If you’re having problems with your air conditioner freezing up, then you’ll be happy to know there are only a handful of reasons why it happens. Here, we’ll present the top three causes and offer you solutions for each one.
The Top 3 Reasons Why Your Air Conditioner Freezes Up
1. Lack of Airflow
One of the most common reasons why an air conditioner freezes up is because air moves too slow through the AC unit. Normally, the cooling coil grabs water from the air and drains it off. If air doesn’t move quickly enough, the water will freeze on the coil instead of draining.
First, check the filter to see if it’s dirty. If so, then replace the filter. Many times, owners forget to change filters on a regular basis, and this can be an easy fix. If changing the filter doesn’t fix the problem, then check your ducts for blockages. If neither of those two solutions work, then it’s time to call in a professional.
2. Loss of Refrigerant
Refrigerant can also be the cause for an air conditioner freezing. Without refrigerant, the coil freezes. With a healthy system, refrigerant should last indefinitely without replacement. However, leaks can develop over time. The solution is to repair the leaks and replace the missing refrigerant.
Most systems use R-22 as the refrigerant. However, this chemical can cause damage to the ozone layer when released into the environment. To replace it, a specialist needs to first recover it in a way that won’t result in harm to individuals or the environment. R-22 can be harmful to your health, so don’t attempt to handle it yourself.
3. Outside Temperature & Thermostat
The third most common reason for air conditioners freezing is due to the actual temperature at the machine. If the thermostat is not functioning correctly or the AC runs on cold nights, then the cooling coil will naturally freeze. The coil depends on the presence of warmer air. If the coil can’t cool the air, then no temperature transfer occurs.
If your air conditioner freezes occasionally because you sleep with it on, then you can solve the problem by turning the unit off at night. You can program modern thermostats to switch the unit off at certain times of day. If the problem is with the thermostat itself, then an HVAC technician can diagnose and replace it. Don’t attempt to replace your own thermostat due to the risk of electrocution.
Call Aqua Plumbing & Air to Fix Your Frozen AC Unit
Aqua Plumbing & Air services AC units in Sarasota and Venice, FL. If you’ve tried replacing the filter and still your air conditioner freezes up, then give us a call. You may have noticed a slight increase in your energy bill during the same time as your AC freezing. If so, then you’ll enjoy the savings to your electric bill every month by calling us now.
Written by John Miller