What is a Calef? Understanding the Unit of Measurement for Heat Energy

Calef is a unit of measurement for the amount of heat energy required to raise the temperature of one pound of water by one degree Fahrenheit. It is defined as 1,000 British thermal units (BTUs) and is commonly used in the heating, ventilation, and air conditioning (HVAC) industry.

One calef is equivalent to 1,000 BTUs, which is a measure of the amount of heat energy required to raise the temperature of one pound of water by one degree Fahrenheit. This unit is often used to express the heating capacity of a system or appliance, such as a furnace or boiler.

For example, if a furnace has a heating capacity of 50,000 BTUs, it would be equivalent to 50 calefs. This unit is commonly used in the HVAC industry to compare the heating capacities of different systems and to determine the appropriate size of a system for a particular application.