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Ignoring an AC Not Blowing Cold Air can increase energy bills and lead to further damage.

AC Not Blowing Cold Air, But Fan Is On? Here’s What To Do

When you’re in the midst of a heat wave and your air conditioning unit is not blowing cold air, you can find yourself in a bit of a panic. This sort of situation needs quick action because, in many cases, hot air can cause serious damage. To determine whether you have a more serious problem or only a minor inconvenience, you can diagnose the issue yourself and, with the correct guidance, ensure that your AC unit is up and running and keeping your home nice and cool. Below are some common reasons why your AC Not Blowing Cold Air.

What Causes an AC Unit Not to Blow Cold Air, But the Fan Is On?

There are a few potential causes for an AC unit not to blow cold air, even though the fan is running. It could be as simple as a blown fuse or a more complex problem like a bad compressor.

Before you begin to troubleshoot, ensure that the thermostat’s temperature setting is set to a lower level than the room temperature.

A Dirty Ac Filter

A dirty air filter can reduce the airflow and cause your AC unit to work overtime without producing cool air. This is usually the culprit for an AC unit not blowing cold air, but the fan is running. To check, you must locate the filter, pull it out and hold it up to the light. You will want to replace it if it looks substantially dirty.

Clogged or Frozen Ac Coils

The AC coil can become clogged with dirt or even freeze over if the air filter is left dirty and neglected. A frozen coil often requires thawing and a professional cleaning to keep your unit working in peak efficiency. The evaporator coil is in the air handler, inside the air ducts. You cannot get to it on your own; professional help is recommended.

Thermostat Setting

The setting on your thermostat can be the difference between a functioning and a non-functioning AC unit. If the settings are incorrect, the unit may not produce cold air. Set the dial to five degrees cooler than the current room temperature to check.

A Failed Compressor

When the compressor fails, it can’t move the refrigerant through the system. This can result in a lack of cooling. The compressor is usually located outside the home, and it is rarely fixable without professional help.

Damaged Capacitor

The capacitor gives the compressor the charge it needs to work adequately. If there’s an issue with the capacitor, the compressor won’t be able to start. You may hear a noise from the outside unit when you switch the AC on. This noise is a sign of a failed capacitor. Professionals can tell immediately if your AC unit needs a new capacitor.

Refrigerant Leakage

A refrigerant leak will cause your compressor to struggle, resulting in an inability to generate cold air. This kind of leak requires professional help; it is not safe t mess with refrigerant if you are not certified to handle it.

A Blown Fuse

A blown fuse might be why your AC is not blowing cold air, even though the fan is running. Usually, the fuse will be in a gray box close to the outside AC unit. If you inspect the fuse, ensure your hands are dry before touching it. Never try to reset it manually. Having a professional repair this issue is safer – and more cost-effective in the long run.

Clogged Condensate Drain

Clogs in the condensate drain of your AC unit can cause leakage and damage the system. If you suspect your drain may be blocked, flush it gently with a cup of bleach and water, but never let the solution flow upwards. You can also check the condensate pump to ensure it works correctly.


There can be numerous reasons why an AC unit might not be blowing cold air, but the fan is running. However, some of these are remedied easily and with little effort, while others require further professional help. If you’ve tried all of the above tricks and still have no luck, it’s time to call Local Reliable Appliance Repair at 866-516-1222 to get it sorted. They provide top-notch and reliable AC services that will keep your unit running in no time.

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AC Not Blowing Cold Air But Fan Is On? Here's What to Do

AC Not Blowing Cold Air But Fan Is On? Here's What to Do
AC Not Blowing Cold Air But Fan Is On? Here's What to Do

1. Check if the fan is running and if the outside unit is running

Please make sure the fan on the outdoor compressor is on and running and the unit itself is making noise.

2. Check the air filter

Check the air filter and clean/change if necessary. A dirty or clogged air filter will restrict the airflow over the evaporator coils.

3. Check the evaporator coil

Ensure the evaporator coils are clean and the airflow is designed to allow maximum airflow through the coils.

4. Check the condenser coil

Check the condenser coils are clean and clear of any debris. Dirty or blocked condenser coils will cause the AC to blow warm air.

5. Check the thermostat

Ensure that the thermostat is set to cool and the set temperature is lower than the current inside temperature.

6. Inspect the refrigerant levels

Low refrigerant levels can cause the AC unit to run inefficiently and cause warm air to be blown out of the vents.

7. Call for a professional repair

If the above steps do not fix the issue, contact a reliable appliance repair like Local Reliable Appliance Repair at 866-516-1222 for a more detailed and professional assessment of your AC unit.

The average repair cost for AC not blowing cold air but the fan is on the issue is typically around $161 – $374. The minimum charge for repair can range from $50 – $100, and complex repairs can range from $250 – $450. For reliable repair service, please get in touch with Local Reliable Appliance Repair at 866-516-1222.

In conclusion, if you have any issue with your home appliances and HVAC system, contact Reliable Appliance Repair at 866-516-1222 – they have the experience and expertise to get the job done. With 35 years of experience, you can count on them to effectively, safely, and affordably care for your appliance and HVAC repair and installation needs.

FAQ About AC Not Blowing Cold Air But Fan Is On

Question: What do I do when my air conditioning isn’t blowing cold air, but the fan is on?

Answer: First, try turning off your air conditioner at the power source, allowing it to sit for a few minutes, and then turning it back on. This may reset the system and correct the issue. If this doesn’t fix the issue, you may need to check the thermostat and condenser unit or inspect for refrigerant leaks. If you can’t identify the problem’s source or fix it yourself, contact a licensed HVAC technician.

Question: What could be causing my air conditioner to blow warm air?

Answer: Causes of warm air from an air conditioner include low coolant levels, dirty air filters, a failing condenser, a blocked evaporator coil, or a malfunctioning thermostat. If you cannot determine the cause of the problem, contact a licensed HVAC technician to help diagnose the issue and repair your system.

Question: Why is my AC condenser not working?

Answer: Possible causes of an unresponsive AC condenser include a faulty motor, a tripped circuit breaker, frozen condenser coils, or a defective fan capacitor. If you cannot determine the cause of the problem, contact a licensed HVAC technician to help diagnose the issue and repair your system.

If you are experiencing problems with your air conditioner not blowing cold air, but the fan is on and are unable to identify or fix the source of the issue yourself, contact your reliable local appliance and HVAC licensed and factory-authorized vendor, such as Reliable in San Diego: 866-516-1222