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Why Your AC Coils Are Freezing Up



Answering the Question: What are Frozen Coils?

Frozen Coils are a common problem that many homeowners face when it comes to their central AC system. It can leave many scratching their heads, wondering what caused the problem, and how they can fix it.

As a customer-centered AC service provider, Reliable Appliance & HVAC has seen it all. One of our recent customers, Mr. Thomas Saunders, reached out to us for help with his central AC system, which was experiencing a Frozen Coil problem.

Thomas is a resident of San Francisco, living in a three-bedroom apartment. His central AC system is a Carrier Infinity Series. One day during a heatwave, Thomas noticed that his AC unit wasn’t cooling his apartment as it used to. He also noticed ice buildup around the coils in the air handler. After trying to troubleshoot the problem himself and achieving no success, Thomas called Reliable Appliance & HVAC for help.

At Reliable Appliance & HVAC, we understand that having your central AC system break down is a frustrating experience. That is why we act quickly to remedy the issue. The same day Thomas called us for help, we sent one of our expert technicians, Peter, to his apartment.

As soon as Peter arrived, he carried out diagnostic procedures on the system. He found that the evaporator coil in Thomas’s Carrier Infinity Series unit was frozen, causing the lack of cooling and ice buildup.

Peter explained to Thomas that frozen coils are caused by poor airflow, which leads to restricted circulation of warm air over the evaporator coil. This restricted circulation ultimately causes the coil to freeze.

Luckily, Thomas had called us at the right time, as the system hadn’t been running for too long. Peter was able to fix the problem in a timely manner, and the coils were able to thaw out on their own.

Peter also offered Thomas a quote for the parts and labor required and laid down a detailed table of costs, showing the part’s price and the brand factory’s recommendations. His quote was very reasonable in comparison to other service providers in the area.

Thomas was overjoyed with the service he received from Reliable Appliance & HVAC. He said he had learned a lot from Peter’s explanation of the problem, and he appreciated the fair price he quoted for fixing the problem.

In conclusion, experiencing Frozen Coils in your central AC system is a lousy experience, but it can be remedied. Having fast and efficient service like that of Reliable Appliance & HVAC makes the experience much better for homeowners like Thomas, who rely on their AC system to keep their homes comfortable during hot weather.


In conclusion, Reliable Appliance & HVAC has the experience necessary to diagnose and fix any problem your central AC unit might have, ensuring you don’t have to suffer through any inconvenience related to your home’s cooling system. So, if you’re ever in need of quick and reliable AC service, don’t hesitate to reach out to us.

How to Prevent Frozen Coils from Happening: Recommendations from Reliable Appliance & HVAC

Frozen coils can be a huge problem for homeowners who rely on their air conditioning system to keep their homes cool and comfortable. So, what can you do to avoid this issue from happening? We have gathered some recommendations from different sources to help you prevent frozen coils in your AC system.

Manufacturer Recommendations

Most AC manufacturers recommend having your unit serviced annually by a professional HVAC technician. This preventative maintenance visit often includes cleaning the coils and changing the air filter, which can help prevent frozen coils from occurring. Additionally, manufacturers suggest keeping the air filter clean at all times to maintain proper air flow.

Local Appliance Companies’ Recommendations

We talked to some of the local HVAC companies in our area, and they mentioned a few preventive steps that homeowners can take to avoid frozen coils. One piece of advice is to make sure that the thermostat is set at a reasonable temperature. The temperature should be consistent and not fluctuate too much. An HVAC technician can also check the condition of the ductwork and check for any leaks or blockages that could impact the cooling process.

Reliable Appliance & HVAC Technician’s Recommendations

Our technicians suggest having regular maintenance done by an experienced professional. They also advise homeowners to check the air filters regularly and replace them frequently. Additionally, they recommend running the AC system for a few minutes every day, even in the winter months when it is not in use, to help keep the system in good working order.

Preventative Actions to Avoid Frozen Coils Issues

We have compiled a list of preventive actions to help homeowners avoid frozen coils issues:

  • Schedule annual maintenance and inspections with a qualified HVAC technician. It is important to have a professional service provider who can identify issues early on and fix them before they become major problems.
  • Keep the air filters clean and replace them regularly. Dirty filters can restrict airflow and cause the system to work harder than it needs to, which can lead to frozen coils.
  • Maintain a consistent temperature. If the temperature in your home fluctuates too much, it can cause your AC system to work harder than it needs to, leading to frozen coils issues.
  • Ensure proper ventilation. Keep the vents and ducts free from blockages and ensure adequate ventilation to prevent airflow issues that can contribute to frozen coils.
  • Don’t overload the system. Avoid running too many appliances or electronics at once, as this can cause the AC system to work harder than it needs to, increasing the risk of frozen coils.


In summary, frozen coils are a common AC problem that can be prevented with regular maintenance and proper care. By following the recommendations from manufacturers, local HVAC companies, and our experienced technicians, homeowners can avoid frozen coils issues and keep their AC systems running smoothly. Remember to schedule regular maintenance, keep filters clean, maintain a consistent temperature, ensure proper ventilation, and avoid overloading the system. If you have any doubts or questions, don’t hesitate to call Reliable Appliance & HVAC at (866) 516-1222.

Reliable Appliance & HVAC: Average Repair Cost for Frozen Coils Issue

Hey there, it’s the team at Reliable Appliance & HVAC, and we’re here to give you the lowdown on the average repair cost for the dreaded frozen coils issue.

What are Frozen Coils?

Before we dive into the cost, let’s first take a quick look at what we’re dealing with. Frozen coils are a common issue that many homeowners face with their central AC units. The problem arises when the evaporator coil (located inside the air handler) freezes over because of a buildup of dust, debris, or other gunk.

When this happens, the AC unit is unable to cool the air effectively and can even stop working entirely. A frozen coil issue can manifest in several ways – weak airflow, warm air from vents, strange noises, or high energy bills.

Minimum Repair Cost

Okay, now let’s talk numbers. Assuming that prices have gone up 20%, the minimum repair cost for a frozen coil issue with a central AC unit is around $200. This cost includes the labor, diagnosis, and any small parts needed to fix the issue.

Complex Repair Cost

If your frozen coil issue is more complex (perhaps you need a complete replacement of the evaporator coil), then the repair cost can easily rise to $1,500 or more. This price includes more extensive labor and material costs, which can vary depending on the brand of your central AC, its location, and the residence type.

Necessary Parts

Now, let’s take a look at the parts that may be necessary for a repair. Here is an itemized list below:

  • Evaporator coil
  • Refrigerant
  • Thermostat
  • Drain pan
  • Copper line set
  • Service valve
  • Refrigerant tubing


If you’re experiencing the symptoms of a frozen coil issue, we advise you to call your local professionals at Reliable Appliance & HVAC. Our team of expert technicians is well-versed in diagnosing and repairing frozen coil issues quickly and efficiently. We promise to get your AC running like new again in no time, and at a reasonable cost.

Give us a call at (866) 516-1222 to schedule an appointment today.


In summary, a frozen coil issue can be a major headache for homeowners, but it’s nothing that can’t be fixed. Depending on the severity of the issue, the repair cost can range from $200 to $1,500 or more. Remember, it’s essential to address the problem as soon as possible to avoid further damage and keep your AC running smoothly.

Frozen Coils: Why Reliable Appliance & HVAC is the Right Choice

When it comes to experiencing the heat of the San Diego summer, a well-functioning AC system is an absolute necessity. However, sometimes things go awry, and this is where Reliable Appliance & HVAC comes in. As a local, family-owned business in San Diego, we take pride in providing same-day service for appliance and HVAC repair and installations. One common issue we are known to deal with is Frozen Coils.

What are Frozen Coils?

AC units send refrigerant through a system of coils to cool the air. If there is a blockage or reduced airflow, the evaporator coil can freeze. This blockage can be caused by a variety of things, including dirty air filters or a malfunctioning blower fan. Frozen coils not only affect the cooling ability of your AC system, but they can also lead to more serious damage such as compressor failure.

How We Can Help

At Reliable Appliance & HVAC, we understand the frustration of dealing with a malfunctioning AC system. That’s why our highly trained technicians, with a minimum of 5 years of experience in the field, will arrive promptly to diagnose and address the issue. Upon arriving, our technician will take the following steps to resolve the problem:

  1. Run diagnostics to determine the cause of the frozen coils.
  2. Thoroughly clean and/or replace air filters.
  3. Inspect and repair any fans, motors or parts found to be malfunctioning.
  4. Check refrigerant levels and recharge if necessary.

We pride ourselves in fair and affordable pricing, and for your convenience, we offer a table listing parts, materials, and labor costs for your specific brand of central AC unit. Our goal is to provide high-quality service that meets your needs and budget.

Why Choose Reliable Appliance & HVAC

As a licensed and insured company, we offer peace of mind with a 90-day warranty on all repairs. In addition, we value our community and offer discounts to first-time customers, including $25 off repair costs. We prioritize our customers and strive to provide the best customer service possible.

In conclusion, if you’re experiencing issues with your AC system, including frozen coils, rely on the experts at Reliable Appliance & HVAC. With our highly trained technicians, same-day services, fair pricing, and commitment to customer satisfaction, we ensure that your AC system will be running smoothly in no time.

FAQ: Why Your AC Coils Are Freezing Up and Frozen Coils

Q: What causes AC coils to freeze up?

A: One of the primary reasons your AC coils might freeze up is due to a dirty air filter. A dirty air filter can cause restricted airflow, which leads to a buildup of cold air inside the unit. Other possible causes of frozen coils include low refrigerant levels, a malfunctioning fan or blower motor, a faulty thermostat, or a blocked or damaged air duct.

Q: How can I prevent my AC coils from freezing up?

A: You can prevent your AC coils from freezing up by regularly changing your air filter, scheduling routine maintenance on your unit, and keeping your air ducts clean and free from blockages. It’s also essential to maintain proper refrigerant levels and ensure proper airflow throughout your unit.

Q: What are the signs of frozen AC coils?

A: Some of the signs of frozen AC coils include reduced airflow from your vents, unusually high energy bills, the presence of ice on your coils, and the formation of frost or condensation around your unit.

Q: Do I need to call a professional if my AC coils freeze up?

A: If you suspect that your AC coils are frozen, it’s always best to call a professional HVAC technician like Reliable Appliance & HVAC. Attempting to fix the issue yourself can result in further damage to your unit, as well as potential safety hazards.

Q: What can I expect from Reliable Appliance & HVAC if I call them about frozen AC coils?

A: When you call Reliable Appliance & HVAC, our technicians will quickly diagnose the issue and provide you with a detailed quote that outlines all necessary parts, materials, and labor costs. We only use brand name factory-recommended parts to ensure that your unit is repaired to the highest possible standard.

Q: How much will it cost to repair my frozen AC coils?

A: The cost of repairing your frozen AC coils will depend on several factors, including the brand of your central AC unit, the type of AC system you have, the location of the unit, and the extent of the damage. At Reliable Appliance & HVAC, we prioritize transparency and will provide you with a detailed, itemized list of all costs involved in the repair process.

If you’re experiencing issues with frozen AC coils or any other HVAC problem, don’t hesitate to call Local Reliable Appliance Repair at (866) 516-1222. Our experienced technicians are available to diagnose and repair your unit quickly and efficiently, so you can get back to enjoying the comfort of your home.

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