What is the fine-grained topic of the following text: know how to shut off your water supply in most... Every home is unique and sizing your boiler is a complex calculation that a qualified heating engineer will help you with calculating the heat requirement involves an assessment of the size of space involved, the required temperature, the prevailing outside temperature and the heat lost through windows, doors, floors and walls. Only return the topic.
Boiler sizing and shutting off water supply in homes