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Heater Selection Program
Welcome
Heat Loss Estimator
Hydronic Heater Selector
Heat Loss Estimator
Enter all pertinent building, door, window, and ventilation information as well as the typical environmental conditions. The system will estimate your heat loss and this value will be used to select adequate products in the Hydronic Heater Selection Utility. Click
Calculate
below when all appropriate information has been entered.
Building Specifications
Building Length
Feet
Inches
Meters
Centimeters
Building Width
Feet
Inches
Meters
Centimeters
Wall Height
Feet
Inches
Meters
Centimeters
Roof Pitch
(Rise:Run)
Single Pitch
Double Pitch
Enter the rise & run of your roof and type of pitch (single or double).
Exterior Wall Type
R12 Wall Insulation
R20 Wall Insulation
Pre-Engineered Metal with no insulation - R2.0
Pre-Engineered Metal with 1" BATT - R4.00
Pre-Engineered Metal with 2" BATT - R8.00
Pre-Engineered Metal with 3" BATT - R12.00
Pre-Engineered Metal with 4" BATT - R16.00
Pre-Engineered Metal with 5" BATT - R20.00
1" thick Cellulose wet spray - R3.30
2" thick Cellulose wet spray - R6.60
3" thick Cellulose wet spray - R9.90
8" Thick Concrete Slab - R0.80
Concrete Block 8" Thick Insulated Core - R5.00
Concrete Block 8" Thick Uninsulated Core - R2.50
Custom R Value...
R
Imperial
Metric
Ceiling Type
R12 Ceiling Insulation
R20 Ceiling Insulation
Pre-Engineered Metal with no insulation - R2.0
Pre-Engineered Metal with 1" BATT - R4.00
Pre-Engineered Metal with 2" BATT - R8.00
Pre-Engineered Metal with 3" BATT - R12.00
Pre-Engineered Metal with 4" BATT - R16.00
Pre-Engineered Metal with 5" BATT - R20.00
Pre-Engineered Metal with 8" BATT - R32.00
1" thick Cellulose wet spray - R3.30
2" thick Cellulose wet spray - R6.60
3" thick Cellulose wet spray - R9.90
Translucent Ceiling Panels - R1.61
Custom R Value...
R
Imperial
Metric
Floor Type
Concrete Slab on Grade (no insulation) - R11.0
8" Thick Concrete above grade - R1.48
8" Thick Concrete below grade - R16.70
Steel - Checker Plate - R2.50
Steel - Open Grid - R2.00
Steel with 1" thick Cellulose wet spray - R3.30
Steel with 2" thick Cellulose wet spray - R6.60
Steel with 3" thick Cellulose wet spray - R9.90
Custom R Value...
R
Imperial
Metric
Doors
Man Doors
# Doors & Type
0
1
2
3
4
5
6
7
Metal with Urethane Core - R15.00
Metal, Mineral Fiber Core - R1.69
Metal, Solid Urethane Foam Core with Thermal Break - R2.56
Metal, Solid Polystyrene Core with Thermal Break - R2.17
Wood with Solid Core (2-1/4" thick)- R3.7
Custom R Value...
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Double Doors
# Doors & Type
0
1
2
3
4
5
6
7
Metal with Urethane Core - R15.00
Metal, Mineral Fiber Core - R1.69
Metal, Solid Urethane Foam Core with Thermal Break - R2.56
Metal, Solid Polystyrene Core with Thermal Break - R2.17
Wood with Solid Core (2-1/4" thick)- R3.7
Custom R Value...
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Overhead Doors
# Doors & Type
0
1
2
3
4
5
6
7
Non-Insulated Roll-Up Steel Door - R0.90
Insulated Roll-Up Steel Door (Polystyrene) - R4.55
Insulated Roll-Up Steel Door (Polyurethane) - R7.35
Custom R Value...
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Windows
Window Type 1
# Windows & Type
0
1
2
3
4
5
6
7
8
9
10
Single Pane (Fixed) - R0.90
Single Pane (Moveable) - R0.90
Double Pane (Fixed) 3/16 air space - R1.60
Double Pane (Moveable) 3/16 air space - R1.60
Double Pane (Fixed) 1/4 air space - R1.70
Double Pane (Moveable) 1/4 air space - R1.70
Double Pane (Fixed) 1/2 air space - R2.00
Double Pane (Moveable) 1/2 air space - R2.00
Triple Pane (Fixed) 1/4 air space - R2.60
Triple Pane (Moveable) 1/4 air space - R2.60
Custom R Value...
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Window Type 2
# Windows & Type
0
1
2
3
4
5
6
7
8
9
10
Single Pane (Fixed) - R0.90
Single Pane (Moveable) - R0.90
Double Pane (Fixed) 3/16 air space - R1.60
Double Pane (Moveable) 3/16 air space - R1.60
Double Pane (Fixed) 1/4 air space - R1.70
Double Pane (Moveable) 1/4 air space - R1.70
Double Pane (Fixed) 1/2 air space - R2.00
Double Pane (Moveable) 1/2 air space - R2.00
Triple Pane (Fixed) 1/4 air space - R2.60
Triple Pane (Moveable) 1/4 air space - R2.60
Custom R Value...
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Ventilation
Louvre Vent
# Vents & Type
0
1
2
3
4
5
Insulated - R2.00
Non-Insulated - R1.70
Custom R Value...
Closed
Open
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Ridge Vent
# Vents & Type
0
1
2
3
4
5
Insulated - R2.00
Non-Insulated - R1.70
Custom R Value...
Closed
Open
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Exhaust Fan
# Fans & Type
0
1
2
3
4
5
Insulated - R2.00
Non-Insulated - R1.70
Custom R Value...
R
Imperial
Metric
Feet
Inches
Meters
Centimeters
Feet
Inches
Meters
Centimeters
Environment
Lowest Expected Outdoor Temperature
°F
°C
Desired Indoor Temperature
°F
°C
Average Wind Speed
mph
km/hr
Building Shielding
None
Light
Moderate
Heavy
Very Heavy
Air Changes /hr
(3) Standard - due to air leakage/infiltration or persons entry and exit of building.
(6) Zone 2
Other
Exhaust Fan Air Delivery
CFM
m³/hr
Calculate
Total Heat Loss: 0
BTU / hr
kW
Calculate Heat Loss