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How a Basic HVAC System Works

How a Basic HVAC System Works

How a Basic HVAC System Works

You probably already know that HVAC stands for Heating, Ventilating, and Air Conditioning. But do you really know how an HVAC system works? The primary function of the HVAC system in your home is to provide temperature control and produce acceptable indoor air quality (by controlling humidity and filtering the air). In Houston, people rely on their HVAC system to keep them cool in hot summer months. But do you know how the system works? Click To Tweet

Understanding Your HVAC System

Understanding the basic functions of an HVAC system and how it works is important to maintaining your current system in good condition. Whether you’re troubleshooting a problem or wondering if you need the help of a trained HVAC technician, understanding the basics helps.

  1. Thermostat
  2. Furnace
  3. Evaporator Coil
  4. Condensing Unit
  5. Vents
  6. Refrigerant
  7. Filters

1) Thermostat

Usually installed on a prominent location on an interior wall, the thermostat can be set manually or programmed to keep your home at your ideal temperature. When the temperature inside gets too hot or cold, the thermostat triggers your HVAC system to start circulating air as needed.

2) Furnace

Your furnace is usually the biggest component of your system, requiring a designated closet or space in your garage or basement. All furnaces consist of four main components: 1) burners that deliver and burn fuel, 2) heat exchangers, 3) a blower and 4) a flue that acts as an exhaust for gaseous by-products.

3) Evaporator Coil

The evaporator coil is used to cool down the air when your thermostat is set to a lower temperature. This cold air is then funneled throughout your home.

4) Condensing Unit

This large unit is found on the outside of your home and filled with what is called refrigerant gas. When the refrigerant is cooled, the condensing unit pumps this liquid to the evaporator coil to be transformed into gas again.

5) Vents

These are the outlets that help distribute heated and cooled air from the duct system into the various rooms of your home. They’re generally found near the ceiling with angle slats, designed to send the air downward.

6) Refrigerant

These lines carry refrigerant to the condensing unit in the form of gas. This gas is transformed to liquid form, then transferred back to the evaporator coil.

7) Filters

These lines carry refrigerant to the condensing unit in the form of gas. This gas is transformed to liquid form, then transferred back to the evaporator coil.

Trust an Expert

These are the basic components of your HVAC system, but if you’re experiencing an issue with your heating or cooling, it’s best to call an expert. DIY repair can be costly and dangerous.

Interested in becoming an HVAC tech? Contact Us to learn more or to sign up for classes.

The Homeowner’s HVAC Tune Up Checklist

The Homeowner’s HVAC Tune Up Checklist

An HVAC tune-up can save you money by identifying inefficient energy usage, can reduce the risk of carbon monoxide poisoning on gas heating systems, and can also eliminate neglected problems leading to system failures.  To ensure that your heating and cooling system is running at peak efficiency, you should have it checked out by a professional once or twice a year. There are many preventative measures you can take to extend the life of your HVAC system. Click To Tweet

HVAC Tune-Up Checklist

Most homeowners aren’t experienced or equipped enough to complete an HVAC tune-up without professional help. However, there are certain checks and preventive measures that every homeowner can do to prevent damage to your HVAC system.

Keep It Clean

Make sure that your AC unit if clear of any debris or lawn growth that could damage it or cause an electrical short. The AC condenser should not be covered up, even though you may not love the way it looks! It needs plenty of fresh air to pump into your home.

Off the Ground

Ideally, your outdoor AC condenser unit should be off the ground, protecting it from potential flood damage or animal activity. If it’s not, you may need a professional to mount a wall bracket or concrete lift.

Change Air Filters

Changing your home’s air filters is essential to your air conditioner’s efficiency. Forgetting to change your air filters can damage your HVAC equipment and cause costly problems. Typical filters should be changed every 30-90 days.

The Professional Advantage

Your HVAC system is a complex network that needs a professional for nearly all repairs. Never attempt to repair your unit or ductwork armed only with a YouTube tutorial video. The risk of injury from electric shock, fall or hardware misuse is high if you lack the experience and training of an HVAC technician.

Contact Us to learn more about hiring a skilled HVAC technician, or becoming one yourself!