How HVAC Thermostats Work


thermostat One of the most overlooked, yet most important components of your HVAC system is the thermostat. This component signals the rest of the system when to turn on and when to turn off, so without it your home would be unable to stay at a consistent temperature. Here's how a good thermostat can help you avoid unnecessary HVAC repair in Kennesaw by keeping your entire system in better condition.


Thermostat's Role

The role of a thermostat is to signal the AC or furnace to run and to determine how long the cycle should run. The running time is based on the current temperature of your home compared to the temperature set on the thermostat. In general, the thermostat will signal the HVAC system to run until it detects the appropriate temperature and then it will signal the system to shut off until it detects a temperature change indicating the need for another cycle.


Thermostat Placement

The thermostat should be placed in an area of the home that's frequently used, but shouldn't be too close to other sources of heat or cold. It should be placed five feet off the floor and at least 18 inches away the outside walls. The thermostat will get the best readings when placed away from windows, vents, and appliances, and where there's a good natural circulation of air.


Types of Thermostats

In the past, thermostats had actual mercury (liquid metal), wires, and thermometers to detect temperature and either heat or cool the home. These thermostats are more complicated than digital thermostats, which are more common now and with most modern HVAC systems. Digital thermostats use a thermistor to measure temperature and determine when the system should run. There are some benefits of digital thermostats you should know about.


Save money Digital Benefits

One of the benefits of a digital thermostat is that it's easier to set the temperature to a specific degree, but what's even more advantageous is that the thermostat can be programmed. You can set the thermostat to different temperature setting throughout the day and week so that it runs less often when the home is unoccupied. This can substantially save you money on utility costs, and it also extends the lifespan of your system since it won't suffer as much wear and tear and require HVAC service in Kennesaw.


Smart Thermostats

Another important innovation in thermostats is the smart thermostat. These thermostats are wi-fi based so that you can control the thermostat settings with a smart phone. These thermostats are not only able to be programmed from any location, but many of them are actually equipped with sensors that detect when the house is unoccupied in case you're unable to reset the thermostat. Some of these smart thermostats can actually "learn" occupancy patterns and create a program that will maximize energy use based on your typical schedule.


Saving Money with Settings

Smart thermostats will save you the most money on energy costs since they typically have the most energy efficient settings. However, you can save money on utility bills without a smart thermostat as well by paying close attention to the settings. Lowering the temperature in the winter or raising it in the summer by just one degree can save you 1% of energy costs; doing the same by ten degrees can save you 10%. The right thermostat setting reduces wear and tear on your system, so contact Shriver Mechanical today to learn more.