New to Alaska (North Pole / Fairbanks area) and have some questions on heating.  House is ~2300 square feet, radiant heating supported by a heating fuel burning boiler.  

The house has five thermostats.  The previous owner had all of them programmed to constantly change temperature (night - wake up period - gone at work - at home period - night cycle).  They would swing from 60-68  degrees throughout the day.  My realtor told me the most efficient way to use this type of heating system is to just leave it at a constant temperature.  

What do you all think?

Constant temp is easier for the system to maintain, especially when it gets colder, getting it to crank up 10 degrees in -40 weather just for waking up seems silly

Radiant heat takes about 12 hour to react to temp changes over five degrees. Leave the temp alone and you will be fine.