<VV> Re: Garage Heating

[JVHRoberts at aol.com]

There are hydronic heat pumps out there, both ground and air sourced, that  
can deliver hot water to a slab loop. 
Geothermal is neat, but it's losing ground to the newer air sourced heat  
pumps. Given the SUBSTANTIAL difference in installed cost, in many places, a  
geothermal unit will NEVER pay itself off in anything resembling a reasonable  
period of time. 
 
 
In a message dated 10/24/2005 1:12:29 P.M. Eastern Standard Time,  
lechevrier at earthlink.net writes:

3)   radiant concrete slab heating -- has anyone ever used a  ground 
source heat pump (working backwards) to directly heat a slab (and  cool 
the out of doors)? I used to live where they had natural hot water  
heating (geothermal) available, and saw many copper pipe hot water  
heated concrete driveways (to melt the snow & ice) torn up for system  
repair -- I understand that there is now a plastic tubing made for this  
service that is far less troublesome.