JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.
03445 044 499 - We Are Open Mon-Fri 9am – 5.30pm
Short for British Thermal Unit, British standard unit of energy. One Btu is equal to the amount of heat required to raise the temperature of one pound of liquid water by 1 degree Fahrenheit at its maximum density, which occurs at a temperature of 39.1 degrees Fahrenheit.
One Btu is equal to approximately 251.9 calories or 1055 joules.