You may hear a loud humming

Can I use this sensor on a standing pilot furnace

this unit ensures perfect fitment and electrical compatibility

optimizing the refrigerant flow for consistent cooling performance

Precise Fit: Standard 1 inch NPT connections allow for seamless integration with existing McDonnell & Miller water columns

Lochinvar & A.O. Smith 100278092 Switch R-407C You may hear a loudThe Lochinvar & A. O. Smith 100278092 Switch is a critical safety and operational component designed for high performance commercial boilers and water heaters. As a factory authorized OEM flow switch, this assembly ensures the burner circuit only energizes when adequate water velocity is detected, protecting the heat exchanger from dry fire conditions and thermal stress. The unit comes integrated with a durable brass tee specifically sized for CC120