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Digital Thermostats

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 144 results
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  • Honeywell TH9320WF5003

    WiFi 9000 Color Touchscreen, 3 Stage Heat / 2 Stage Cool, Digital Thermostat

    popular
    $ 187.99
    (3 Reviews)
  • Nest Thermostat

    Energy Saving, Learning Thermostat, 2nd Generation, T200477W

    $ 249.99
    (0 Reviews)
  • Honeywell TH8732WF5018

    Lyric Interactive Thermostat With Smart Phone Connectivity, 3 Stage Heat / 2 Stage Cool, Digital Thermostat

    $ 232.99
    (3 Reviews)
  • Honeywell YTHX9421R5101WW

    Redesigned Prestige IAQ Kit, 4 Stage Heat / 2 Cool, w/HD Touchscreen, Equipment Interface Module and Duct Sensors, White

    $ 261.99
    (0 Reviews)
  • ecobee EB-EMS-02

    High Definition Touchscreen, 4 Stage Heat / 2 Stage Cool, Wi-Fi / Internet Enabled Commercial Energy Management System

    $ 415.99
    (0 Reviews)
  • Honeywell TH9320WFV6007

    WiFi 9000 Voice Control Color Touchscreen, 3 Stage Heat / 2 Stage Cool, Digital Thermostat

    $ 260.99
    (3 Reviews)
  • Aprilaire 8444

    Non-Programmable Thermostat - One Stage Heat One Stage Cool

    $ 38.99
    (0 Reviews)
  • Aprilaire 8446

    Non-Programmable Thermostat - Two Stage Heat One Stage Cool, for Heat Pump Applications

    $ 41.99
    (1 Review)
  • Aprilaire 8448

    Universal Non-Programmable Thermostat - Three Stage Heat (w/ Heat Pump) Two Stage Cool

    $ 44.99
    (0 Reviews)
  • Aprilaire 8570

    Universal Programmable Thermostat - Two Stage Heat Two Stage Cool

    $ 131.99
    (0 Reviews)
  • Goodman CTK04AA

    ComfortNET HiDef Communicating Control - Modulating Thermostat (for Goodman ComfortNET Compatible Products)

    $ 513.99
    (0 Reviews)
  • Goodman TSTATG4271GT

    High Definition Touchscreen, 4 Stage Heat / 2 Stage Cool, Digital Thermostat

    $ 152.99
    (2 Reviews)
  • Honeywell AQ1000TN2

    Hydronic Boiler Zoning Thermostat

    $ 59.99
    (0 Reviews)
  • Honeywell T7350A1004

    365 Day Programmable Thermostat with One Stage Heat One Stage Cool Conventional, or Two Stage Heat One Stage Cool Heat Pump

    $ 200.99
    (0 Reviews)
  • Honeywell T7350B1002

    365 Day Programmable Thermostat with Two Stage Heat Two Stage Cool Conventional, or Three Stage Heat Two Stage Cool with Heat Pump

    $ 245.99
    (0 Reviews)
  • Honeywell T7350D1008

    365 Day Programmable Thermostat with Two Stage Heat Three Stage Cool Conventional, or Three Stage Heat Three Stage Cool with Heat Pump

    $ 301.99
    (0 Reviews)
  • Honeywell T7350M1008

    365 Day Programmable Thermostat with One Stage Modulating Heat One Stage Modulating Cool

    $ 335.99
    (0 Reviews)
  • Honeywell T775A2009

    Electronic Remote Controller, 1 SPDT, 1 Sensor Included, 1 Sensor Input

    $ 142.99
    (0 Reviews)
  • Honeywell T775B2016

    Electronic Remote Controller, 2 SPDT, NEMA 4x, 1 sensor included, 1 floating output, 2 sensor inputs

    $ 265.99
    (0 Reviews)
  • Honeywell T775B2024

    Electronic Remote Controller, 4 SPDT, NEMA 4X, 1 sensor included, 2 floating outputs, 2sensor inputs

    $ 333.99
    (0 Reviews)
  • Honeywell T775B2032

    Electronic Remote Controller, 2 SPDT, 1 Floating Output, 1 Sensor Included, 2 Sensor Inputs

    $ 208.99
    (0 Reviews)
  • Honeywell T775B2040

    Electronic Remote Controller, 4 SPDT, 2 floating outputs, 1 sensor included, 2 sensor inputs

    $ 303.99
    (0 Reviews)
  • Honeywell T775L2007

    Electronic Temperature Controller/Sequencer/Reset option, 2 Temp Input, 1 sensor included

    $ 295.99
    (0 Reviews)
  • Honeywell T775M2006

    Electronic Temperature Controller, Modulating, no relay output, 1 sensor included, 2 sensor inputs

    $ 158.99
    (0 Reviews)

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.