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No matter what part of the world you live in you will experience days that are a little too warm or too cold from time to time. A properly functioning HVAC system can ensure that you are always at a comfortable temperature. Whether you are looking for AC installation or heater installation Vista CA, you may be wondering exactly how HVAC systems work.

HVAC Parts

Although there are a few different types of HVAC systems, they will most commonly use the following parts to heat or cool your home:

  • Furnace
  • Air Conditioner
  • Ductwork
  • Thermostat

The thermostat is the brain of the system and will send a signal to either the furnace or the air conditioner to push warm or cool air through the ductwork that runs throughout your home and then out through vents. Thermostats can detect the temperature in your home and can accurately keep your home at a set temperature. Modern thermostats can even work within a smart home system to create a custom heating and cooling cycle based on your schedule and needs to save you money. 


When the temperature drops below the set temperature the thermostat will send a signal to the furnace to produce warm air to heat the home. A furnace will typically use natural gas to fuel flames which will heat the air and then be pushed by a fan through the ductwork and out the vents to provide warm air. Furnaces are often found inside the house in a basement, attic, or otherwise designated space.


When temperatures get too hot the air conditioner will kick in and use electricity and a fan system to pull hot air out of the home and then uses a coolant liquid to push cool air back into the home through the same ductwork and vents. Air conditioner units are typically found outside the home.

HVAC systems don’t have to be overly complex to provide your home with comfortable air. Understanding how your HVAC system works can be a good starting point for using it efficiently.