Master Flow Replacement Humidistat/Thermostat Control for Power Attic Vents

Installed on two new Master Flow attic fans in my home. Replaced the original units that only used temperature settings. This meets the requirements of the shingle manufacture (GAF) in order to meet the 40 yr. product warranty minimum requirements. The units are very sensitive and accurate in reading actual Temp and Humidity levels. There are many units on the market that say they meet these requirements, however the vast majority of them are useless pieces of hardware that have zero repeatability and zero reliability. Ask me how I know? The previous units performed horribly over the years which in turn led to premature shingle degradation and thus required a complete roof replacement. Not a cheap life experience. Take Note: These need to be mounted wherein they are not in direct flow of air moving out of attic roof or gable vents. These are mounted above the air flow / above the exhaust fans, where they are reading actual temp and humidity levels unaffected by air flow dynamics.

We had installed two Master-Pro attic fans about five years ago. These came with thermostatic control, which helped keep our attic's temperature reasonable.temperature controls were neglecting this important need. After losing two out of the 3 fans I had installed due to corrosion, I replaced them as well as buying these combined controls with the hope of extending their lives and reducing the humidity levels in the attic. SupplyHouse offered these controls at significantly lower prices and provided additional compensation when their delivery experienced delays. I have installed these new controls and they are working flawlessly. All my purchase experiences from SupplyHouse have been outstanding!