Mylocalgasman operates in the west midlands including; stoke-on-trent, staffordshire, cheshire, shropshire and derbyshire! with almost 20 years of experience behind us we pride ourselves on our expert knowledge and highest levels of customer service. Water heater repair and installation. A small house, flat or apartment would typically require a combi boiler output between 24 & 27kw. You can call our north west depot on. The number can be found on the front of your shoppers club card.