Stay compliant with TM44 requirements through professional, independent TM44 inspections from ACI Reports. Our accredited nationwide energy assessors help commercial and non-domestic clients assess the efficiency of their air conditioning systems, meet their legal obligations, and receive clear, actionable recommendations to improve performance.
TM44 Inspections at a Glance
Do You Need a TM44 Inspection?
- If your building has air conditioning systems with a combined effective cooling capacity of 12kW or more, you're likely required by law to arrange a TM44 inspection every 5 years.
- The requirement forms part of the EPBD and helps building owners and managers understand how efficiently their air conditioning systems are operating.
- As well as confirming compliance, the inspection identifies opportunities to reduce unnecessary energy consumption and improve overall system performance.
- TM44 requirements apply to offices, retail premises, healthcare facilities, educational buildings, industrial sites, and other non-domestic properties that rely on air conditioning.
- Failure to comply with TM44 regulations can result in financial penalties, so it's important to arrange your inspection before your current TM44 report expires.
- If you're unsure whether you need a TM44 assessment, our team can help determine whether an inspection is needed before arranging a convenient survey date.
ACI Reports has a team of accredited energy assessors ready to inspect your air conditioning systems anywhere in the UK. Contact us today for a competitive quotation and straightforward compliance support.
Our TM44 Inspection and Compliance Process
1. Request Your Quote
Tell us about your building, air conditioning systems, and locations. We'll provide a clear quotation based on your requirements.
2. Book Your Inspection
Once you're happy to proceed, we'll arrange a convenient inspection date and assign a dedicated Booking Coordinator to manage the project.
3. On-Site Air Conditioning Inspection
An accredited air conditioning inspector will visit your premises to assess your air conditioning systems. The TM44 inspection is non-invasive, meaning equipment can usually remain operational during the survey. The energy assessor will review system efficiency, controls, maintenance arrangements, equipment suitability, and overall operation.
4. Report Preparation
Following the inspection, your assessor prepares your detailed TM44 survey report, including observations, findings, and practical recommendations to improve energy efficiency and support future air conditioning maintenance.
5. Government Registration
We'll upload your completed air conditioning inspection report to the official TM44 register. This is a government database open for any user to access, operated by the Department for Levelling Up, Housing and Communities (DLUHC). We’ll ensure your inspection meets the required legal process and that all reports are professional and accessible.
6. Ongoing Compliance
Your TM44 certificate and report remain valid for 5 years. We'll help you keep track of future inspection dates so you can continue meeting your compliance obligations. Our specialists also offer support with managing legislation, fines, and ISO audits when needed.
What Does a TM44 Report Include?
Every TM44 report provides a detailed assessment of your air conditioning systems alongside practical guidance to help improve performance and maintain compliance.
Equipment Efficiency
An assessment of how efficiently your systems are operating and the effectiveness of your operational regimes.
Maintenance Review
A review of current servicing and air conditioning maintenance arrangements to identify opportunities for improved performance.
System Suitability
An evaluation of whether your existing air conditioning systems remain appropriately sized for the building and its current use.
Identified Faults
Identification of any issues affecting the air conditioner's condition, such as faulty equipment, incorrect settings, or ageing systems.
F-Gas Observations
Where applicable, an independent review of F-Gas compliance, including observations and advice relating to current legislation.
Practical Recommendations
Clear, impartial recommendations to help optimise air conditioning sustainability, energy consumption, and operating costs.
Contact ACI Reports today for a competitive TM44 quotation and straightforward compliance support.
TM44 Inspection Cost
The cost of a TM44 inspection depends on several factors, including the size of your building, the number of air conditioning systems, the complexity of the site, and the number of locations requiring inspection. If you're unsure what information we need to provide a quotation, our team will be happy to guide you through the process.
We will then provide a clear quotation before any work begins, so you'll know exactly what's included. Whether you need a TM44 assessment for a single commercial property or a nationwide portfolio, we'll tailor our service to your requirements and help you achieve compliance as efficiently as possible.
Real-World Savings from TM44 Inspections
Beyond compliance, a TM44 inspection provides valuable insight into air conditioning system performance, helping organisations improve energy efficiency and identify ways to minimise operating costs. For one leading university, our recommendations highlighted significant opportunities to optimise the operation of a campus building's systems.
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Before: |
£25,458 per annum |
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After: |
£9,397 per annum |
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Annual saving: |
£16,061 per annum |
While every building is different, these opportunities can quickly scale across larger estates and multi-building portfolios, particularly where systems have become outdated or are no longer aligned with how the building is used.
Why Choose ACI Reports?
Meeting your TM44 requirements starts with choosing an experienced, independent provider you can trust. Since 2009, ACI Reports has built a reputation for delivering reliable TM44 inspections, combining technical expertise with responsive service to help organisations across the UK meet and exceed regulatory requirements.
Trusted TM44 Experts
We've delivered TM44 surveys for organisations across the UK, Ireland, and Europe since 2009. Our Level 4-qualified energy assessors – the highest qualification in the industry – support everything from individual commercial buildings to complex multi-site portfolios.
Impartial Surveys
As independent air conditioning inspectors, we're not influenced by M&E companies responsible for maintaining your systems. Our advice is always impartial, helping you improve air conditioning sustainability, reduce operating costs, and make informed decisions with confidence.
Actionable Reporting
Managing multiple TM44 reports can be time-consuming, especially across large property portfolios. We offer an optional Condition Summary Report, presenting the key findings and recommended actions in a clear, concise format that's easy to understand and prioritise.
A Client-First Service
From your first enquiry through to your completed TM44 survey report, you'll have a dedicated Booking Coordinator managing the process. Our non-invasive inspections are designed to minimise disruption while keeping communication simple at every stage.
Trusted by Major Organisations
Leading organisations choose ACI Reports for dependable TM44 inspections. Read about how our work with ISS supported compliance across RBS and NatWest branches nationwide while identifying opportunities to optimise sustainability and operating costs.
Investing in Industry Standards
We're committed to maintaining the highest standards across our industry. Through our established APEL training programme, we develop skilled M&E engineers and EPC assessors into future TM44 specialists who go on to join the ACI Reports team.
Accreditations
Whether you're responsible for one commercial property or a nationwide estate, ACI Reports is ready to help. Contact our experienced team today for a quotation and straightforward compliance support.
Meet Our Assessors
Our TM44 inspections are carried out by accredited assessors with extensive experience inspecting commercial air conditioning systems across the UK. Every assessor is qualified to Level 4 and provides professional, impartial advice that supports compliance with the Energy Performance of Buildings Directive (EPBD). Backed by dedicated project support and robust quality management processes, our team delivers consistent, high-quality inspections for portfolios of every size.
Industries We Serve
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Commercial offices |
Education |
NHS and healthcare |
Local authorities |
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Retail and hospitality |
Industrial |
Logistics |
Property management |
Request a Quote
FAQs About Air Conditioning Inspections (TM44)
What is TM44 air conditioning?
TM44 air conditioning refers to the legal inspection process for qualifying air conditioning systems in the UK. A TM44 inspection assesses the energy efficiency, performance, and environmental impact of systems with a combined effective cooling capacity of 12kW or more to support compliance with the Energy Performance of Buildings Directive (EPBD). The inspection must be completed by an accredited energy assessor who is registered with an approved certification body.
What is a TM44 inspection?
A TM44 inspection is a professional assessment of the air conditioning systems within a commercial or non-domestic building. The inspection evaluates system efficiency, maintenance arrangements, controls, and overall suitability before a formal TM44 report is produced. The completed air conditioning inspection report is then lodged on the official TM44 register.
Who needs a TM44 inspection?
In most cases, owners or managers of commercial buildings with air conditioning systems that have a combined effective cooling capacity of 12kW or more are legally required to arrange a TM44 survey. If you're unsure whether your building meets the TM44 requirements, our team can help determine whether an inspection is required.
How long does a TM44 inspection take?
The length of a TM44 survey depends on the size and complexity of your building and the number of systems being assessed. Smaller properties may take only a few hours, while larger or multi-building sites can take longer. We'll provide an indication of the expected timescale when arranging your inspection.
How often is a TM44 required?
An independent TM44 assessment must normally be completed every 5 years for qualifying air conditioning systems to remain compliant with current TM44 regulations.
How long is a TM44 valid for?
Your TM44 certificate and report remain valid for 5 years from the inspection date. Before the 5-year period expires, you'll need to arrange a new inspection to maintain compliance.
What is the 12kW rule?
The 12kW rule refers to the cooling capacity threshold set out within the TM44 inspection requirements. If the combined effective cooling capacity of the air conditioning systems serving your building is 12kW or greater, you will generally require an inspection.
Can multiple units be combined in a TM44 inspection?
Yes. The cooling capacity of multiple air conditioning units serving the same building can be combined when determining whether the 12kW threshold has been reached. Our team can advise on how the TM44 requirements apply to your specific building.
Can the TM44 inspection identify energy savings?
Yes. One of the key benefits of a TM44 assessment is identifying practical opportunities to improve efficiency. Your survey report includes independent recommendations that may help reduce energy consumption, improve air conditioning sustainability, and support lower operating costs.
Is a TM44 survey disruptive?
No. Our TM44 surveys are non-invasive, so equipment usually remains operational throughout the survey. We don't normally remove covers or shut systems down, allowing inspections to take place during normal business hours with minimal disruption. All we require is some basic information, floor plans, and a responsible person to stay with us whilst on site.
Who can carry out TM44 inspections?
Only an accredited, independent registered TM44 assessor can carry out a compliant TM44 evaluation. The assessor must belong to an approved certification scheme and remain independent of the organisation responsible for maintaining the systems being inspected.
Can TM44 assessments be completed outside office hours?
Where site access or operational requirements make this necessary, we'll always do our best to accommodate suitable inspection times. Please discuss your requirements when requesting a quotation.
How quickly will I receive my TM44 report after inspection?
Following your air conditioning inspection, we'll prepare your report and complete the necessary registration process as quickly as possible. Timescales can vary depending on the complexity of the building and the size of the inspection.
Do I receive a TM44 certificate?
Yes. Once your inspection has been completed, you'll receive the relevant TM44 certificate and associated report, confirming that the inspection has taken place and documenting the assessor's findings and recommendations.
Do I need to add my business to the TM44 register?
No. Your accredited energy assessor is responsible for lodging your completed air conditioning inspection report on the official TM44 register following the inspection.
Do commercial landlords need TM44?
Yes, where the qualifying criteria are met. Commercial landlords remain responsible for ensuring buildings with air conditioning systems meeting the TM44 requirements receive inspections at the required intervals.
Does TM44 apply to residential buildings?
In most cases, TM44 surveys relate to non-domestic buildings. However, some mixed-use or residential developments with qualifying communal air conditioning systems may also fall within the scope of the legislation.
What common issues are found during a TM44 assessment?
Every building is different, but a TM44 survey may identify issues affecting the air conditioner's condition, including:
- Incorrect settings or faulty controls
- Poor maintenance of filters and coils
- Refrigerant leaks
- Inadequate insulation for ducts and pipework
- Obsolete systems unsuitable for modern efficiency standards
- Ageing equipment that is no longer appropriately sized for the building
Identifying these issues allows building owners and managers to make informed decisions about future air conditioning maintenance, improve efficiency and reduce unnecessary energy consumption.
Are there any penalties for non-compliance with the EPBD?
Yes. Failure to comply with the Energy Performance of Buildings Directive (EPBD) may result in a statutory fine of £300, which can be repeated weekly until a valid inspection has been completed. A further £200 penalty may apply if you fail to provide a valid report within 7 days of an official request.
Do I have to act on the recommendations in a TM44 report?
No, you're not legally required to implement the recommendations included in your TM44 survey report. However, they are designed to help improve the efficiency, performance, and sustainability of your systems, potentially reducing operating costs, energy consumption, and environmental impact.
Do you offer TM44 inspections in London?
Yes. We provide TM44 air conditioning inspections throughout London and across the UK. Our nationwide network of accredited energy assessors allows us to support organisations ranging from individual commercial premises to large multi-site property portfolios.
What are the most helpful links about TM44?
For official guidance on TM44 air conditioning inspections, we recommend reviewing the UK Government's guidance on getting your air conditioning system inspected or legislation from the Energy Performance of Buildings Directive (EPBD). You can also review the DLUHC database (TM44 register) for public access.
What is the ACI Reports APEL training programme?
The ACI Reports APEL training programme provides a route for experienced M&E engineers and qualified EPC assessors who want to become TM44 air conditioning inspection specialists. Please note that this programme is only available to individuals who intend to work for ACI Reports. If you're interested in joining our team as a TM44 survey specialist, we'd be pleased to hear from you.
