A Lennox 47K18 Flame Rollout Switch/Thermostat interrupts the circuit when heat reaches unsafe levels to guard internal components in the system.
The flame rollout switch/thermostat monitors for unsafe flame rollout conditions and opens the circuit when temperatures reach its 400F threshold, shutting down the heating and cooling unit to protect critical components. Its manual reset design matters because it requires inspection before restarting, which supports safer operation and more reliable performance within the HVAC system.
The flame rollout switch/thermostat may be nearing replacement if the heating and cooling equipment shuts down unexpectedly, will not reset properly or experiences repeated safety trips that can interrupt normal operation. Physical signs can include heat damage, corrosion, discoloration or weakened terminals and environmental signs may include exposure to excessive burner heat, debris buildup or moisture that could affect consistent performance.
Yes! We offer same-day shipping on in-stock real OEM HVAC replacement parts Monday—Friday until 9 PM ET, as well as on Saturday until 4 PM ET for online air orders. Our approach to fulfillment prioritizes speed and reliability across every order. Definitely! See updates on your real OEM heating and cooling parts by heading to our Track My Order page and submitting your order number or purchase order (PO) number with your zip code. With 24/7 access to updates on your shipment, you'll always have the latest details right at your fingertips. We provide several ways to get assistance with your real OEM heating and cooling replacement parts 8 AM to 9 PM ET Monday—Friday with chat, email and phone among the options. Go to our Contact Us page and get in touch with us if you're experiencing any issues. Absolutely! Customers are able to return most new, unopened real OEM HVAC replacement parts within 90 days of delivery, so head to our Returns page to see if your order qualifies. Return eligibility may differ for custom orders.Read More FAQs
Does the Lennox 47K18 Flame Rollout Switch/Thermostat qualify for same-day shipping?
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Is the Lennox 47K18 Flame Rollout Switch/Thermostat returnable?