British thermal unit, Energy
The British thermal unit (BTU or Btu) is a unit of energy used in North America. It is also still occasionally encountered in the United Kingdom, in the context of older heating and cooling systems. Read more ![]()
The British thermal unit (BTU or Btu) is a unit of energy used in North America. It is also still occasionally encountered in the United Kingdom, in the context of older heating and cooling systems. Read more ![]()