Wondering How Your HVAC System Works?

Wondering How Your HVAC System Works

Wondering How Your HVAC System Works?

Did you ever wonder how your house stays cool in summer and warm in the winter? Curious about how your HVAC System works? Heating, Ventilating, and Air Conditioning (HVAC) equipment perform heating and cooling for residential, commercial or industrial buildings. HVAC systems are also responsible for providing fresh air. This dilutes interior airborne contaminants such as odors from occupants, volatile organic compounds (VOC’s) emitted from interior furnishings, and chemicals used for cleaning, to name a few. A properly maintained custom designed system will provide a comfortable indoor environment year-round.

Basic HVAC System Mechanics

As to explain it in its simplest form, all climate-control devices or systems have three components:

  • source of warmed or cooled air
  • means of distributing the air to the rooms being heated or cooled
  • a control panel used to regulate the system (e.g., thermostat)

Air Flow and Principles

It is likely that your source of warm air, perhaps a furnace, and cool air, like an air conditioner, use the same distribution and control systems. Meaning, if your house has central air, chilly air most likely flows through the same ducts that heat does, and the same thermostat regulates it. When a heating or cooling system malfunctions, one of these three components is usually the culprit.

The basic operating principles for both heating and air conditioning are very similar. Heat always moves from a warm object to a cooler one, and vice versa. Therefore furnaces and heaters put heat into the air to make your home toasty; air conditioners remove heat to make your home chilly.

Different Energy Sources

All HVAC systems burn fuel. Air conditioners typically use electricity. While most home heating systems use pretty much any type including gas, fuel oil and electricity. However, the heat pump is usually an electrically powered climate control unit used both to heat and cool air. In the summer it extracts heat from the air inside your home Conversely, during the winter it pulls the air from outside and uses this heat to warm the air inside.

How Your Furnace Operates

When you turn on your furnace, it consumes the fuel that powers it. As it burns the fuel, it produces heat, which travels to your living areas ducts, pipes, or wires. The warm air then gets blown out of registers, radiators, or heating panels. If your system is an older one, it may use a boiler to store and heat water. The warm water is then circulated through pipes, which radiate heat.

How Your Air Conditioner Works

Electricity powers your air conditioner to cool a gas in its coils to its liquid state. Warm air is pulled into your home and then cooled by contact with the cooling coils. In turn, the chilly air is vented into your rooms through ductwork and out of registers.

Expert HVAC Knowledge

The best HVAC system is the one about which you do not have to think. We often take it for granted that our house is cool in the summer and warm in the winter. No one wants to discover an HVAC issue in the worst of times. The best way to keep your system in top shape is routine maintenance. MBS Mechanical offers a maintenance strategy that will ensure you are comfortable all year long. Our expert MBS Mechanical technicians have years of experience and know how an HVAC system works. Contact us today to schedule an evaluation.


For both our residential and commercial customers, our commitment to you is the same: "Your Complete Satisfaction". We'll give you an honest appraisal on any installation, repair or upgrade and will provide a fixed-fee cost estimate.  Review our Testimonials to see what others are saying about MBS Mechanical.

cool prices warm service call now MBS Mechanical is a family owned and operated HVAC company, formed in January 2000. Our focus is on giving our customers prompt, reliable, honest and price-competitive service. Our service philosophies are simple; "treat our customers the same way we expect to be treated" and "if it's not broken, don't fix it".