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Hydronic Radiant Floor Heating Design Calculator - Borst Engineering & Construction LLC
Hydronic Fluid Mixture (% Propylene Glycol/Water)
Design Outdoor Dry Bulb Temp (Deg F)
Design Indoor Dry Bulb Temp (Deg F) - Zone 1
Allowed Circuit Temp Drop (Deg F, 15 or less recommended) - Zone 1
Heated Area (SF) - Zone 1
Unblocked Heated Area (SF) - Zone 1
Total Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 1
Exposed Floor Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 1
Required Leader Length to Manifold Station (Feet) - Zone 1
Tube Nominal Diameter (Inches, 0.25, 0.375, 0.5, 0.625, 0.75, 1.0) - Zone 1
Tube Type (0=PEX, 1=PEX-AL-PEX) - Zone 1
Floor Assembly Type (0=Slab-on-Grade, 1=Thin-Slab, 2=Above-Floor, 3=Below-Floor) - Zone 1
Floor Surface R-value (Deg F-H-SF/BTU) - Zone 1
Actual Tube Spacing (Inches, 0=Recommended, See Instructions) - Zone 1
Actual Number of Circuits (0=Recommended, See Instructions) - Zone 1
Supplemental Heat Gain (BTU/Day) - Zone 1
Balance Valve Flow Coefficient Setting (See Instructions) - Zone 1
Design Indoor Dry Bulb Temp (Deg F) - Zone 2
Allowed Circuit Temp Drop (Deg F, 15 or less recommended) - Zone 2
Heated Area (SF) - Zone 2
Unblocked Heated Area (SF) - Zone 2
Total Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 2
Exposed Floor Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 2
Required Leader Length to Manifold Station (Feet) - Zone 2
Tube Nominal Diameter (Inches, 0.25, 0.375, 0.5, 0.625, 0.75, 1.0) - Zone 2
Tube Type (0=PEX, 1=PEX-AL-PEX) - Zone 2
Floor Assembly Type (0=Slab-on-Grade, 1=Thin-Slab, 2=Above-Floor, 3=Below-Floor) - Zone 2
Floor Surface R-value (Deg F-H-SF/BTU) - Zone 2
Actual Tube Spacing (Inches, 0=Recommended, See Instructions) - Zone 2
Actual Number of Circuits (0=Recommended, See Instructions) - Zone 2
Supplemental Heat Gain (BTU/Day) - Zone 2
Balance Valve Flow Coefficient Setting (See Instructions) - Zone 2
Design Indoor Dry Bulb Temp (Deg F) - Zone 3
Allowed Circuit Temp Drop (Deg F, 15 or less recommended) - Zone 3
Heated Area (SF) - Zone 3
Unblocked Heated Area (SF) - Zone 3
Total Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 3
Exposed Floor Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 3
Required Leader Length to Manifold Station (Feet) - Zone 3
Tube Nominal Diameter (Inches, 0.25, 0.375, 0.5, 0.625, 0.75, 1.0) - Zone 3
Tube Type (0=PEX, 1=PEX-AL-PEX) - Zone 3
Floor Assembly Type (0=Slab-on-Grade, 1=Thin-Slab, 2=Above-Floor, 3=Below-Floor) - Zone 3
Floor Surface R-value (Deg F-H-SF/BTU) - Zone 3
Actual Tube Spacing (Inches, 0=Recommended, See Instructions) - Zone 3
Actual Number of Circuits (0=Recommended, See Instructions) - Zone 3
Supplemental Heat Gain (BTU/Day) - Zone 3
Balance Valve Flow Coefficient Setting (See Instructions) - Zone 3
Design Indoor Dry Bulb Temp (Deg F) - Zone 4
Allowed Circuit Temp Drop (Deg F, 15 or less recommended) - Zone 4
Heated Area (SF) - Zone 4
Unblocked Heated Area (SF) - Zone 4
Total Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 4
Exposed Floor Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 4
Required Leader Length from Manifold Station (Feet) - Zone 4
Tube Nominal Diameter (Inches, 0.25, 0.375, 0.5, 0.625, 0.75, 1.0) - Zone 4
Tube Type (0=PEX, 1=PEX-AL-PEX) - Zone 4
Floor Assembly Type (0=Slab-on-Grade, 1=Thin-Slab, 2=Above-Floor, 3=Below-Floor) - Zone 4
Floor Surface R-value (Deg F-H-SF/BTU) - Zone 4
Actual Tube Spacing (Inches, 0=Recommended, See Instructions) - Zone 4
Actual Number of Circuits (0=Recommended, See Instructions) - Zone 4
Supplemental Heat Gain (BTU/Day) - Zone 4
Balance Valve Flow Coefficient Setting (See Instructions) - Zone 4
Design Indoor Dry Bulb Temp (Deg F) - Zone 5
Allowed Circuit Temp Drop (Deg F, 15 or less recommended) - Zone 5
Heated Area (SF) - Zone 5
Unblocked Heated Area (SF) - Zone 5
Total Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 5
Exposed Floor Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 5
Required Leader Length to Manifold Station (Feet) - Zone 5
Tube Nominal Diameter (Inches, 0.25, 0.375, 0.5, 0.625, 0.75, 1.0) - Zone 5
Tube Type (0=PEX, 1=PEX-AL-PEX) - Zone 5
Floor Assembly Type (0=Slab-on-Grade, 1=Thin-Slab, 2=Above-Floor, 3=Below-Floor) - Zone 5
Floor Surface R-value (Deg F-H-SF/BTU) - Zone 5
Actual Tube Spacing (Inches, 0=Recommended, See Instructions) - Zone 5
Actual Number of Circuits (0=Recommended, See Instructions) - Zone 5
Supplemental Heat Gain (BTU/Day) - Zone 5
Balance Valve Flow Coefficient Setting (See Instructions) - Zone 5
Design Indoor Dry Bulb Temp (Deg F) - Zone 6
Allowed Circuit Temp Drop (Deg F, 15 or less recommended) - Zone 6
Heated Area (SF) - Zone 6
Unblocked Heated Area (SF) - Zone 6
Total Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 6
Exposed Floor Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 6
Required Leader Length to Manifold Station (Feet) - Zone 6
Tube Nominal Diameter (Inches, 0.25, 0.375, 0.5, 0.625, 0.75, 1.0) - Zone 6
Tube Type (0=PEX, 1=PEX-AL-PEX) - Zone 6
Floor Assembly Type (0=Slab-on-Grade, 1=Thin-Slab, 2=Above-Floor, 3=Below-Floor) - Zone 6
Floor Surface R-value (Deg F-H-SF/BTU) - Zone 6
Actual Tube Spacing (Inches, 0=Recommended, See Instructions) - Zone 6
Actual Number of Circuits (0=Recommended, See Instructions) - Zone 6
Supplemental Heat Gain (BTU/Day) - Zone 6
Balance Valve Flow Coefficient Setting (See Instructions) - Zone 6
Design Indoor Dry Bulb Temp (Deg F) - Zone 7
Allowed Circuit Temp Drop (Deg F, 15 or less recommended) - Zone 7
Heated Area (SF) - Zone 7
Unblocked Heated Area (SF) - Zone 7
Total Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 7
Exposed Floor Heat Loss (BTU/Hour, from Heat Loss Analysis Calculator) - Zone 7
Required Leader Length to Manifold Station (Feet) - Zone 7
Tube Nominal Diameter (Inches, 0.25, 0.375, 0.5, 0.625, 0.75, 1.0) - Zone 7
Tube Type (0=PEX, 1=PEX-AL-PEX) - Zone 7
Floor Assembly Type (0=Slab-on-Grade, 1=Thin-Slab, 2=Above-Floor, 3=Below-Floor) - Zone 7
Floor Surface R-value (Deg F-H-SF/BTU) - Zone 7
Actual Tube Spacing (Inches, 0=Recommended, See Instructions) - Zone 7
Actual Number of Circuits (0=Recommended, See Instructions) - Zone 7
Supplemental Heat Gain (BTU/Day) - Zone 7
Balance Valve Flow Coefficient Setting (See Instructions) - Zone 7
Pump Performance Curve Data Point #1 (Flow Rate in GPM, 0.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #2 (Flow Rate in GPM, 1.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #3 (Flow Rate in GPM, 2.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #4 (Flow Rate in GPM, 3.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #5 (Flow Rate in GPM, 4.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #6 (Flow Rate in GPM, 5.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #7 (Flow Rate in GPM, 6.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #8 (Flow Rate in GPM, 7.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #9 (Flow Rate in GPM, 8.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #10 (Flow Rate in GPM, 9.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #11 (Flow Rate in GPM, 10.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #12 (Flow Rate in GPM, 12.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #13 (Flow Rate in GPM, 14.0 for Grundfos UP15-42F)
Pump Performance Curve Data Point #14 (Flow Rate in GPM, 16.8 for Grundfos UP15-42F)
Pump Performance Curve Data Point #1 (Head in Feet, 14.9 for Grundfos UP15-42F)
Pump Performance Curve Data Point #2 (Head in Feet, 14.4 for Grundfos UP15-42F)
Pump Performance Curve Data Point #3 (Head in Feet, 13.8 for Grundfos UP15-42F)
Pump Performance Curve Data Point #4 (Head in Feet, 13.1 for Grundfos UP15-42F)
Pump Performance Curve Data Point #5 (Head in Feet, 12.6 for Grundfos UP15-42F)
Pump Performance Curve Data Point #6 (Head in Feet, 11.9 for Grundfos UP15-42F)
Pump Performance Curve Data Point #7 (Head in Feet, 11.1 for Grundfos UP15-42F)
Pump Performance Curve Data Point #8 (Head in Feet, 10.4 for Grundfos UP15-42F)
Pump Performance Curve Data Point #9 (Head in Feet, 9.7 for Grundfos UP15-42F)
Pump Performance Curve Data Point #10 (Head in Feet, 8.8 for Grundfos UP15-42F)
Pump Performance Curve Data Point #11 (Head in Feet, 7.9 for Grundfos UP15-42F)
Pump Performance Curve Data Point #12 (Head in Feet, 5.8 for Grundfos UP15-42F)
Pump Performance Curve Data Point #13 (Head in Feet, 3.5 for Grundfos UP15-42F)
Pump Performance Curve Data Point #14 (Head in Feet, 0.0 for Grundfos UP15-42F)
Actual Heat Source Supply Temp (Enter "0" to use Design or enter Actual, Deg F)
Recommended Minimum Floor Insulation R-value (Deg F-H-SF/BTU) - Zone 1
Downward Heat Loss (% of Upward Heat Gain, 10 or less recommended) - Zone 1
Required Floor Temp (Deg F, 85 or less recommended) - Zone 1
Recommended Maximum Tube Spacing (Inches) - Zone 1
Recommended Minimum Number of Circuits - Zone 1
Circuit & Leader Tube Length (Feet) - Zone 1
Total Required Tube Length (Feet) - Zone 1
Circuit Hydronic Fluid Volume (Gallons) - Zone 1
Reynolds Number (2300 or more recommended) - Zone 1
Velocity (FPS, 2 to 4 recommended) - Zone 1
Required Flow Rate (GPM) - Zone 1
Design Flow Rate (GPM) - Zone 1
Actual Pump Flow Rate (GPM) - Zone 1
Required Supply Temp (Deg F) - Zone 1
Required Upward Heat Gain (BTU/Hour) - Zone 1
Actual Upward Heat Gain (BTU/Hour) - Zone 1
Recommended Minimum Floor Insulation R-value (Deg F-H-SF/BTU) - Zone 2
Downward Heat Loss (% of Upward Heat Gain, 10 or less recommended) - Zone 2
Required Floor Temp (Deg F, 85 or less recommended) - Zone 2
Recommended Maximum Tube Spacing (Inches) - Zone 2
Recommended Minimum Number of Circuits - Zone 2
Circuit & Leader Tube Length (Feet) - Zone 2
Total Required Tube Length (Feet) - Zone 2
Circuit Hydronic Fluid Volume (Gallons) - Zone 2
Reynolds Number (2300 or more recommended) - Zone 2
Velocity (FPS, 2 to 4 recommended) - Zone 2
Required Flow Rate (GPM) - Zone 2
Design Flow Rate (GPM) - Zone 2
Actual Pump Flow Rate (GPM) - Zone 2
Required Supply Temp (Deg F) - Zone 2
Required Upward Heat Gain (BTU/Hour) - Zone 2
Actual Upward Heat Gain (BTU/Hour) - Zone 2
Recommended Minimum Floor Insulation R-value (Deg F-H-SF/BTU) - Zone 3
Downward Heat Loss (% of Upward Heat Gain, 10 or less recommended) - Zone 3
Required Floor Temp (Deg F, 85 or less recommended) - Zone 3
Recommended Maximum Tube Spacing (Inches) - Zone 3
Recommended Minimum Number of Circuits - Zone 3
Circuit & Leader Tube Length (Feet) - Zone 3
Total Required Tube Length (Feet) - Zone 3
Circuit Hydronic Fluid Volume (Gallons) - Zone 3
Reynolds Number (2300 or more recommended) - Zone 3
Velocity (FPS, 2 to 4 recommended) - Zone 3
Required Flow Rate (GPM) - Zone 3
Design Flow Rate (GPM) - Zone 3
Actual Pump Flow Rate (GPM) - Zone 3
Required Supply Temp (Deg F) - Zone 3
Required Upward Heat Gain (BTU/Hour) - Zone 3
Actual Upward Heat Gain (BTU/Hour) - Zone 3
Recommended Minimum Floor Insulation R-value (Deg F-H-SF/BTU) - Zone 4
Downward Heat Loss (% of Upward Heat Gain, 10 or less recommended) - Zone 4
Required Floor Temp (Deg F, 85 or less recommended) - Zone 4
Recommended Maximum Tube Spacing (Inches) - Zone 4
Recommended Minimum Number of Circuits - Zone 4
Circuit & Leader Tube Length (Feet) - Zone 4
Total Required Tube Length (Feet) - Zone 4
Circuit Hydronic Fluid Volume (Gallons) - Zone 4
Reynolds Number (2300 or more recommended) - Zone 4
Velocity (FPS, 2 to 4 recommended) - Zone 4
Required Flow Rate (GPM) - Zone 4
Design Flow Rate (GPM) - Zone 4
Actual Pump Flow Rate (GPM) - Zone 4
Required Supply Temp (Deg F) - Zone 4
Required Upward Heat Gain (BTU/Hour) - Zone 4
Actual Upward Heat Gain (BTU/Hour) - Zone 4
Recommended Minimum Floor Insulation R-value (Deg F-H-SF/BTU) - Zone 5
Downward Heat Loss (% of Upward Heat Gain, 10 or less recommended) - Zone 5
Required Floor Temp (Deg F, 85 or less recommended) - Zone 5
Recommended Maximum Tube Spacing (Inches) - Zone 5
Recommended Minimum Number of Circuits - Zone 5
Circuit & Leader Tube Length (Feet) - Zone 5
Total Required Tube Length (Feet) - Zone 5
Circuit Hydronic Fluid Volume (Gallons) - Zone 5
Reynolds Number (2300 or more recommended) - Zone 5
Velocity (FPS, 2 to 4 recommended) - Zone 5
Required Flow Rate (GPM) - Zone 5
Design Flow Rate (GPM) - Zone 5
Actual Pump Flow Rate (GPM) - Zone 5
Required Supply Temp (Deg F) - Zone 5
Required Upward Heat Gain (BTU/Hour) - Zone 5
Actual Upward Heat Gain (BTU/Hour) - Zone 5
Recommended Minimum Floor Insulation R-value (Deg F-H-SF/BTU) - Zone 6
Downward Heat Loss (% of Upward Heat Gain, 10 or less recommended) - Zone 6
Required Floor Temp (Deg F, 85 or less recommended) - Zone 6
Recommended Maximum Tube Spacing (Inches) - Zone 6
Recommended Minimum Number of Circuits - Zone 6
Circuit & Leader Tube Length (Feet) - Zone 6
Total Required Tube Length (Feet) - Zone 6
Circuit Hydronic Fluid Volume (Gallons) - Zone 6
Reynolds Number (2300 or more recommended) - Zone 6
Velocity (FPS, 2 to 4 recommended) - Zone 6
Required Flow Rate (GPM) - Zone 6
Design Flow Rate (GPM) - Zone 6
Actual Pump Flow Rate (GPM) - Zone 6
Required Supply Temp (Deg F) - Zone 6
Required Upward Heat Gain (BTU/Hour) - Zone 6
Actual Upward Heat Gain (BTU/Hour) - Zone 6
Recommended Minimum Floor Insulation R-value (Deg F-H-SF/BTU) - Zone 7
Downward Heat Loss (% of Upward Heat Gain, 10 or less recommended) - Zone 7
Required Floor Temp (Deg F, 85 or less recommended) - Zone 7
Recommended Maximum Tube Spacing (Inches) - Zone 7
Recommended Minimum Number of Circuits - Zone 7
Circuit & Leader Tube Length (Feet) - Zone 7
Total Required Tube Length (Feet) - Zone 7
Circuit Hydronic Fluid Volume (Gallons) - Zone 7
Reynolds Number (2300 or more recommended) - Zone 7
Velocity (FPS, 2 to 4 recommended) - Zone 7
Required Flow Rate (GPM) - Zone 7
Design Flow Rate (GPM) - Zone 7
Actual Pump Flow Rate (GPM) - Zone 7
Required Supply Temp (Deg F) - Zone 7
Required Upward Heat Gain (BTU/Hour) - Zone 7
Actual Upward Heat Gain (BTU/Hour) - Zone 7
Total Design Flow Rate (GPM, used to select pump)
Total Actual Pump Flow Rate (GPM)
Total Design Head Loss (Feet, used to select pump)
Total Actual Pump Head Gain (Feet)
Total Actual Head Gain (% of Max Head, 90 or less recommended)
Total Heat Output (BTU/Hour)
Total Heat Output (BTU/Day)
Total Required Tube Length (Feet)
Total Circuit Hydronic Fluid Volume (Gallons)
Total Circuit Propylene Glycol Volume (Gallons)
Pump Differential Pressure (PSI)
Design Heat Source Supply Temp (Deg F)
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