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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 1-24 of 117 results
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  • Crown Boiler Company 230515

    80/125mm 39" Straight, Cuttable Concentric Vent Pipe

    $61.00
    In Stock
    (0 Reviews)
  • Friedrich CP24G30B

    23,500 BTU (1.96 Ton) Chill Series Cooling Only, 230/208 Volts, Room Air Conditioner

    $1,029.00 Free Shipping
    Pre-order
    (1 Review)
  • Friedrich KEM18A34A

    17,500 BTU Cooling, 13,000 BTU Heating, Kuhl+ Series 230/208 Volts, Room Air Conditioner With 4kW Electric Heat Strip

    $1,337.00 Free Shipping
    In Stock
    (3 Reviews)
  • Friedrich KWCFMA

    Friedrich Kuhl Premium Carbon Filters for SM, EM and YM Models

    $14.00
    In Stock
    (0 Reviews)
  • Friedrich KWCFQ

    Friedrich Kuhl Premium Carbon Filters for SQ and EQ models 3- Pack

    $21.00
    Pre-order
    (0 Reviews)
  • Friedrich KWIFI

    Friedrich Wi-FI Kit for all Kuhl/Kuhl+ N Series Models

    $41.00
    In Stock
    (1 Review)
  • Friedrich KWIKMB

    Kühl Medium Chassis Window Mounting Kit

    $36.00
    In Stock
    (0 Reviews)
  • Friedrich KWW

    Friedrich Wireless Wall Thermostat for all Kuhl except SQ & EQ models

    $199.00
    In Stock
    (0 Reviews)
  • Friedrich UET10A33A

    10,000 BTU Cooling 11,200 BTU Heating, Uni-Fit Series 230/208 Volt, Through the Wall Air Conditioner with 3.5 kW Heat Strip, Wi-Fi Capable

    $847.00 Free Shipping
    In Stock
    (0 Reviews)
  • Friedrich USC

    Wall Sleeve for Friedrich Uni-Fit Air Conditioners

    $124.00
    In Stock
    (0 Reviews)
  • Friedrich WSE

    Sleeve for Wallmaster Series Through The Wall Air Conditioners

    $121.00
    In Stock
    (0 Reviews)
  • GE RAA83

    Replacement Filter - Regular Mount

    $13.00
    In Stock
    (0 Reviews)
  • HeatStar HS125FAV

    125,000 BTU Portable Forced Air Propane Heater

    $181.00
    In Stock
    (0 Reviews)
  • Honeywell AQ25582B

    8 Zone Expansion Panel for Pumps or Zone Valves WITHOUT End Switches

    $165.00
    In Stock
    (0 Reviews)
  • Honeywell ARD7

    7" Automatic Round Damper

    $90.00
    In Stock
    (3 Reviews)
  • Honeywell C7835A1009

    Replacement EnviraCOM Discharge Air Temperature Sensor for Honeywell EnviraZone Networked Zoning System

    $62.00
    In Stock
    (0 Reviews)
  • Honeywell TK300-30A-2FM

    Standard Boiler Accessory Kit

    $140.00
    In Stock
    (0 Reviews)
  • Honeywell V8043B1027

    24 Volts, 3.5 GPM at 60°F, 3/4" Sweat Connection, Normally Open, Hydronic Zone Valve

    $75.00
    In Stock
    (0 Reviews)
  • Honeywell V8043F1036

    24 Volts, 3.5 GPM at 60°F, 3/4" Sweat Connection, Normally Closed, Hydronic Zone Valve With End Switch (Terminal Block Connection)

    $71.00
    In Stock
    (0 Reviews)
  • Honeywell YTH6320R1023

    Programmable Wireless Zoning Adapter Kit with Wireless FocusPRO 6000 and Wireless Adapter

    $142.00
    In Stock
    (2 Reviews)
  • Honeywell ZD12X6

    12" x 6" Side Mount Automatic Zone Control Damper

    $117.00
    In Stock
    (2 Reviews)
  • Rinnai M090SN

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

    $2,407.60 Free Shipping
    In Stock
    (0 Reviews)
  • SpacePak AC-KCWE

    (5 Pack) Kwik Connect 90 Degree Wall Elbows

    $99.99
    In Stock
    (1 Review)
  • SpacePak AC-SM9-C

    SpacePak Round Plenum Coupler (6-Pack)

    $69.00
    In Stock
    (0 Reviews)