Plumbing services; electrical installation services, electrical wiring services, electrical engineering services (construction), electrical services being maintenance and repair of electrical apparatus; air conditioning services being installation and repair of air conditioning apparatus; heating services being heating equipment installation, heating services being heating equipment repair and maintenance; hot water services being hot water equipment installation, hot water services being hot water equipment repair and maintenance; gas services being installation, maintenance and repair of gas installations and equipment, gas services being drilling of gas wells; gas fitting services being fitting services for gas installations; maintenance and cleaning services.