CareHomeDeskCareHomeDeskAll gas work in a care home must be carried out by a Gas Safe registered engineer who also holds the specific ACS modules for the work being done.
Being on the Gas Safe Register confirms an engineer has met the required competence standard to work on gas, but registration is broken down into specific categories of appliance and installation type, each backed by its own Accredited Certification Scheme (ACS) assessment. An engineer registered for domestic natural gas boilers is not automatically qualified to work on commercial catering equipment, commercial boiler plant, or LPG systems -- each of those requires a separate ACS module and a corresponding entry on the engineer's registration.
Care homes typically operate commercial-scale plant -- larger boilers, commercial kitchen gas equipment, sometimes LPG for off-grid sites -- rather than the domestic-scale appliances most residential gas engineers are qualified for. Instructing a domestic-qualified engineer to work on commercial equipment because they are Gas Safe registered, without checking the specific category, is a common and easily avoided error that leaves the work outside the engineer's competence and the operator exposed under the Gas Safety Regulations.
The engineer's Gas Safe ID card lists the specific categories they are qualified and registered for, and this should be checked against the actual equipment being worked on before every job -- for example CODNCO1 for domestic natural gas, or the relevant commercial catering and commercial core modules for kitchen equipment. If the equipment on site is commercial catering, LPG, or non-domestic boiler plant, the card must show the matching category, not just a general Gas Safe registration.
Work carried out by an engineer without the correct ACS category for that equipment is not valid for the purposes of the Gas Safety Regulations, even though the engineer is genuinely Gas Safe registered for other categories. This can invalidate the resulting CP12 or service record, since the check was not carried out by someone competent for that specific appliance, and it may also void manufacturer warranties on commercial-grade plant that require installation or servicing by an appropriately qualified engineer.
Rather than checking qualifications job by job under time pressure, maintenance teams should maintain an approved contractor list that records each engineer's specific ACS categories alongside their Gas Safe licence number, reviewed periodically since categories can change. When commissioning work on equipment outside the categories already confirmed for a contractor -- for example moving from boiler work to catering equipment -- treat it as a new verification, not an extension of trust from previous jobs.
CareHomeDesk gives you compliance checklists, maintenance logs, and contractor management tools built around exactly this kind of knowledge.