A thermostat is part of a control system that senses the temperature and maintains a desired set point.

• The thermostat operates by switching heating and cooling devices on or off.
• Regulates the flow of a heat transfer fluid as often as necessary to maintain the correct temperature.

There are two different types of thermostats, both with their own benefits. There are programmable or smart thermostats:

• Features an automatic setback. This will start and stop the heating or cooling system of your thermostat at least twice in a 24 hour period.
• Smart thermostats allow you to change the temperature in your house wirelessly.
• They can also save you money in the long run.

Mechanical thermostats are the other type of thermostats you can buy. These thermostats are non-programmable, meaning you have to set the temperatures yourself.

• Mechanical times are usually set for 60 minute increments for safe and effective temperature control.
• Temperature control at your finger tips with a simple turn of the mechanical wall timer.

This type of heating system uses a furnace or heat pump to warm the air and releases it through ductwork and vents. Cold air is pulled into the system where it is filtered and heated. The filter gets rid of any allergens and dust that could be brought in with the air. It is the only energy efficient heating system that is able to combine heating and cooling.

• Single Pole – when this thermostat is turned all the way to the left and the temperature fall below that designated temperature, generally around 45 degrees Fahrenheit, the thermostat will turn on the heater. On the back they have two wires.
• Double Pole – has a true off feature that will not turn on the heater when the temperature falls. It has four wires on its back.

• How to Install a Single Pole or Double Pole Thermostat on a 240 Volt Baseboard Heater
• How to Save on Your AC Bill This Summer
• Effective Heating Methods with Stelpro
• HomElectrical's Comprehensive Thermostat Guide