PDF file generating...

What Is an HVAC System? Let’s Learn How It Works & What It’s Made of

The HVAC system keeps the air moving between the outside and inside of your home, but you may be wondering what is HVAC system made of and how it works? Let’s find out.

HVAC stands for heating, ventilation, and air conditioning. The system can provide both heating and cooling to residential and commercial buildings. With the increased popularity of such systems, more people want to learn about how does HVAC systems work.

Indeed, understanding HVAC systems can be helpful, especially if you're planning to buy one. As experts in furnace and AC service, we know all about that.

What Are The Components Of A HVAC System?

A commercial HVAC system consists of several components that work together to ensure exceptional system performance. If any HVAC components break down, the whole system will eventually stop working. Here are some essential parts of an HVAC system:


First in line is the thermostat that directs the HVAC to perform certain functions. It can be manually adjusted to stabilize the temperature of a home or building that affects the quality and humidity level of the air.

Evaporator and Condenser Coil

An evaporator coil is a crucial HVAC component that absorbs heat from hot indoor air and cools it down by the refrigerant. This cool air is distributed in the rooms through air conditioning. The conversion process of liquid refrigerants into gas or vapor is vital for the heat exchange process.

A condenser coil is similar to an evaporator coil but serves the opposite function. Instead of absorbing heat, a condenser releases hot air outdoors.

Blower Motor

Finally, a blower motor moves cool or hot air throughout the ductwork of a commercial or residential HVAC system. The equipment uses electrical intake to power the motor.

Learn about Different Types of HVAC Systems

With increased demand, more and more companies are starting to offer premium models of HVAC systems in a range of sizes. Learning about the different types of HVAC systems should make it easier for you to understand how an HVAC system works.

You can choose an HVAC system that best fit your requirements:

Split AC Systems

These are the best-known and classic types of HVAC units. The components of a split model are placed both inside and outside a building. Such systems save more energy efficiency and offer lesser operating costs.

Electric Furnace

This type of HVAC unit is ideal for people living in places with extended warm weather. An electric furnace for heating and an electric cooling system are a much more environmentally friendly combo than a HVAC system powered by gas or oil.

Mini Split Heat Pump

This type of HVAC system has recently become more eminent for several reasons. It is a highly accessible, energy-efficient, and easy-to-use unit. These systems do not require any massive ductwork, making them an ideal option for residential buildings. 

Geothermal Heat Pump

Such HVAC systems can create heat from underground sources like water and soil. With underground piping, the system gathers heat or cools the water before pumping it to the home to maintain the desired temperature. 

Now, onto: "how does the HVAC system work?"

How Does An HVAC Work Anyway?

Three elements determine how an HVAC system works:

  • An air conditioning unit and a compressor installed outside the building
  • A source of air distribution, usually through ducts or pipes
  • A central control unit, also known as a thermostat that regulates the system

An HVAC system can route warm and cool air through the same ducts. The heating and cooling process is based on the HVAC system working principle that heat transfers from a warmer object to a cooler one.

HVAC is a climate control unit that pumps both hot and cold air. In cooler weather, the system allows the furnace to distribute hot air, while during hot seasons a refrigerant gas circulates cool air through the ducts.

Hopefully, this answers your question: "how does HVAC work?”

Get a Brand New HVAC System Installed by the Smart Air Team

Smart Air Cooling and Heating works with proficient and licensed technicians to offer exceptional HVAC services.

Are you having any issues with your HVAC unit? Contact us, choose your preferred option, and enjoy the most efficient HVAC service.

We offer services in and around all major Austin areas:

  • Westlake
  • Rolling Wood
  • Dripping Springs
  • Buda

Call us now.