Indoor air temps with radiant floor heat

[rocklock]

I have a timber frame home (rental) next door with a ICF basement and radiant heating in the basement floor (only).

It takes about 24 hours or more to get this sucker warm (we have loaned electric heaters to some guests). The basement and first floor are very comfortable. The thermostat is on the first floor... The basement floor is warm (toasty). This home is the reason that I put in radiant heat although is is not active yet. No problems on the second floor...

Note, I have no temps... just observations. The house has been there and operational for about 10 years...

[loghousenut]

I can't add much to the theoretical discussion about the relationship between floor temps and air temps. I do think the principles become apparent when you drive a car with heated seats. Sure solves a lot of arguments about who controls the heater knobs.

[panderson03]

this is a very helpful thread! great tip about insulation around RPSL footings!!
and I agree with Mr Nut. seat heaters save marriages....