8 Common Signs of HVAC Damage That Needs Servicing


Your heating, ventilation, and air conditioning (HVAC) system plays a large part in keeping your home comfortable. Maintaining it is essential, especially during Florida’s intense summer weather when it can keep the temperature from getting too hot. Here are five signs that your HVAC needs to be repaired so you can schedule service quickly and avoid major breakdowns.

1. Puddles and Condensation

One common sign of HVAC failure is the accumulation of puddles or condensation in areas not usually prone to it. Condensation is expected as your HVAC unit works to maintain a comfortable temperature inside your home. However, if you notice puddles forming in your kitchen or bathroom, you will want to schedule HVAC service as soon as possible.

2. Noise

One of the most common symptoms of a failing HVAC unit is loud noises from the unit itself or the ductwork. If you hear any strange noises that were not there previously, it is good to have your HVAC unit checked out by a professional.

3. Odors

Another sign of a future HVAC problem is the sudden onset of intense and unpleasant odors, such as ammonia or sewage. The longer you ignore these smells, the worse they are likely to become. If you can identify the source of the odor, it is important to schedule service as soon as possible before the problem gets worse.

4. Slow Air Movement

Your HVAC system should provide adequate airflow throughout your home, even during the hottest days of summer. But, if your system is struggling to keep up and is producing hot and stuffy air, it is time to schedule an HVAC service.

5. Uneven Temperature

Suppose you have an HVAC system designed to provide individualized temperature control. In that case, you will notice that your system will not distribute heat evenly throughout your entire home. But, if you notice that the temperature in one or more areas of your home is significantly different from the rest, it is a good idea to schedule an HVAC service.

6. Poor Air Quality

If you start noticing that air quality in your home has been worsening, it may indicate that your HVAC unit is beginning to fail. The presence of particles of dust and other pollutants in the air can make you feel sick, and it can be a sign that your HVAC needs repair.

7. Environmental Factors

Finally, if your HVAC system has suddenly started acting up, even though the only thing that has changed is the weather, you may need to schedule service. The weather can cause your HVAC unit to work harder than usual, which can cause your system to break down faster than it would at other times of the year.

8. Unexpected Shutdowns

If your HVAC system seems to be operating normally and then suddenly shuts down, the problem could likely be a simple one, such as a dirty air filter. If you think this is the case, you can try cleaning it on your own before scheduling an HVAC service. However, if the unit shuts off unexpectedly a second time, you will want to schedule service as soon as possible.


If you notice that your HVAC system starts struggling during one season, you may want to schedule service as soon as possible to avoid problems during the worst weather. If you notice any of these signs of a failing HVAC system, scheduling service with a professional from service experts is good.

Mainline Heating and Air has provided dependable heating and ac service and quality products to our Birmingham, Pelham, Alabaster, and Jefferson/Shelby county area since 1989. We are uniquely qualified to help you select the comfort system that best fits your home and budget. Our technicians are at your service from 7:00 a.m. until 5:00 p.m. Monday through Friday. For emergency heating and AC service on weekends or evenings, just call (205) 664-4751. 

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