So I decided to get a copy of the software. Very neat and thorough. Took me a while to get all the stats down for my home.
Anyway I've got a couple of questions on how to properly enter the information into the program.
First, when I went to the design conditions screen, I changed it to the DFW area in Texas and pressed the change button, but it doesn't keep the settings. It keeps reverting back to some city in Iowa. What's going on with that?
Second, after compiling all of the rooms in my home, it seems that the cooling load is about right for what I have now, but the heating load is just off the scale...like 190k btu for a 2800 sq. ft. house. The furnace I have now puts out around 98k btu and does a good job for the whole house. I can only assume this is because of the design conditions not working right.
Third, when you enter the information for the separate rooms in the house, I have entered the square footage for each wall. Now not all walls in every room are exterior walls, so for the interior ones I have a wall of certain square footage entered with no insulation and a hollow wooden door for entry. Does this adversely affect the infiltration for the room as a whole? I mean, does the software take this to mean outside infiltration? I was looking at a couple of rooms where I did this and the heat loss seemed rather high...but again this could be because of the design conditions problem.
Fourth, when I input the square footage for the floor in each room, I always select concrete slab on grade with no edge insulation. This is about as close as I could get to my actual conditions. The foundation is a concrete slab; I have no idea if there is any edge insulation, so I just select no, but the majority of the floor has carpet. How should I go about entering this?