British thermal unit

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British Thermal Unit

The energy needed to raise the temperature of one pound of water one degree Fahrenheit. It is used in the United Kingdom, the United States, and a few other countries to measure the energy used by appliances like heaters and air conditioners. In the metric system, the equivalent of the British thermal unit is the joule. It is abbreviated BTU.

British thermal unit (BTU)

A unit of measure of heat,used in rating the capacity of air conditioning and heating equipment.One BTU is the amount of energy necessary to raise the temperature of 1 pound of water by 1 degree Fahrenheit.
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The Energy Star emblem is on 37 machines, including the new Compact Programmable series, 5,000 to 12,000 BTUs, with remote electronic controls.
But a BTU tax is a lot simpler in theory than in execution.
As a source of revenue in the Clinton plan, the BTU tax would be second only to the proposed changes in personal income tax rates.
Fedders' line, 5,000 to 32,000 BTUs, comes with more electronics and less bulk.
Five portables from 7,500 to 8,300 BTUs electronically control air conditioning, dehumidifying, fan operation and electric heating.
Goldstar has 10 mechanical and about seven electronic units, each from 5,200 to 24,000 BTUs, and three heat-cool devices from 10,000 to 18,000 BTUs.
A ZQ entry-level unit goes from 5,000 to 5,200 BTUs.
Sleep settings are among the quiet improvements on everything from 8,000 to 18,000 BTUs, and on a 21,000-BTU model.
LG Electronics is expanding its Goldstar line with the R-1400, 13,800 BTUs and 10.
5 EER, and the GAS18EY2A, 18,000/17,600 BTUS and 9.
Fedders' Whisperer mid-frame series consists of two cooling units and one heat-and-cool from 12,000 to 17,500 BTUs.
Capacities span from 5,400 to 20,500 BTUs and energy-efficiency ratings run from 8.