Who Needs a TM44 Inspection? Understanding Your Legal Obligations

Who Needs a TM44 Inspection? The Basic Rule

Who needs a TM44 inspection? Any building containing air conditioning systems with a combined effective rated output exceeding 12kW — the legal requirement applies regardless of building type, location, or ownership structure. The obligation stems from the Energy Performance of Buildings Regulations 2012, which exist to reduce energy consumption and carbon emissions from commercial buildings. A certificate must be held at all times and renewed at least every five years.

The 12kW threshold refers to the total combined cooling capacity — not individual units. Two or three split systems serving different areas of the same building may together exceed 12kW and trigger the requirement. Many building managers are surprised by how quickly modest installations reach the threshold. Read our full TM44 explained guide for more background.

Who Needs a TM44 Inspection? Sectors and Building Types

Offices

Modern office buildings almost universally need a TM44 inspection. Open-plan offices with ceiling cassettes, server rooms with dedicated cooling, and reception areas with split systems all contribute to the total capacity. Whether a single professional services firm or a multi-floor corporate headquarters, office AC systems routinely exceed 12kW.

Retail and Hospitality

Retail units from high street shops to large supermarkets, hotels, restaurants, bars, and conference venues all typically need a TM44 inspection. Each of these environments depends on climate control that frequently exceeds the 12kW threshold.

Industrial and Warehousing

Industrial premises often need a TM44 inspection despite operators not expecting it. The main warehouse may lack air conditioning, but office areas, quality control laboratories, and temperature-controlled storage zones commonly contain systems that combined exceed the threshold.

Education and Healthcare

Schools, colleges, and universities increasingly need a TM44 inspection as air conditioning becomes standard in IT suites, libraries, and administrative buildings. Hospitals, GP surgeries, dental practices, and care homes maintain precise temperature control for clinical requirements — NHS trusts must ensure TM44 compliance across their entire estate.

Leisure and Entertainment

Leisure centres, gyms, cinemas, and theatres all rely heavily on air conditioning — almost always exceeding 12kW. Anyone managing these facilities needs a TM44 inspection.

Specialist Facilities

Data centres, laboratories, pharmaceutical facilities, and food processing plants use intensive cooling that clearly falls within TM44 scope. These operations unambiguously need a TM44 inspection on a regular cycle.

Who Needs a TM44 Inspection? The Domestic Exemption

Private residential properties are exempt — if you have air conditioning in your home, no certificate is required. However, blocks of flats with communal air conditioning serving common areas do need a TM44 inspection. The freeholder or management company responsible for common parts must ensure compliance. Individual flat owners remain exempt for private AC within their own units.

Mixed-use buildings require careful assessment. The commercial portions are in scope; the residential portions are not. Building managers must establish which systems serve which areas.

Who Needs a TM44 Inspection? Landlord vs Tenant Responsibility

Who needs a TM44 inspection in a leased building depends on who controls the air conditioning. The regulations place the obligation on the person in control of the system — not necessarily the owner.

• Landlord typically responsible: communal systems serving multiple tenants, base building AC installed before letting, central plant rooms, systems in common areas
• Tenant typically responsible: systems installed as part of their own fit-out, supplementary cooling for specific uses, any AC within their demised area where the lease explicitly transfers compliance obligations

Many older leases predate current regulations and are silent on TM44. Where genuine uncertainty exists, both parties should seek documented clarification — never assume the other party is handling it.

New Buildings and New Systems

Newly installed systems do not need a TM44 inspection immediately — the first assessment falls due within five years of commissioning. Property developers should include TM44 timing in handover documentation so purchasers and tenants understand when they will first need a TM44 inspection.

Enforcement and Penalties

Trading Standards authorities enforce TM44 requirements and may request evidence of current certification. Non-compliance carries penalties of up to £300, plus reputational risk, insurance complications, and delays to property transactions. If you receive an enforcement notice, arranging an inspection quickly demonstrates good faith and typically resolves the matter.

Checklist: Do You Need a TM44 Inspection?

1. Does your building have air conditioning? If no — TM44 does not apply.
2. Is it exclusively residential? If yes — you are exempt.
3. Does combined AC output exceed 12kW? If yes — you need a TM44 inspection.
4. Are you the owner, or does your lease transfer compliance to you? If yes — arrange the inspection.
5. Has more than five years passed since your last inspection? If yes — you need one now.

Case Study: Avoiding Assumptions

A healthcare provider took new premises in Teesside, assuming the landlord maintained all necessary certifications. The lease transferred responsibility for compliance with all applicable regulations to the tenant — but neither party had discussed who needs a TM44 inspection specifically.

Two years in, an insurance surveyor requested the current certificate. The landlord confirmed it had expired before the lease started. The surveyor flagged the absence, creating complications at insurance renewal. AirCert completed the inspection within days, the certificate was issued, and the tenant now maintains their own compliance calendar. A brief conversation at lease signing would have prevented the entire situation.

Find Out Whether You Need a TM44 Inspection

If you are unsure whether your building needs a TM44 inspection, or need to establish who holds responsibility in your specific circumstances, AirCert will advise you clearly and without obligation. Based in Middlesbrough, covering the entire North East and Yorkshire with Elmhurst Level 3 and Level 4 accreditation.

Get in touch today — we respond the same working day.