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Air conditioner placed incorrectly over a TV.

Getting your air conditioner placement wrong can cost more than you think. From uneven temperatures to rising energy bills, small positioning mistakes can have a big impact on comfort and efficiency. Here are the most common air conditioner placement issues homeowners face and how to avoid them.

Poor Outdoor Unit Placement – Split Systems 

The outdoor unit, or condenser, mustn’t be obstructed to release heat properly. If it is installed too close to walls, fences, plants, or other outdoor equipment, hot air can become trapped instead of dispersing. This forces your air con to work harder to cool or heat your home, which can increase running costs and breakdown risk, and reduce performance over time. Research has shown that airflow restrictions around an outdoor air conditioning unit can significantly reduce performance. In one study, placing an obstruction just 10 cm in front of the outdoor unit increased power consumption by 31% and reduced cooling capacity by about 46%. 

Air Conditioner Placement Above Heat Sources 

Installing systems above heat sources is a costly air conditioner placement mistake that many homeowners overlook.  

When units are positioned too close to:  

  • TVs or other electronic devices 
  • Lamps 
  • Direct sunlight 

they detect incorrect temperature levels leading to excessive energy use. The best placement for air conditioner units avoids artificial heat zones, allowing sensors to read the room accurately. This also helps maintain efficiency, improves performance, and keeps running costs low year-round. 

How Ventilation Impacts Air Con Performance 

Good indoor ventilation helps your air conditioner move cooled or heated air evenly throughout the room. If your system is installed too close to walls, furniture, curtains or enclosed spaces, air cannot circulate properly. Keeping the area around the indoor unit clear allows air to flow freely through the space, reducing the time needed for your system to reach its desired temperature. 

Poor Ducted System Outlet Placement 

Poor outlet placement can undermine the performance of even the best ducted air con systems. When air con outlets are positioned too close together, blocked by furniture, or placed in low-use areas, airflow becomes uneven and inefficient. This often leads to hot and cold zones and forces the system to overwork to compensate. Over time, this strain can also increase the likelihood of needing a repair.  

Why Professional Installation Matters 

Before installing a system, LCM’s Air Conditioning’s experienced technicians assess key factors such as: 

  • room layout  
  • airflow patterns  
  • heat sources  

Which help determine the best placement for high quality performance. Poor DIY decisions during air con installation can lead to inefficiency, higher running costs, and uneven temperatures.  

LCM Air Conditioning ensures every component is positioned correctly from the start, helping your system run efficiently, last longer, and deliver consistent cooling and heating throughout your home.  

 

Need a new air conditioner installed at home? Contact LCM Air Conditioning today for honest advice and quality service.