I have been trying to get an answer to some questions I have about my heating system. I have a four year old 1800 sq. ft. ranch (ENERGY STAR)home in Manitowoc, WI. Some of the reasons I'm not sure things were installed right:
I have an OA sensor that was installed on the south side of the house where the sun was on it all day. I had it moved to the north side.
There are two pex tubes in each joist space stapled to the sub floor, with no plates. There is 2 inch styrofoam (R-8) screwed to
the bottom of the joists with 3 inch drywall screws and fender washersfor easy removal in case of problems.
There is no difference for carpet, tile or laminate floors.
The sun room (almost all glass would not come up to set temperature so the contractor came back and added some plates around the perimeter and had me install R-19 insulation under the tubes and over the styrofoam.
I saw one of your programs where you put radiant heat under the floor with plates and ran 100 degree water through the system.
I am running 175 degree water when the temp outside is around 40 degrees and about 200 degrees when it is around zero.
Is there something I can do to improve the system efficiency?
Would plates help?
Would more insulation help?
Is it necessary to run those temperatures?