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AC Maintenance: Warning Signs You Need Professional Help

It’s important to take care of your air conditioning system so that it can work well and have a longer lifespan. Regular maintenance can also prevent costly repairs and improve indoor air quality. However, despite your best efforts to maintain your AC system, there may be times when you need professional help. 

This article will discuss the warning signs that indicate you need to call an AC maintenance professional.

Poor Airflow

Poor airflow is a common problem with AC systems. It can be caused by a clogged air filter, blocked ductwork, or a malfunctioning blower motor. 

In case you observe that your air conditioning system is not providing adequate airflow or the air is feeble, it is recommended to seek the assistance of a skilled technician.

Strange Noises

Your AC system should operate quietly and smoothly. If you hear strange noises such as banging, rattling, or grinding, it’s a sign that something is wrong. 

These noises can indicate a loose belt, a damaged fan blade, or a failing motor. Ignoring these sounds can lead to serious damage to your AC system.

Unusual Smells

If you smell a damp and earthy odour emanating from your air conditioning unit, it means that mould or bacteria is thriving within it. These microorganisms can cause respiratory problems and worsen allergies. 

If you smell burning or electrical odours, it can indicate a more severe problem, such as an electrical short or a failing motor.

High Humidity

Air conditioning systems are designed to remove excess humidity from your home. If you observe that your house has increased moisture levels, it may indicate that your air conditioning system is functioning improperly. 

High humidity can cause mould growth, damage furniture, and make your home uncomfortable.

High Energy Bills

If you notice a spike in your energy bills, it may indicate that your air conditioning system is not functioning optimally. A poorly maintained AC system can consume more energy than necessary, causing your bills to skyrocket. 

A professional AC maintenance technician can identify the problem and fix it, reducing your energy costs.

Cycling On and Off

If your AC system is cycling on and off frequently, it’s a sign of a problem. This issue can be caused by a dirty air filter, a malfunctioning thermostat, or low refrigerant levels. Frequent cycling can cause your AC system to wear out faster, leading to costly repairs.

Warm Air

When your AC system is blowing warm air, it is an indication that there is a serious issue. This issue can be caused by a refrigerant leak, a malfunctioning compressor, or a clogged air filter. 

Ignoring this problem can cause your AC system to fail completely, leaving you without cool air during the hot summer months.

Water Leaks

If you observe water dripping from your air conditioning unit, it indicates that there is an issue. This issue can be caused by a clogged condensate drain, a damaged condensate pump, or a refrigerant leak. 

Water leaks can cause water damage to your home, electrical problems, and mould growth. A professional AC maintenance technician can fix the issue and prevent further damage.

Age of the AC System

The age of your AC system is also a significant factor in determining if you need professional help. If your air conditioning system has been operating for ten to fifteen years, it may be worth replacing it. 

Older AC systems are less efficient, require more repairs, and can be more expensive to maintain. A professional AC maintenance technician can help you determine if it’s time to replace your AC system and recommend a new one that fits your needs and budget.


It is very important to keep your AC system in good condition to guarantee that it functions effectively. Nevertheless, despite regular maintenance, the assistance of a professional might be necessary at times. 

If you notice any of the warning signs mentioned above, don’t hesitate to call a professional AC maintenance technician. They have the ability to identify the issue, repair it, and guarantee that your AC system operates seamlessly and effectively.

If you need reliable air conditioner maintenance in Mississauga, turn to Furnace King Home Services. Our heating and cooling company is dedicated to putting customers first. 

We specialize in installing energy-efficient residential furnaces, tankless water heaters, air conditioners, and indoor air filtration systems, as well as offering duct cleaning services and indoor humidification. Contact us today to schedule your appointment!