I live in a Zone 5 area and just built a 100sf polycarbonate greenhouse. An elec. heater blower is being installed, but don't know if the Peco "Nema 4X Raintight" thermostat I bought can create a 15 degree temp differential. Found a few multiple setting greenhouse thermostats online, but they don't appear to be waterproof. Any advice from greenhouse growers in cold climates on this?
Thanks -Anne