The heat here is from the floor, and consists of water running through pipes embedded in the concrete floor you are standing on. This means a couple of things:
- It can take a few hours to feel a difference if you change the thermostat- be patient, the whole concrete slab has to catch up!
- You are likely to be more comfortable at a lower house temperature than at home- the floor being the warmest part will radiate heat upward making you feel more comfortable at 66-72 degrees.
- A big part of the heat in the house comes from passive solar radiation through the windows, so keeping the blinds open in the living room and office during a clear day will make the house nice and toasty, and it will stay that way well into the night.
- On really cold nights, the fireplace can make the living room much more comfortable