 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 (100-204) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible electrical-transformers-relay for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most electrical-transformers-relay including the 100-204 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. electrical-transformers-relay orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 100-204 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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