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Thermostat question

JECulver

Member
Joined
Nov 7, 2015
Messages
17
What are the pro's and con's to using an air thermostat vs a in concrete thermostat for radiant heat.
Thanks
 
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PoorUB

Well-known member
Joined
Mar 29, 2021
Messages
11,620
Location
Fargo, ND
Monitoring air temp the space stays a relative constant temperature. Monitoring floor temp and the space temp will swing with the outdoor temp.

For a shop you want to run of space temp. We did some floors that the customers just wanted them "tempered". Typically the floor heat was installed around the outside edge of the building. We would set the floor temp for 70 - 75F and leave it. It was done to keep the floor warm, not heat the space.
 

fitter30

Well-known member
Joined
Jun 23, 2019
Messages
2,960
Location
Peace Valley,mo
In a garage the air and things like tools and machines normally there isn't near the mass of a slab. Slab changes temperature slowly vs air. Slab t stat you get a more even heat. It's looking at the slab not a t stat hanging on the wall.
 
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jasondavidmann

Well-known member
Joined
Aug 16, 2009
Messages
162
Location
Manitoba, Canada
I have the air thermostat in my shop. Only time the floor sensor would be better is when I have the overhead door open a few times in the evening and it is very cold outside. In this circumstance the system will overshoot and will eventually be warmer than desired inside, and the floor will be extra warm too.

I think best case scenario would be to have an air thermostat and a floor sensor than work together and have preset parameters. I haven't looked into this and I am overall happy with my $20 air thermostat.
 
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