Can programmable thermostat be used for radiant systems?
A. Programmable thermostats can be used, but consider this: Radiant systems are designed to maintain a constant temperature. It can take quite a while to warm a room from a cold start and the system is going to use a lot of energy to heat the room. Digital thermostats are more precise than standard mercury-bulb thermostats and may cause the system to cycle too frequently. Mercury-bulb thermostats are generally the best choice for radiant systems.