The aim of the air conditioning TM44 regulations is to ensure the efficiency and safety of a system, and to advise on reducing operating costs and carbon emissions through a regulated inspection. It is the system operator’s statutory obligation to ensure that an air conditioning system under their control is inspected, maintained and operated correctly.  There are a number of points that regulate when an air conditioning system must be inspected.

  • All systems fitted on or after 1 January 2008 must have an inspection within five years of the fitting date.
  • Systems with an effective rated output is more than 250kW must have had an initial inspection by January 2009.
  • Systems with an effective rated output of more than 12kW must have had an initial inspection by 4 January 2011.
  • Only systems with an effective rating of over 12kW are affected by these regulations.


Air conditioning TM44 regulations are designed to examine the refrigeration and air moving systems and their relevant controls.  There is also a requirement for the assessor to estimate whether the system is suitably sized for the area as well as suggest ways that the system could be improved.

It is the responsibility of the person who controls the system to ensure that access to all relevant parts of the air conditioning is accessible for the assessor to safely carry out the inspection.  The assessor is not responsible for fixing any part of the system that is found at fault.

Although the inspection primarily addresses energy performance the assessor must confirm that relevant checks have been made to ensure that there is no risk of Legionella as required by Health (Legionella) Regulations 2001.

The report will contain:

  • Building address.
  • Name of the accredited energy assessor
  • Name and address of the energy assessor’s employer.
  • Date of inspection
  • Name of the government accreditation scheme.
  • System efficiency.
  • Faults found during the inspection.
  • Adequacy of controls and maintenance procedures.
  •  Size of the system in relation to its cooling load and suggestions for improvement.
  • A summary of the findings and recommendations.

After 6 April 2012, all reports produced must also contain a valid report inspection number.

Although there is no legal requirement to act upon the air conditioning TM44 regulations inspection report findings, the penalty for failing to have a report is a fixed £300 with a further £200 if the report is not made available within seven days.

For an inspection, consultation or to arrange an audit with one of our assessors, please contact us on: 0845 520 2014 or at




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