TM44 Inspection & Certificate UK
TM44 air conditioning inspection and certificate services delivered quickly across the UK by CIBSE accredited assessors.
We help organisations stay compliant with TM44 regulations while identifying opportunities to improve efficiency and reduce energy costs.
Fast and reliable inspections to help you meet compliance deadlines with minimal disruption to your business.
We provide TM44 compliance services across the UK for commercial buildings and multi-site portfolios.
- Fast turnaround available
- Flexible scheduling to meet compliance deadlines
- Reports lodged on government register
Following the inspection, we produce your TM44 report and certificate, which are lodged on the official government register as proof of compliance.
Why choose Smart GreenTech Solutions for TM44 inspections?
Smart GreenTech Solutions is an independent building performance and sustainability consultancy with a strong track record in TM44 air conditioning inspections, ESOS audits and wider energy efficiency work
Organisations choose us for TM44 because we offer:
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Accredited TM44 air conditioning inspectors
Your inspection is carried out by experienced, professionally registered engineers who understand both the technical detail and the regulatory requirements. -
Fast, reliable compliance
We plan site visits around your operations, minimise disruption and ensure reports and certificates are delivered within agreed timescales – ideal when you’re close to a compliance deadline. -
UK-wide coverage
We support clients with single buildings and multi-site portfolios across the UK, coordinating inspections to reduce cost and administration. -
Actionable energy-saving advice
Our reports don’t just repeat generic recommendations. We focus on building-specific actions that align with your budgets, maintenance cycles and long-term sustainability goals. -
Integrated support with other compliance duties
Because we also specialise in ESOS, SECR, IAQ and wider energy efficiency, we can make sure your TM44 work joins up with your broader compliance and carbon reduction strategy.
What is a TM44 air conditioning inspection?
A TM44 inspection is a statutory energy assessment of a building’s air conditioning systems, required under the Energy Performance of Buildings Regulations. The inspection assesses how efficiently your air conditioning is operating and provides recommendations to reduce energy use, carbon emissions and running costs.
The term “TM44” refers to guidance developed by CIBSE (the Chartered Institution of Building Services Engineers), which sets out the methodology and good practice for these inspections.
A typical air conditioning inspection will:
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Review the size, layout and controls of your AC system
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Examine maintenance records and documentation
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Identify inefficiencies and opportunities to improve performance
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Produce a TM44 report and certificate lodged on the government register.
We also provide a range of compliance plus optimisation services on air-conditioning and ventilation systems as indicated below;
How much does a TM44 inspection cost?
The cost of an air conditioning inspection depends on the size and complexity of your cooling and ventilation systems, as well as the number of buildings or sites involved.
Our inspections are individually priced based on:
- Number and type of air-conditioning systems (e.g. chilled water, VRV/F or split type units
- Number of chilled water Fan Coil Units/Chilled beams
- Number of central ventilation/AHU systems
- Number of heat recovery ventilation systems
- Number of buildings or sites to be inspected
- Accessibility of plant and equipment
- Location and travel requirements
Larger commercial buildings or multi-site portfolios usually require more detailed inspections and data review.
The cost of an inspection includes the TM44 report and certificate required for compliance
Who needs a TM44 inspection?
TM44 inspections apply to air conditioning systems in commercial buildings providing comfort cooling only i.e. cooling that is primarily for the comfort of human occupants.
In the case of systems that provide air conditioning for both comfort and process purposes such as data centres, it only covers those parts of the system that contributes to comfort cooling.
In practice, this means you’re likely to need a TM44 inspection if:
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Your building has a single large chiller or packaged unit with a cooling output above 12 kW, or
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You have multiple smaller air conditioning units whose combined cooling output exceeds 12 kW.
Responsibility usually sits with the building owner, landlord or the person in control of the system (for example, a tenant with full repairing and insuring responsibilities).
Failure to have a valid TM44 inspection certificate in place can lead to enforcement action and financial penalties.
If you’re not sure whether your systems are in scope or when your next inspection is due, we can quickly review your asset list and any previous or existing TM44 reports.
How often is a TM44 inspection required?
Under current regulations, all air conditioning systems with an effective rated cooling output of more than 12 kW must be inspected by an accredited energy assessor at intervals of no more than five years.
So the first inspection is due within five years from the commissioning date and then at intervals of no more than five years thereafter.
What we look at during a TM44 inspection service
During an air conditioning inspection, our accredited assessors will typically:
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Inspect refrigeration equipment (chillers, condensers, DX units)
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Review air handling units, fans and ductwork
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Check controls and thermostats, including set points, schedules and zoning
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Review maintenance records and F-gas documentation where relevant
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Assess whether systems are correctly sized for the current building use
The inspection follows the principles of CIBSE TM44, ensuring a consistent and robust approach aligned with national guidance .CIBSE.
TM44 inspection report and certificate
Following a TM44 inspection, you receive a clear and practical inspection report and certificate, confirming that your air conditioning systems have been assessed by an accredited energy assessor.
The report typically includes:
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An overview of your air conditioning systems and capacities
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Findings on condition, operation and controls
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Energy efficiency recommendations, including low- and no-cost improvements
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Suggestions for longer-term upgrades or replacements
We’ll explain the report what’s urgent, what’s optional, and where the best savings and operational improvements are likely to be found.
Typical savings and performance improvements
A well-executed TM44 inspection can help you:
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Reduce electricity consumption and cut cooling costs
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Improve comfort and indoor air quality for occupants
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Extend equipment life by optimising settings and maintenance
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Identify opportunities to support wider net-zero and decarbonisation plans
TM44 FAQs
Our Industry Accreditations & Registrations
Check out our TM44 inspection and related articles
Our articles include guidance on TM44 inspections and certificates and improving energy efficiency and indoor air quality in buildings.
Book your TM44 inspection
If your TM44 certificate is due to expire, you’re not sure whether your system is over 12 kW, or you simply want a more efficient and reliable air conditioning system, we’re here to help.
Call us: +44 (0) 3300 881451
Email:
Or: complete our short form to request a TM44 inspection quote
We’ll confirm whether you need a TM44 air conditioning inspection, provide a clear fixed-fee proposal and agree a schedule that minimises disruption to your building users, helping you stay compliant and improve performance at the same time.