The Top AC Unit Issues and How to Avoid Them

Learn about the most common problems with AC units and how to prevent them from an HVAC industry expert. From faulty installations to poor maintenance, find out how to keep your unit running smoothly.

The Top AC Unit Issues and How to Avoid Them

As an HVAC industry expert, I have encountered numerous problems with air conditioning units. These issues range from faulty installations to inadequate maintenance, and they can have a significant impact on the unit's performance and efficiency. In this article, I will discuss the most common problems with AC units and provide tips on how to prevent them.

Improper Installation

One of the leading causes of AC problems is incorrect installation. A poorly installed unit can result in duct leaks and low airflow, which can greatly affect its performance.

Additionally, if the coolant charge does not match the manufacturer's specifications, it can also impact the unit's efficiency. When hiring a technician to install your AC unit, it is crucial to ensure that they are qualified and experienced. Ask for references and check their track record. A proper installation is essential for the long-term functioning and efficiency of your AC unit.

Inadequate Service Procedures

Another common issue with AC units is inadequate service procedures. Unqualified technicians may encounter problems with refrigerant charge or worsen existing issues by adding refrigerant to an already full system.

This can lead to further damage and expensive repairs. When hiring a technician to maintain your AC unit, make sure they are certified and have experience working with your specific type of unit. Ask for proof of their qualifications and ensure that they follow proper service procedures.

Lack of Maintenance

Lastly, inadequate maintenance is a major cause of AC problems. Many people neglect to regularly maintain their units, which can result in various issues. It all starts with a dirty air filter, which can restrict airflow and cause the unit to work harder than necessary.

This can lead to higher energy bills and a shorter lifespan for your AC unit. To avoid these problems, it is crucial to regularly clean or replace your air filter. Additionally, it is recommended to have your AC unit professionally serviced at least once a year. This will ensure that any potential issues are caught early on and can be addressed before they become major problems.


In conclusion, there are several issues that can arise with AC units. Improper installation, inadequate service procedures, and lack of maintenance are all common causes of problems.

To prevent these issues, it is essential to hire qualified technicians for installation and maintenance, as well as regularly clean and service your AC unit. By taking these preventative measures, you can ensure that your AC unit runs smoothly and efficiently for years to come.