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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 136 results
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  • Crown Boiler Company 230515

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

    $61.00
    In Stock

    Or as low as

    (0 Reviews)
  • Friedrich CP24G30B

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

    $843.00 Free Shipping
    In Stock

    Or as low as

    (1 Review)
  • 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

    $22.00
    In Stock
    (0 Reviews)
  • Friedrich KWIKM

    Kühl Medium Chassis Window Mounting Kit

    $29.00
    In Stock
    (0 Reviews)
  • Friedrich KWIKQA

    Kühl Q Chassis Window Mounting Kit

    $29.00
    In Stock
    (0 Reviews)
  • Friedrich KWW

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

    $171.00
    In Stock

    Or as low as

    (0 Reviews)
  • Friedrich USC

    Wall Sleeve for Friedrich Uni-Fit Air Conditioners

    $99.00
    In Stock

    Or as low as

    (0 Reviews)
  • GE RAA83

    Replacement Filter - Regular Mount

    $9.00
    In Stock
    (0 Reviews)
  • HeatStar HS125FAV

    125,000 BTU Portable Forced Air Propane Heater

    $181.00
    In Stock

    Or as low as

    (0 Reviews)
  • Honeywell AQ25582B

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

    $165.00
    In Stock

    Or as low as

    (0 Reviews)
  • Honeywell ARD6TZ

    6" Round Automatic Damper

    $98.00
    In Stock

    Or as low as

    (3 Reviews)
  • Honeywell ARD7

    7" Automatic Round Damper

    $90.00
    In Stock

    Or as low as

    (3 Reviews)
  • Honeywell AT140A1042

    Replacement 40 Vac Zoning Transformer for Honeywell EnviraZone Control Panels

    $20.00
    In Stock
    (0 Reviews)
  • Honeywell C7835A1009

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

    $62.00
    In Stock

    Or as low as

    (0 Reviews)
  • Honeywell CPRD10

    10 in. TrueZONE Bypass Damper

    $87.00
    In Stock

    Or as low as

    (0 Reviews)
  • Honeywell HZ221

    Single-Stage Heat Control Panel, 2 Zone

    $106.00
    In Stock

    Or as low as

    (0 Reviews)
  • Honeywell HZ311

    3 Zone, Single-Stage Heat / Cool TrueZONE Control Panel

    $99.00
    In Stock

    Or as low as

    (2 Reviews)
  • Honeywell HZ322K

    3 Zone, 2-Stage Heat / Cool TrueZONE Control Panel with Discharge Air Sensor and Transformer - Heat Pump Compatible

    $161.00
    In Stock

    Or as low as

    (4 Reviews)
  • Honeywell PV075/U

    3/4 in. NPT connection SuperVent

    $60.00
    In Stock

    Or as low as

    (0 Reviews)
  • Honeywell THX9421R5021WW

    Redesigned Prestige IAQ Thermostat, 4 Stage Heat / 2 Cool, with HD Touchscreen

    $199.00
    In Stock

    Or as low as

    (0 Reviews)
  • Honeywell TK300-30A-2FM

    Standard Boiler Accessory Kit

    $140.00
    In Stock

    Or as low as

    (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

    Or as low as

    (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

    Or as low as

    (0 Reviews)