Tjernlund Products PS1505 Air Pressure Prover Switch 0.03"-0.07" SPST

The Tjernlund Products PS1505 Fan-Proving Safety Interlock Switch is used inHVAC systems. This is used to make sure that the inducer is working properly by sensing pressure change and allowing burners to fire only when proper ventilation. It is commonly used with furnaces and water heaters, and it improves system safety and performance. It confirms fan operation before heat is applied to prevent backdrafts and incomplete combustion. This durable operation also provides energy efficiency support and system protection that makes it suitable for improving safety standards in residential and light commercial HVAC applications.