5 Reasons Your AC Is Not Cooling Your House Properly

Living in a hot and humid region can be taxing, especially when your air conditioner isn’t working as it should. It’s understandably irritating when you turn on your air con and doesn’t produce any cold air. To avoid being in an uncomfortable situation, it’s important to identify the cause of the problem quickly. 

There are numerous potential problems—from an incorrectly set thermostat or a dirty furnace filter to more complex issues that require new components. Taking the time to investigate and fix the issue will ensure you stay cool! Here are five potential culprits behind this problem:

1. Blocked Condenser

If your air conditioner isn’t working well, it could be because the condenser unit outside your home is blocked. Check the condenser and coils to ensure they are not covered with dirt or grass. Make sure they are not too close to outdoor furniture or fences. If they are blocked, it can reduce the efficiency of your air conditioner, it is best to call a professional at Legacy Heating & Cooling. If it is damaged, it can be costly to repair.

2. Incorrect Thermostat Temperature

To ensure your air conditioner is functioning properly, check the thermostat. First, make sure the thermostat is not set to heat. Then, check to see that the temperature is set to the desired level. If the temperature is not cold enough, the air conditioner will not know how to turn it on.

3. Dirty Air Filters

If your air conditioner is struggling to work correctly, it could be because of a clogged air filter. To ensure your air conditioner runs smoothly, you should regularly check and replace the air filter. Regular maintenance on your air conditioner can also help you identify when the air filter needs to be changed before it becomes too clogged.

4. Refrigerant Leak

Your air conditioner may also have a refrigerant leak. This issue is because refrigerant allows your air conditioner to heat and cool your home efficiently. If the refrigerant level is low, you may need to add more. Also, it is essential to consult a professional at Legacy Heating & Cooling to inspect the system and determine if there is a leak. Your air conditioner will not work as efficiently without proper refrigerant, resulting in an increased energy bill.

5. Poorly Insulated Home

If your home is not properly insulated, it can cause your air conditioner to work harder than necessary to keep the temperature comfortable inside. This will lead to increased energy costs and a decreased system efficiency overall. To ensure this doesn’t happen, ensure all windows are tightly sealed so that no additional heat enters your house from outside sources like direct sunlight or drafts coming through cracks around doors and windowsills.


There are various reasons your air conditioner may not be properly cooling your house. It could be an issue with the size of the unit, lack of maintenance, or an issue with the refrigerant levels. Suppose you suspect any of these issues may be causing your AC not to cool your house properly. In that case, it is best to call a professional to take a look, as these issues can be complex and require specific tools and knowledge to diagnose and repair properly.

At Legacy Heating, we specialize in HVAC systems, particularly installing and replacing furnaces, air conditioners, air cleaners, thermostats, humidifiers, heat recovery ventilation (HRV) units, and other HVAC products! We offer the most comprehensive and cost-effective HVAC products and services in Edmonton and Calgary’s surrounding areas and pride ourselves on putting quality and customers first! If you need air conditioner services in Edmonton and Calgary, we’ve got you covered. Get in touch with us today and let us know how we can help!

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