Our DIY Cold Plunge/Hot Tub
Calculator Instructions
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Wood-Fired Hot Tub Calculator - Borst Engineering & Construction LLC
Initial Water Temp (Deg. F)
Final Water Temp (Deg. F)
Water Volume (Gallons)
Heater Power (BTU/Hour)
Heater Efficiency (%)
BTU Value of Wood (BTU/Lb, 6880 for Douglas Fir with 20% moisture content)
Electricity Cost (Dollars per Kwh)
Heating Time (Hours & Minutes)
Heating Rate (Deg. F per Hour)
Heating Energy Required (Kwh)
Wood Required (Pounds)
Electricity Cost Saved (Dollars)
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