Aircon Installation FAQ
- Consider the areas required for air conditioning.
- Consider the cooling space and power required.
- Determine the brand and type of aircon you desire. For example, the aircon servicing efficiency.
- Consider your budget.
Generally, use the simple equation below to calculate the amount of power required for a room/space:
Area (length x breath) x 65 = BTU/hr
Example: Room (10 ft x 10 ft) x 65 = 6500BTU/hr
Take the BTU/hr and multiple it with 0.000293 to convert it to KWh (energy unit used in Singapore utility system)
This means that in 1 hour, aircon will require 6500BTU of energy which is about 1.9KWh (6500 x 0.000293) of energy.
A window unit, as its name suggests, are a single unit that is installing in any wall or window opening. All the components required for the aircon to function is packaged in it. Hence, no piping in required for its installation. A split unit consists of an outdoor (external) compressor unit and an indoor (internal) fan coil. The fan coil unit (FCU) helps to cool the room while the external compressor cools the surrounding air and provides it to the FCU. Hence, piping is required for installation. A multi-spilt unit consists of an outdoor compressor and more than 1 FCU. It enables cooling of multiple rooms simultaneously.
Generally, the two main key differences between a window unit and a split/multi-spilt unit are:
- Window unit requires more electricity to operate, hence are generally incur a higher monthly electrical bill.
- Because of the way a window unit is designed, it generates more noise during operation.