Domestic or commercial, Heating and hot water systems, Boiler servicing, Gas connection, boiler installations, For landlords and property agents CP12 (Landlord) inspections.All engineers employed by TJB Heating Services are gas safe registered and Check a Trade approved. Whether it’s an emergency or planned service, your equipment gets the same specialist attention. Our engineers are routinely vetted and have to sustain their accreditation to work in the profession.