When to Schedule AC Maintenance & What to Expect

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When to Schedule AC Maintenance & What to Expect

Signs That You Need to Schedule Your AC Maintenance

Air conditioning is essential to in-home comfort, keeping you cool and managing the indoor humidity during hot summer days. The average lifespan of an air conditioning system is about 15 years. Typically, your AC maintenance can be done yearly if you haven’t had issues. If you have had problems like low refrigerant, you should make sure to call Merts Heating & Air Conditioning right away to get ahead of the cooling season. Yearly maintenance will help avoid expensive breakdowns or an emergency replacement.

The following indicators signal that you should schedule AC maintenance with professionals like Merts Heating & Air Conditioning.

1. Blowing Warm Air

If the air coming from your vents is warm and not cool, it’s time to call a professional to assess the condition of your AC system.

2. Strange Smells

If there are odors coming from your air conditioner vents, this could indicate that you need to get your system inspected. A strong odor could indicate an electrical issue. Contact an AC professional immediately. A musty smell may mean there’s mold in your ductwork or even in the cooling unit itself. 

Merts’ trained technician will assess your AC unit to decide the necessary steps to fix the issue. Some common problems include:

  • A Leak in your refrigerant line
  • Circuit boards, power supply wires, fans, or compressors on fire
  • Accumulation of water in the drain pan or drip lines, causing mold and mildew

3. Too High Humidity

Your air conditioning unit is not only designed to blow cool air into the space, but it should also remove humidity from inside. Too much humidity can cause condensation on hard surfaces and windows, which may lead to mildew. Overall indoor air quality is also affected by the interior humidity levels. To keep your home environment healthy and comfortable, call a professional to check your system.

4. Higher Electricity Bills

Another sign your HVAC system needs regular maintenance is high electricity costs. This may mean one or more components have stopped working effectively, causing your overall system to use more energy to get the job done.

At Merts Heating & Air Conditioning, we have over 70 years of experience. You can be sure of quality service when you choose us for all your AC maintenance needs.

5. Restricted Airflow

While this is a similar issue to having warm air emitting from the vents, a low amount of air flow signals a problem with your air conditioner. Too little air flow will decrease the efficiency in cooling your space and usually means there’s a problem with the compressor but could also be as simple as having a problem with your ducts. A trained AC technician can inspect the system to discern the specific issue and recommend the best option for getting your AC running at its best. 

Merts Heating & Air Conditioning provides residential HVAC service within Steger, IL and Crown Point, IN. When you schedule service, we will inspect all parts of your AC unit to ensure it works properly.

6. Loud Noises Coming From the Unit

When the AC is running and it seems unusually loud, or is grinding, squealing, squeaking or scraping, there’s certainly a malfunction inside the unit. If you hear any irregular sounds coming from your unit when it’s in active cooling mode, the chance is very high that something isn’t as it should be and the AC should be thoroughly checked.

In general, if you notice any noise in your AC unit or system in Steger, IL, and Crown Point, IN, call Merts Heating & Air Conditioning immediately for maintenance.


AC maintenance can be done within 1 year as long as you haven’t had issues. If you have had problems in the past, such as low refrigerant, then you should make sure to call Merts for AC maintenance and get ahead of the cooling season to avoid expensive breakdown or emergency replacement.

AC maintenance is a critical home comfort task, which requires particular skills and knowledge and can ensure better longevity of your AC system. Whether you need AC maintenance, repair or an HVAC system replacement, our trained professionals can help.  Contact Merts Heating & Air Conditioning today for more information about our expert AC services.