Think about your HVAC systems. There’s quite a collection of parts working together to keep your home comfortable. From the outdoor condenser unit to the maze of ducts running through your walls and ceilings, each component plays a very specific role.
You might be familiar with your thermostat or have changed an air filter, but some parts remain out of sight and mind. The air handler might not be a component you can picture right away, but we almost guarantee you’ve seen it before. It’s a very, very important part of your system that deserves your attention — especially if you want your heating and cooling to work properly for years to come.
What Exactly Is an Air Handler and What Does It Do?
An air handler is the indoor component of your HVAC system that moves air throughout your home. Think of it as the heart of your indoor comfort system. Usually installed in your attic, basement, or a dedicated closet, this box-shaped unit houses several key components that work together to circulate conditioned air.
Inside the air handler, you’ll find the evaporator coil, which absorbs heat from indoor air when cooling your home. It also contains a blower with a centrifugal fan that pushes air through your ducts and into your rooms. Many units include an air filter section to trap particulates and dust, helping to improve your indoor air quality as air cycles through.
Air handlers work with both heat pumps and air conditioners to manage airflow and heat exchange in your home. They don’t generate heat or cool air themselves — they simply move it where it needs to go.
The Main Components of an Air Handler
The blower motor and fan assembly create the airflow that pushes conditioned air through your ducts. This centrifugal fan needs to be powerful enough to circulate air throughout your entire home. The evaporator coil holds refrigerant that absorbs heat from indoor air during cooling cycles. This part works closely with your outdoor unit to manage refrigerant flow.
Most air handlers also contain a condensate drain pan and pump to collect and remove moisture that forms during the cooling process. This helps control humidity levels in your home. You’ll also find electrical controls that communicate with your thermostat to regulate when the system turns on and off.
Some higher-end models include variable-speed blowers that can adjust airflow based on your home’s needs, leading to better energy efficiency and more consistent temperatures. They might even have smart thermostat compatibility for more precise control.
Does Your Air Handler Need a Fix or Two? These Signs Will Help You!
Like any part of your HVAC system, air handlers can develop problems that affect your comfort and energy bills. Keep an eye out for these warning signs:
If you notice weak airflow coming from your vents, your air handler’s blower motor might be struggling. Strange noises — like squealing, grinding, or banging — often point to mechanical issues with the fan or motor. When you see water pooling around your air handler, it could mean a clogged condensate drain or a refrigerant leak.
Rising energy bills without a change in usage patterns might signal that your air handler is working harder than it should. Poor indoor air quality or excessive dust accumulation can indicate filter problems within the air handler.
Maintenance Tips to Keep Your Air Handler Running Smoothly
Taking care of your air handler isn’t complicated but makes a huge difference in its performance and lifespan. Every month, check and change your air filter if it’s dirty. This simple task improves airflow and keeps dust from building up on the evaporator coil.
Twice a year, look at the condensate drain line and clean it if necessary to prevent mold growth. Keep the area around your air handler clean and clear of storage items, especially if it’s in your attic or utility closet.
Pay attention to your duct system, too, as leaky ducts can put extra strain on your air handler when it tries to distribute air throughout your home. Having your ducts inspected occasionally can help maintain proper airflow and system efficiency.
For the technical parts inside the air handler, like checking refrigerant levels or inspecting the evaporator coil, it’s best to call in professionals for air conditioner maintenance.
How an Efficient Air Handler Saves You Money
An efficiently running air handler can put a serious dent in your monthly utility bills. When all components work properly, your system doesn’t need to run as long or as often to maintain comfortable temperatures.
Many newer air handlers come with Energy Star ratings, showing they meet strict efficiency guidelines. These models often feature variable-speed motors that adjust to your home’s changing needs, rather than simply running at full blast or completely off.
The efficiency gains add up; less energy consumption means lower bills and a smaller carbon footprint. Plus, a well-maintained air handler puts less strain on your entire HVAC system, potentially adding years to its lifespan and delaying the need for expensive replacements.
In hot San Bernardino summers, an efficient air handler manages humidity better, too, keeping you comfortable without constantly adjusting your thermostat. During cooler months, it distributes heat evenly throughout your home, eliminating cold spots.
Keep Your HVAC System at Its Best With Henley’s Plumbing & Air
Your air handler and all other components of your HVAC system deserve regular professional attention to stay in good shape. Henley’s Plumbing & Air can deliver! Our maintenance services can catch small issues in your air handler, within your furnaces or heat pumps, and all other HVAC components.
Our team proudly serves residents in and around San Bernardino with honest assessments and quality work. That includes the following areas:
- Riverside
- Fontana
- Redlands
- Calimesa
- Cherry Valley
- Woodcrest
- Chino
- Chino Hills
- Ontario
- Anaheim
- Jurupa Valley
- Eastvale
- Corona
- Norco
- And more!
Don’t wait until something goes wrong with your air handler or any other part of your HVAC system. Schedule a check-up today!
