EcoRenovator - View Single Post - Hydronic Floor pump frequency vs water supply temp?

Ryland · 11-15-12, 07:50 AM

where are you getting your info from that you want a lower temp for more efficiency?
You want a lower temp for comfort, a floor that is to hot makes your feet sweat, 140F sounds about right for heating a concrete floor because it will take a while for that floor to soak up the heat from the piping, the thiner the floor the cooler you want the water going in to it to be.
With solar hot water systems I've seen 160 to 170F water going in to a sand bed under the slab and you would turn that system on to start heating up that floor in september or so, but with solar you are going to see those higher temps on almost any sunny day.

11-15-12, 07:50 AM	#3
Ryland Master EcoRenovator Join Date: Mar 2009 Location: Western Wisconsin. Posts: 913 Thanks: 127 Thanked 82 Times in 71 Posts	where are you getting your info from that you want a lower temp for more efficiency? You want a lower temp for comfort, a floor that is to hot makes your feet sweat, 140F sounds about right for heating a concrete floor because it will take a while for that floor to soak up the heat from the piping, the thiner the floor the cooler you want the water going in to it to be. With solar hot water systems I've seen 160 to 170F water going in to a sand bed under the slab and you would turn that system on to start heating up that floor in september or so, but with solar you are going to see those higher temps on almost any sunny day.