Blog Layout

Notice Ice On Air Conditioner Pipe? | Troubleshooting Tips

InterCounty Supply • Jul 08, 2021

Why Is Ice On My Outside Air Conditioner Pipe?

Multiple hvac systems near small bushes

As scorching temperatures are making their way across the United States, your AC unit is working hard to keep your family cool. However, as the demand is high for your air conditioner, you may run into some system issues at some point. While several problems can occur, ice formation on your AC pipes is a common issue.



Keep reading to learn more about this common air conditioning problem, including tips on how to fix it.

Ice on air conditioner pipe?

Notice ice on air conditioner pipe outside your home? Even in the middle of the summer, this is a common AC problem. Luckily, there are only a few possible causes of this issue, and the solution can be pretty straightforward.


Here are a few common reasons why you have ice on your air conditioner pipe outside:

Not enough airflow over evaporator coil

An evaporator coil is a vital component in an air conditioning system. When warm air travels over this coil, your AC unit’s refrigerant helps to remove the heat from the air. The cooled air is then pumped back into your home.


If your system is experiencing low airflow over this evaporator coil, the refrigerant in your system could be trying to cool air that isn’t there. That said, the excess cold can cause your outdoor refrigerant pipe to freeze.

If you notice a frozen air conditioner line outside your home, the low airflow may be caused by:


Dirty coil

Clogged air filter

Blower fan problems

Air vent issues

Leaky air ducts


If your AC freezes up outside in the middle of the summer, there’s no need to worry! Keep reading to learn how to find a solution.

Troubleshooting tips
Take a look at the following steps to solve the issue in no time:

Adjust settings to thaw the ice

  1. Make sure your thermostat is turned off. Change the setting from COOL to OFF.
  2. Adjust the fan setting to ON rather than AUTO.
  3. After waiting three to four hours, turn your thermostat to the COOL position.
  4. Once the AC is turned back on, the system’s blower will bring in warm air, which should thaw the ice on your air conditioner pipe outside.

Examine AC filter

On some occasions, a dirty air conditioning filter could be limiting the airflow in your system, which could lead to a frozen pipe. To ensure proper airflow—and also improve indoor air quality—make sure to change your air filters periodically. If your filter looks grey and dirty, toss it immediately and add a replacement. This could help to thaw the AC unit’s frozen pipe outside.

Check AC vents

Another place to look is your AC return vents, including your supply vents. While your supply vents are used to push cool air into your home, return vents are utilized to bring warm air into your air conditioning system. When either of these are excessively dirty or clogged, that can have a huge impact on airflow. Additionally, as these vents can be opened and closed, make sure they’re in the open position.

Hire an AC professional

If you’d rather leave the problem to the AC experts, that’s a great decision! They can troubleshoot the issue right away and determine the best solution. Calling an AC professional can save you tons of time and energy.

Notice low refrigerant levels?

Refrigerant is a liquid that cools the warm air in your AC system. However, if your AC unit is low on this refrigerant, this can cause a decrease in temperature while also dropping the pressure. As a result, the AC unit can freeze up outside.

Refrigerant leak

Many homeowners think their AC system needs a “refill” on refrigerant. However, that isn’t true at all. As refrigerant continues to move through your system in a closed loop, low refrigerant means you have a leak.

If you have a frozen air conditioner line outside, there could very well be a leak.


However, check out some other common signs of a refrigerant leak:

  • Warm or mild air coming from your vents
  • Unusually high energy bills
  • Bubbling or hissing sounds coming from your refrigerant line



If there happens to be a leak, keep reading for what to do next.

Contact an AC expert

Unfortunately, if you have a leak, there aren’t many options for a DIY solution. To get your AC back up and running, be sure to call an air conditioning professional. Refrigerant is expensive and the solution can be complicated, so it’s best to leave it to the experts.


If you notice ice on your air conditioner pipe outside, follow the tips above to find a quick solution.

Homeowner Looking For Reliable Heating, Cooling Or Plumbing Supplies?

Our dedicated specialists are standing by to help.

Most homeowners in need of new heating or cooling equipment will do an internet search to get information. Such a search will typically yield two results: what to buy or where to buy but not why to buy. At InterCounty Supply, as a wholesale supply house, we present all the options for what to buy and why it would be the best choice for YOUR situation. After all the options are presented a homeowner can decide for themselves what they need. ICS then has a licensed, factory trained contractor who SPECIALIZES in the equipment you need come to your home to provide the complete installation cost for the equipment you need. ICS will also handle all the paperwork for any rebates that are applicable.


Have questions, give us a call 914-939-4350 or fill out the form and one of our specialists will be in touch shortly.


Get A Free - No Obligation Quote

Our Specialist are

standing by to help

Blog Post Form

Other Helpful Articles

By ICSNY 01 Mar, 2024
Discover the benefits of a home humidifier for health and comfort. InterCounty Supply guides you to the perfect humidity solution for your home.
By ICSNY 01 Mar, 2024
Discover the benefits of a geothermal furnace for your home with InterCounty Supply. Sustainable, efficient heating and cooling solutions await you.
By ICSNY 01 Mar, 2024
Discover the perfect tankless water heater for your home with our comprehensive guide. Learn about sizing, selection, and maintenance for optimal efficiency.
Share by: