TM44 (AIR CONDITIONING INSPECTION REPORTING)

 

TM44 inspections are a mandatory requirement for all air conditioning systems in the UK with an effective rated output greater than 12kW. These inspections assess the energy efficiency of the system and ensure compliance with current regulations.

 

As part of the inspection, a detailed TM44 report is produced, providing:

 

• ​​An overview of the air conditioning systems in operation

• ​​Assessment of system condition, control settings, and operational efficiency

• ​​Identification of opportunities for performance improvement and energy savings

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Common Issues Identified During TM44 Inspections

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TM44 inspections frequently uncover issues that significantly impact energy performance and operational cost, including:

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• Incorrect Settings: Inappropriate temperature control, poorly calibrated thermostats, or outdated control systems

• Insufficient Insulation: Uninsulated or poorly insulated ductwork and pipework, leading to unnecessary energy loss

• Refrigerant Leaks: Loss of refrigerant directly reduces system performance and increases environmental impact

• Ageing Equipment: Older systems often fall short of current efficiency standards

• Lack of Maintenance: Dirty filters, blocked coils, and general neglect can severely reduce system efficiency

 

Benefits of TM44 Compliance and Implementation

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Addressing the issues highlighted in a TM44 report can lead to substantial benefits:

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• Improved Energy Efficiency: Government research indicates that full implementation of TM44 recommendations can result in energy savings of 30–40%. Even basic, low-cost measures such as optimising control settings can deliver savings of 10–20%

• Lower Carbon Emissions: More efficient systems contribute to a measurable reduction in greenhouse gas emissions, supporting sustainability goals and regulatory compliance

• Reduced Operating Costs: Optimised air conditioning systems consume less energy, resulting in lower utility bills and reduced maintenance costs over time

• Enhanced Operational Control: Ensuring control settings are aligned with the building's actual operational needs helps maintain occupant comfort and prevents energy waste

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Regulatory Update

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The TM44 regulations are currently under government review, with a formal announcement expected in 2025. Updated guidance may introduce new compliance requirements or expand the scope of current inspections.

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If your building operates an air conditioning system over 12kW, it is essential to ensure your TM44 inspection is up to date. Our accredited assessors can carry out inspections, provide fully compliant reports, and advise on practical steps to improve performance and efficiency.