In England and Wales, qualifying air-conditioning systems with effective rated output exceeding 12 kW generally require periodic inspection by an appropriately accredited energy assessor. A professional survey helps establish scope, but it is not a legal guarantee or proof that unrelated building obligations are satisfied.
What you need to know
- Confirm equipment capacity and control boundaries before treating a premises as in or out of scope.
- Check the actual assessor accreditation and report deliverables rather than relying on a marketing certificate claim.
- Prepare plant access and previous reports before the visit; document areas that cannot be inspected.
- Retain correct building and system evidence and plan the next interval from real inspection dates.
Identify the actual air-conditioning installation
A premises can have chillers, VRF systems, split units and tenant-installed equipment operated under different controls. An EPC band, floor area or the mere presence of cooling equipment is not enough to establish the precise statutory duty.
Check genuine effective rated cooling output and the relevant person. Smaller units may need grouping under the correct England and Wales framework; do not double-count indoor and outdoor components of the same system.
Understand eligibility and the 12 kW thresholdVerify the assessor before confirming attendance
A statutory TM44 assessment must be performed by an appropriately accredited air-conditioning energy assessor, within the assessor's authorised scope. Routine servicing, F-Gas qualification or general engineering experience alone do not demonstrate statutory energy-assessor accreditation.
Ask the provider to clarify who will assess the installed plant, who prepares the report, and how applicable official lodgement is handled. A quote request alone does not reserve an assessor.
Check assessor qualificationsPrevent incomplete plant access and scope errors
Arrange safe access to rooftop equipment, plant rooms, controls and relevant operational information. Multi-tenant and specialist facilities may require escorts, inductions or restrictions around essential cooling.
If plant cannot be accessed safely, record the limitation rather than implying a complete inspection. An independent service contractor's maintenance sheet does not substitute for the accredited report.
What happens on a TM44 inspection visit?Check existing and registered documents
Compare the report's address, assessed systems, inspection date and accredited assessor details with the actual premises. A registered reference can support verification but does not automatically show that later replacement or tenant equipment was inspected.
A missing postcode search result does not prove that a building has never been inspected. Keep uncertainties explicit until a document and system-level review is complete.
Follow the official certificate-checking processUnderstand inspection timing and responsibility
For qualifying systems in England and Wales, the periodic inspection interval must not exceed five years. A change in the person responsible for a system can create additional obligations where a valid inspection report is not handed over.
The applicability of the three-month handover provision depends on the circumstances. Scotland and Northern Ireland require jurisdiction-specific review rather than being assumed to follow identical requirements.
Commercial building handover ruleRequest a properly documented quotation
Provide the building location, system details if known, any existing report, site contact and real deadline. An accurate quotation distinguishes assessed plant, excluded systems, access arrangements, report deliverables, VAT and any special attendance costs.
A TM44 energy inspection does not replace repairs, refrigerant checks, EPCs or fire-safety obligations. Specialist subcontractor work must be agreed and qualified separately.
Request a TM44 inspection quotationCheck the governing guidance
This article does not authenticate a government register entry or establish the status of an individual building. Confirm the applicable national framework and the actual installed equipment before relying on a compliance conclusion.
England and Wales legal points are anchored in current government publications and the regulations. Technical applicability for a specific building still requires its actual system information.