R290 is an energy-efficient refrigerant, an eco-friendly alternative with zero ozone depletion potential (ODP). R290 does also not require installation by an F-Gas certified engineer, whereas R32 requires installation by an F-Gas certified engineer. Multi split air cons connect a number of indoor units to one outdoor unit, to cool more than one room while saving space and running costs. Single room split air con units have one indoor unit connected to an outdoor system. Air cons with no outdoor unit are vented straight through the wall, making them perfect for anywhere outdoor space is difficult to access. BTU is the amount of heat required to raise the temperature of one pound of liquid water by one degree from 60° to 61° Fahrenheit at a constant pressure of one atmosphere.

A home gas stove will typically put out about 7,000 BTU per hour, but some models will put out as low as 3,000 BTU and as high as 12,000 BTU. Use our handy calculator, which will help you figure out exactly what size of unit you require for your When you use an air conditioner that is too large for the area it is cooling, you will find that the compressor will need to turn on and off much more than it is designed to. The higher end of the cooling capacity of an average aircon, a 12,000 BTU aircon can cool a room or space that is between 45 to 50 metres square, which is around 500 square feet to 550 square feet.If you will only be using your air conditioner occasionally, or if you want to be able to move it from room to room, a portable air conditioner is the wiser choice. However there are good reasons for choosing wall-mounted air conditioners.

This portable air cooler would be enough for cooling a garage, conservatory, kitchen, or small studio apartment.

Calculator

Wow! You can easily calculate the electricity running cost of any device using our calculator at the end of this article! A common misbelief is that for a small room, a larger BTU (or capacity) will be better. Instead, choosing an excessive BTU will bring more cost and less cooling. A larger air-conditioning unit may be more cooling at the start, but it will not sustain in the long run as it is unable to draw moisture and humidity from the room. As a result, the initial feeling of cold air will soon falter as you will feel no difference in moisture. Contains everything you need for installation, does not require installation by an F-Gas registered engineer or specialist equipment A BTU (British Thermal Unit) is a rating used to determine the heating or in the case of an Air Conditioner the cooling capacity of an appliance.