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Water Radiant Floor and Heat Loss Calculator
Outside Design Temperature
Average winter temperature
Soil Temperature
Heated Building Envelope
Value
Length
Width
Height
BTU hour
BTU sq. ft.
Perimeter Walls - R=19 insulation
Doors & Windows U=.5
Ceiling Area - R=38 insulation
Desired Inside Temperature
Basement Envelope
Value
Length
Width
Height
BTU hour
BTU sq. ft.
Basement Walls - R=4 insulation
Basement Floor - R=5 insulation
Windows Basement U=1.2
Desired Basement Temperature
Garage Envelope
Value
Length
Width
Height
BTU hour
BTU sq. ft.
Garage Walls - R=19 Insulation
Garage Ceiling - R=38 insulation
Garage Floor - R=5
Garage Doors & Windows R=.5
Desired Garage Temperature
BTU Requirements
Daily BTU's Required
Solar Collector BTU (if known)
Number of Solar Thermal Collectors Required
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