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Thermostat and Furnace Compatibility

By Bob Formisano, About.com

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Furnace and Thermostat Compatibility - Introduction

You Must Match the Thermostat to Your Heating System


Furnace and Thermostat Compatibility
Furnaces and thermostats are not mix and match appliances. There are numerous types of heating systems and thermostat systems and they need to be coordinated for safe and proper operation.

In this tutorial we'll review the three types of thermostat systems used today:

  • Millivoltage
  • Low Voltage
  • Line Voltage

    We will then look at what system is used on what type of heating or cooling system in the home, including these systems:

  • Gas Furnace System
  • Boiler and Oil Fired Systems
  • Electric Heat and Cooling Systems
  • Heat Pump Systems
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