In 1996 it became a legal requirement for Landlords to ensure that any rental property has a Landlord Gas Safety Certificate carried out annually, on all gas appliances. Landlords must ensure that all gas appliances and flues fitted in any property have an annual landlord gas safety check by a gas safe registered engineer. As with most modern conveniences, the luxury of modern day air conditioning arises from the demands of past commercial requirements. It’s not a terminator of people, but rather a terminator of rising energy costs. In the pre-1960s, the acquisition of retail, industrial or commercial air conditioning equipment involved a serious balance between expense and the practical relationship between the goods or services being delivered.