Troubleshooting: What To Do If Your Air Conditioner Is Not Blowing Cold Air

Is your work place air conditioner malfunctioning and not blowing cold air? This is not only inconvenient, but it can also cause health and safety problems for the storage of chilled foods.

Here are some common reasons why your air conditioner unit isn’t blowing cold air and how to troubleshoot them:

1. Power Issues and Incorrect Thermostat Settings

The most basic thing you should do is to check if your AC is plugged into the outlet correctly and the power cord remains intact. Next, check the electrical panel to see if the circuit breaker is tripped or a fuse is blown.

If both look goods and your unit is still not blowing cold air, the next step is to check the thermostat settings if it is set at the appropriate temperature.

2. Dirty Air Filter

A dirty air filter blocks the airflow so less air passes through the system, and as a result makes the air warmer.

We suggest that you clean or replace/change your air filter every month or as often as required.

3. Refrigerant Leak or Refrigerant Pressure

Refrigerant plays a very important role in air conditioning. If there’s a refrigerant leak or issue such as a compression failure, then the air is not going to cool as efficiently.

Refrigerant is dangerous to handle on your own so it is best to schedule an inspection with a professional.

4. Air Duct Leaks

The air ducts deteriorate as time passes, with age and use. It can lose insulation, accumulate tears and holes, and become poorly sealed, which causes the AC unit to stop blowing cold air.

Inspection and repairs to air ducts by a professional technician will solve the issue.

5. Dirty Evaporator Coils

Over time, your air conditioning unit’s evaporator coils get dirty. The evaporator coil or ‘indoor coil’, is often described as the “cold” coil because it gives indoor cooling. This coil absorbs indoor heat and adds it to system’s refrigerant as it converts from liquid to gas. The gaseous refrigerant moves to the outdoor unit.

Moreover, another function of the evaporator coil is to reduce humidity, which results in a more effective cooling of your indoor environment.

A dirty evaporator coil can lead to the AC system overheating and shutting off.

In most air conditioning systems, the evaporator coil is sealed within the air handler, thus may not be readily accessible for those who prefer DIY cleaning and maintenance. It should be cleaned by a professional air conditioner cleaner, so we recommend scheduling an appointment.

Envirobridge specialist cleaning teams are equipped with all the latest equipment, products, training, insurance and health & safety know-how to ensure we can clean any cooling equipment.

Got a question about cleaning that you need answering? Contact ususing our contact form or on 01295 780444 and we’ll do all we can to help you.

Download our free printable checklist for A/C and cooler cleaning and maintenance. Always know what you need to do and when.