Plumbing & Heating engineers providing design, installation and after care for OIL, LPG, natural gas, solar thermal technologies. domestic & commercial Gas Safe, Oftec & MCS accredited Heat Haus operate in Nottinghamshire, Lincolnshire, Derbyshire, London & Surrey Our Head Office is located at 15 - 19 Portland Street, Newark. Midlands: 01636 676325 London: 020 7760 7514 Established 1972