Lochinvar & A.O. Smith 100187858 1.0" Blower Prover Switch

The Lochinvar & A.O. Smith 100187858 1.0” Blower Prover Switch is a safety device that is normally installed in HVAC systems with specific reference to gas-fired boilers and water heaters. This switch controls the operation of the blower, and only allows the system to ignite if the blower is working correctly. By confirming the operation of the blower, it avoids conditions which are hazardous to health, such as accumulation of gases, thus raises safety standards. Also, the switch is built to provide high durability in demanding conditions, which in turn leads to increased equipment durability and lower maintenance expenses.