The fact that air conditioning systems have a considerable impact on the quality of life is something that is often taken for granted. Being a significant investment, choosing the right AC system must involve careful planning. Before purchasing, the installer needs to know how big or how small the unit should be. It means calculating the cooling and heating capacity needed to keep the occupants comfortable. This is referred to as the load. 

Load Calculation 

An accurate load calculation goes beyond calculating the square footage of the property. Accurate calculations are determined by the orientation to the sun, building construction, the “R” insulation value, size and the placement of the rooms, including window and door placements, thermal efficiency of the doors and the windows, the arrangement of the floors and the climate. 

Failing to determine the full load always leads the purchase of an oversized unit. This then results in increased monthly utility bills, initial cost, maintenance, and a short life for the system. Your contractor should help you perform the calculations. 

The wall-mounted system is the most common AC type. It is considered the easiest to install and the cheapest fitted air conditioning option available. Wall mounted air conditioning units offer both effective heating and efficient cooling effects. Wall mounted systems are ideal for smaller areas such as the living room, shops, server rooms and bedrooms. 

Noise Levels 

Most modern split systems are quiet, but it is critical to check the noise levels of the AC you intend to purchase. Noisy systems can interfere with conversation, sleep and other activities. Most residential areas have noise restrictions related to air conditioners. Check the local regulations before making a purchase. 

Features to Consider 

Operating Modes 

• Auto: Auto chooses the mode needed for a space to stay at a certain temperature 
• Economy: Eco-mode reduces power consumption 
• Fan only mode: If all you need is a cooling breeze, this is the perfect mode. It leaves a comfortable atmosphere without drying or cooling. 

Remote Control 

Consider large well-spaced buttons. The labels should be legible and feature a large LCD. 

Restart Delay 

This protects the compressor by stopping the AC from starting again too soon after it has been switched off. 

Human Presence Sensor 

This feature detects when there is someone in the room. With it, the unit knows when to work. There are models that direct the air movement to the sensed person. The unit then goes into a hibernation mode if the room has no one to reduce the consumption of power. 

Air Filters and Self Cleansing 

Air filtration systems get rid of bacteria and other allergens present in the air. The self-cleansing function of the AC keeps the unit dry from the inside. This reduces dust build-up and mould growth. 

An efficient AC is vital to keeping your home comfortable. Efficiency ratings are determined based on their Seasonal Energy Efficiency Ratio (SEER). A higher number means the system has high energy efficiency. Upgrading to such an AC can greatly reduce your energy bills. Choose a SEER that is not less than 16.