Profile: Regin Hvac Products Inc. offers a range product for heating, air conditioning and special effects. We also manufacture smoke products, air flow meter, gas Leak detectors, heating & a/c valves, humidistats duct, & wall test instruments as well as humidity transmitters. Our gas Leak detectors detects leaks instantly in piping & equipment containing all types of refrigerants, ammonia, natural gas, propane, compressed air and most other gases. Our new Regin passive color metric carbon monoxide detector is a convenient, nonpowered, carbon monoxide detector affords a simple and nonpowered alternative for detection of the odorless & invisible poisonous gas.