Have you noticed ice forming on your air conditioner’s coils, even in the middle of a sweltering summer? It’s a symptom of inefficiency within the system.
As the go-to crew for lasting AC repair in Boca Raton, FL, we at Cool By Design help troubleshoot and fix issues like this all the time. Learn more about it here.
What Are Evaporator Coils?
“Why is there ice on my AC unit?” It’s easier to understand how this happens by knowing the role of evaporator coils, the part of the system that tends to freeze up.
This series of metal tubing houses refrigerant, a fluid substance that’s integral to the cooling cycle. It absorbs warmth from the air inside your Boca Raton property to bring down the temperature.
When something disrupts this heat exchange process, the surface of the coils can drop below freezing. Moisture in the air condenses on the tubes and turns into ice.
Top Reasons Behind a Frozen Evaporator Coil in Boca Raton
Evaporator coils typically reach excessively low temperatures because of the following issues:
Restricted Airflow
Why is there ice on your AC unit? When something restricts the natural air channel within a cooling system, warmth can’t properly reach the coils. Here are some possible fixes:
- Change the air filter: A dirty filter becomes a barrier that hampers the flow of air. Replace it every 30 to 90 days to preserve the system’s efficiency and your indoor air quality.
- Clear return grills: Centralized setups in Boca Raton pull warm indoor air through return vents. Check the intakes of each one and move curtains or furniture blocking them.
- Open supply vents: Did you close the supply vents in unused rooms to save energy? Unfortunately, this can backfire by disrupting the airflow too much.
You may also have a case of limited airflow due to internal complications, such as ductwork leaks and faulty fan motors, which require professional servicing.
Thermostat Issues
Sometimes, the solution is as simple as fine-tuning your thermostat. Make sure you set it to the correct mode and temperature. Excessively low settings may cause the system to overwork, leading to freezing.
Inaccurate readings are another possible culprit. You should install the device in a central location away from drafts, direct sunlight, and heat sources.
If your air conditioner continues to run after reaching the set temperature, you might need to have the thermostat wiring inspected.
Low Refrigerant Levels
Why is there ice on your AC unit despite Boca Raton’s warm climate? A system with insufficient refrigerant compromises the heat transfer, causing the coils’ temperature to drop.
It’s possible you have a manufacturer’s defect if you recently purchased the setup, but this is incredibly rare. In most cases, low refrigerant stems from a leak. Warning signs include:
- Weak airflow coming from the vents
- A faint hissing or bubbling noise
- Rising energy bills without a clear explanation
- Warmer air despite a cooling setting
- A sweet smell permeating your indoor spaces
- Oily residues
Bring in a specialist to repair the breach first before recharging the system. Leaks in major components may demand a replacement for a long-term fix.
Dirty Coils
A metal case protects the coils from most debris, but small particulates like dust can still enter through the small vents and accumulate over time. A thick layer of grime hampers heat transfer and makes the system work harder than it should.
Here’s how you can refresh the coils:
- Access the interior: Power down your unit at the breaker box and carefully remove the panel or casing that covers the coils. Keep an organized workspace by setting any screws or small parts aside in a safe spot.
- Remove loose dirt: Use a soft brush or cloth to sweep away visible dust and debris gently. A light touch keeps the fins and coils from getting bent.
- Apply a cleaning solution: Grab a coil cleaner from a Boca Raton hardware store. They’re easy to spray on and rinse off easily.
- Rinse the coils: Follow it up with a careful rinse using a spray bottle or hose on low pressure. Avoid soaking any sensitive components.
- Wipe down and dry: After cleaning, pat the coils dry with a clean towel or wait for them to air dry completely before reassembling the unit.
Swiftly Addressing Air Conditioner Issues, One Boca Raton Property at a Time
“Why is there ice on my AC unit?” With so many potential issues, such as blocked vents or coolant leaks, why not leave it to Cool By Design? Contact us today to schedule an inspection, or read our blog to learn about the causes of an inefficient AC.