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Calculators

Use our online tools to anticipate your heating requirements.

Closed Tank Heating
°F
ft
ft
ft2
ft3
gallons
To maintain temp
°F
°F
kW
To raise temp
°F
°F
lbs/gal
hours
%
BTUs
kW
Watt Density
watts
inches
inches
W/in2
Percentage of Wattage
volts
volts
watts
%
watts
secret