Is it best to, and necessary for maximum energy savings, to use a programmable thermostat for radiant floor heat? I just installed a radiant floor system in my cabin, installing in the crawl space, and have a standard thermostat for adjusting the heat. Should I be turning down the thermostat setting in the evenings and turning up each morning to conserve energy (the energy source comes from propane)? If so, the problem is that the radiant floors take so long to heat up that the cabin is not up to temperature for 2-4 hours, after resetting, therefore wouldn't a programmable thermostat would work much better? My hvac guy, who did the install, told me that it was best to just keep the temperature constant and not move it up and down each day/night, but I have been going through much more propane than I had hoped to use in just the first 3 weeks of operation with that method.
If anyone can help, please let me know.