7 Common Aircon Installation Mistakes To Avoid

Although, operating an aircon looks very simple, but it’s a complex machine that relies on the proper functioning of various components. Therefore, minor mistakes in the aircon installation can severely affect its working. Here are the seven common mistakes that you should avoid during installation of an aircon.

1. Improperly Sized System
Installing an oversized aircon system can result in improper humidity control, high operational costs, and uncomfortable temperature changes. However, if the system is undersized then you won’t get sufficient cooling, will get high energy bills, and equipment would have shorter life span. Therefore, before installing the aircon, it’s important to contact a reputable aircon contractor and run a proper load circulation. Technicians of the contractor will visit your property and will take a measurement of windows, ceiling, floors, walls, etc. They will check for insulation and consider other factors, before determining the cooling capacity needed for your home.

2. Wrong Positioning of Aircon 

Installing the aircon in the right position is highly important, as it can influence its energy efficiency. Place your aircon in a shady location, so that it doesn’t have to work harder for cooling your home. When installing window AC, make sure that it’s slightly tilted towards back, which will allow proper drainage. Installation of aircon in a shady location is good, but make sure that it isn’t blocked by trees and shrubs. Proper ventilation is important for efficient operation of your aircon, and it will make sure that the energy bill remains minimum. 

3. Improper Insulation

Proper insulation of the room is an important factor. In the case of a window AC, it’s important that the open areas between the top and bottom window panes are filled with insulating foam. There are special insulation panels available for window AC, which provide better insulation. For split-ACs, it’s important to install right sized ducts. The size of the duct is calculated on the basis of load circulation and any mistake can result in improper efficiency of the cooling system and early equipment failure. Improperly sealed ducts also create problems as they result in leakage of cooled air and thus increasing the work-load on the AC unit.

4. Wrong Positioning of Thermostat

Always make sure that the thermostat is not near the lamps or any other heat generating appliance. If thermostat is constantly exposed to heat then, your energy bills will increase because your aircon would work for extra time. Over-working of aircon will result in improper cooling, unhealthy humidity levels, and increase in maintenance costs. Additionally, over usage of the aircon will reduce its lifespan.

5. Poor Indoor Air Quality

Pollution in the indoor air is a major problem, which can reduce the efficiency of your aircon. There are several things in your home that can cause indoor air pollution like mold, carpets, pollen, resins, mildew, etc. The pollution in the indoor air can get aggravated if it’s doesn’t get adequate air circulation and is exposed to high humidity. These pollutants can affect the working of an aircon and impact its overall performance. However, by choosing a reputable contractor you can easily fix this problem because they will advise you about the steps you need to take for reducing the pollution inside your home. Additionally, a contractor can advise you about other equipment, which will further help you in eliminating the air contaminants.

6. Not Checking For Leaks

When doing aircon installation it’s important to check for the level of coolant or Freon level in the aircon system. Any leakage can cause many health problems, and only 10 percent loss of Freon or coolant can result in 20 percent extra electricity bills. Many times installers don’t check for leakage because they think it’s a new aircon system, but sometimes system is damaged during installation, which can cause leakage.

7. Choosing the Wrong Contractor

There are many people who are not comfortable with installing aicons. Therefore, they choose to hire professionals who can complete the job for them. However, while selecting a professional contractor they make the mistake of choosing the professional that is asking for lowest rates. You must know that a poorly trained professional will make an improper aircon installation, and can also damage your windows or aircon equipment during the installation. Therefore, it’s important to choose the installer after proper enquiry and not just go for the cheapest service provider. 


The most common mistakes that usually happens during aircon installation are mentioned above. If you don’t avoid these mistakes then you will end up paying extra money in energy bills, will get inefficient cooling, and the lifespan of your system will get reduced. However, you can easily avoid these mistakes by hiring a reputable contractor.

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