Central heating installation; heating equipment installation; heating equipment installation and repair; heating equipment repair; installation of apparatus for heating; installation of central heating; installation of heating apparatus; maintenance and repair of heating; air conditioning apparatus installation and repair; central heating installation; electrical installation services; heating equipment installation; heating equipment installation and repair; heating equipment repair; installation of apparatus for air-conditioning; installation of apparatus for heating; installation of apparatus for ventilating; installation of heating apparatus; installation of pipelines; maintenance and repair of electronic installations; maintenance and repair of heating; air conditioning apparatus installation and repair; heating equipment installation; heating equipment installation and repair; installation of apparatus for air-conditioning; installation of apparatus for heating; installation of central heating; installation of heating apparatus; maintenance and repair of electronic installations; central heating installation; heating equipment installation; heating equipment installation and repair; heating equipment repair; installation of apparatus for heating; installation of central heating; installation of heating apparatus; maintenance and repair of heating; repair of gas supply systems