People often measure the comfort in a building by the indoor temperature. Therefore it is important to know if enough heat is generated and if too much heat is not lost. Henco has developed a handy tool to calculate the heat loss. Please fill in the requested data below. Then fill in your email address and press the Send button. The result will also be sent to your mailbox so that you can consult the result at a later time. If the heat loss is too high, adjust the values in the fields and calculate the heat loss again.