How do I choose which BTU air conditioner?

What does BTU mean?  Air conditioning capacity is measured by "BTU". BTU stands for British Thermal Units. BTU is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

How many BTU Air Conditioning do I need? Follow the table below to find the approximate ideal cooling capacity (btu) Eco-Air air conditioner for your room:

Cooling Capacity *
9,000BTU 12,000BTU 18,000BTU 24,000BTU


Shaded room N/E facing
( Split Air Conditioning )

26 sq meter
(279 sq feet)

35 sq meter
(376 sq feet)

50 sq meter
(538 sq feet)

60 sq meter
(645 sq feet)

What does BTU mean?


  Sunny room S/W facing & conservatories
( Portable Air Conditioning )

16 sq meter
(172 sq feet)

21 sq meter
(226 sq feet)

35 sq meter
(376 sq feet)

42 sq meter
(452 sq feet)

The above recommendations are estimates based on Eco-Air's air conditioning units only.

Buy > Split Air Conditioning
Buy > Portable Air Conditioning

How to convert BTU/ Hour to Watt ?
1 BTU/hr = 0.293071 W

1000 BTU/hr = 293.071039 W