An AC that is too small never cools the room, and one too big wastes money. Enter your room size and where you live to see how many ton or BTU you need, and what it adds to the bill.
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How to use it
- Enter the room length and width, or the floor area.
- Choose where the room is: hills, Terai or Gulf.
- Set the sunlight and how many people use the room.
- Enter hours a day and the price of electricity for the bill estimate.
Example
A 4 m by 5 m room (215 sq ft) in the Terai needs about 15,000 BTU, so buy a 1.5 ton AC. The same room in Kathmandu needs about 1 ton.
Questions and answers
How many BTU is one ton?
12,000 BTU per hour, which is 3.517 kW of cooling.
Should I size up for a top floor?
Yes. Rooms under a roof, with big west-facing glass or a kitchen need more.
Does an inverter AC save money?
Yes. It usually cuts the bill by a third or more compared with a fixed-speed AC.