This HVAC safety switch is the primary defense against heat exchanger failure

This industrial pH sensor replacement is built to maintain signal stability in high-temperature environments

this relay is built to handle significant inductive and resistive loads commonly found in commercial and residential air handlers and furnaces

The electrical configuration handles significant inductive loads

the 18C-522-5-125 is specifically designed for commercial hot water heaters and storage tanks

Supco SFC300400 Switch 340793-762 This HVAC safety switch isThe Supco SFC300400 is an encapsulated, non adjustable fan cycling pressure switch designed for heavy duty service in refrigeration and air conditioning systems. Engineered for R410A application, this SPST (Single Pole Single Throw) control features a close on pressure rise logic, making it a critical component for managing condenser head pressure in low ambient conditions. With a precise 400 PSI cut in and 300 PSI cut out rating, it ensures