AMERICA'S HEATING & COOLING STORE™
EST. 2002
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Natural Gas or Propane (LP) Fuel, Water Boilers

BTU CALCULATOR
BTU CALCULATOR

BTU stands for "British Thermal Unit" and measures the heating or cooling capacity of a furnace or air conditioning unit. Enter your homes square footage to see how many BTU's are required to adequately heat or cool it.

Enter the square footage of your home (or room) and press Go.

Square Footage

GO
This calculator is for estimating capacity only, and does not give exact equipment capacities for your home.
Displaying 1-13 of 13 results
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  • Rinnai I060SN

    60,000 BTU, 95% Efficiency, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    Best Seller
    $1,882.58 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai I090SN

    90,000 BTU, 95% Efficiency, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    $2,021.63 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai I120SN

    120,000 BTU, 95% Efficiency, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    $2,170.13 Free Shipping
    In Stock
    (0 Reviews)
  • Rinnai I150SN

    150,000 BTU, 95% Efficiency, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    $2,379.38 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai I060CN

    60,000 BTU, 95% Efficiency, 4.1 GPM, Natural Gas/LP, Wall-Mounted, Condensing Combi Boiler

    $2,311.88 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai I090CN

    90,000 BTU, 95% Efficiency, 4.1 GPM, Natural Gas/LP, Wall-Mounted, Condensing Combi Boiler

    $2,581.88 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai I120CN

    120,000 BTU, 95% Efficiency, 5.1 GPM, Natural Gas/LP, Wall-Mounted, Condensing Combi Boiler

    $2,716.88 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai M060SN

    60,000 BTU, 95% Efficiency, 2.6 GPM, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    $1,912.95 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai M120SN

    120,000 BTU, 95% Efficiency, 4.2 GPM, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    Best Seller
    $2,176.79 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai M160SN

    160,000 BTU, 95% Efficiency, 4.2 GPM, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    Best Seller
    $2,393.24 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai M060CN

    60,000 BTU, 95% Efficiency, 2.6 GPM, Natural Gas/LP, Wall-Mounted, Condensing Gas Boiler

    $2,421.90 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai M090CN

    90,000 BTU, 95% Efficiency, 4.2 GPM, Natural Gas/LP, Wall-Mounted, Condensing Combi Boiler

    $2,444.72 Free Shipping
    Not In Stock
    (0 Reviews)
  • Rinnai M120CN

    120,000 BTU, 95% Efficiency, 4.2 GPM, Natural Gas/LP, Wall-Mounted, Condensing Combi Boiler

    $2,512.58 Free Shipping
    Not In Stock
    (0 Reviews)