CA
3" HIGH LIMIT SWITCH L190-30F 3 High Limit Control Switches
+5% Tax • Shipping calculated at checkout.
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
Ensure the safety and efficiency of your heating system with this premium High Limit Control Switch. Designed as a critical safety mechanism for forced-air furnaces and HVAC units, this thermal limit switch monitors internal air temperatures to prevent overheating. When the system reaches a specified heat threshold, the switch automatically interrupts the circuit to the burner or heating element, protecting your equipment from heat damage and ensuring operational safety. This high-quality replacement part is essential for HVAC repair and routine maintenance, featuring a reliable bimetal sensor that provides accurate temperature detection and a consistent response. It is an ideal solution for restoring proper furnace cycles and preventing system failure due to faulty thermal sensors.
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–9PM PST · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes, the 543-061 is a genuine OEM, or a factory replacement manufacturer approved part. We source all 3 Limit Switches from authorized distributors to ensure exact-fit compatibility. This 3 Limit 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 (543-061) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible 3 Limit Switches for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most 3 Limit Switches including the 543-061 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. 3 Limit Switches orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 543-061 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 3 Limit Switches?
