Air Handlers Explained by HVAC Technician

Yarbrough & Sons Homeowner Tips

Family Owned & Operated

Trusted & Highly Rated Service

Responsive & Timely Service

    Family Owned & Operated

    Trusted & Highly Rated Service

    Responsive & Timely Service

As a homeowner, navigating the world of HVAC systems can feel like deciphering a complex code. Fear not! In this comprehensive guide, we’ll unravel the mysteries of air handlers—those unsung heroes responsible for keeping your home comfortable year-round. Whether you’re curious about energy efficiency, safety, or simply want to understand how air handlers work, we’ve got you covered.

1. What Is an Air Handler?

1.1 The Basics

An air handler is a vital component of your heating and cooling system. Think of it as the conductor of your indoor climate orchestra. Here’s what you need to know:

  • Circulating Air: The air handler’s primary job is to circulate conditioned air throughout your home via ductwork.
  • Key Components:
    • Blower: This fan propels air across the evaporator coils.
    • Evaporator Coil: It exchanges heat with the air, either cooling it (in AC mode) or adding warmth (in heat pump mode).
    • Air Filter: Keeps the air clean and free of dust and allergens.
    • Electric Controls: These ensure seamless communication with other system parts.

1.2 How It Works

The air handler collaborates with other HVAC components, such as the condenser or heat pump. Here’s the dance it performs:

  1. Air Circulation: Return ducts bring indoor air to the air handler.
  2. Conditioning: The air passes through the evaporator coil, where it gains or loses heat.
  3. Supply Vents: Conditioned air is delivered to each room via supply vents.
  4. Thermostat Harmony: The air handler ensures the air temperature matches your thermostat setting.

2. Choosing the Right Air Handler

2.1 Sizing and Efficiency

  • Consult an HVAC dealer to determine the right size for your home.
  • Energy efficiency matters—look for units with high SEER (Seasonal Energy Efficiency Ratio) ratings.

3. Where Should You Install It?

3.1 Central Location

For maximum efficiency, place the air handler near the center of your home. This ensures even air distribution.

3.2 Ventilation Considerations

Install the air handler in well-ventilated areas, away from condensation or humidity.


Air handlers may not steal the spotlight, but they orchestrate your indoor comfort. If you’re in Blanchard, Norman, or anywhere in the Oklahoma City metro area, Yarbrough & Sons Heating, Cooling & Plumbing is your trusted partner. Contact us for expert advice and seamless HVAC solutions!

Ready for 5-Star Service?

Contact Yarbrough & Sons for all your HVAC & Plumbing needs in the Oklahoma City, OK area!

Book Online Book Online