At Air Cool Engineering Midlands Ltd, we monitor and advise our customers on all applicable regulations so should legislation change in the future – you know you’ll be covered.

TM44 Air Conditioning Inspections

To help you adhere to the latest legal requirements, Air Cool Engineering Midlands Ltd offers CIBSE TM44 energy assessment in line with the Energy Performance of Building Regulations, April 2012. These are now mandatory and have been introduced for all buildings that have comfort cooling air conditioning systems installed with an accumulative capacity of 12kW or more. As part of these regulations, you are required to have an energy assessment every five years

Is your system approved?

If your building falls within this category, your first inspection should have been carried before the 4th January 2011. Thereafter, inspections will be required every 5 years. For systems installed after the 1st January 2008, the first inspection must take place within 5 years of the date of installation.

If you are in any doubt, please don’t hesitate to contact us on 0121 711 4700 or use our online support form. One of our engineering team will be happy to get back to you as soon as possible.

Your inspection report

Our accredited energy assessors, current members of the CIBSE accreditation scheme, will be happy carry out an inspection in accordance with CIBSE TM44.

Here’s what an assessment contains:

  • The equipment surveyed
  • If the sampled equipment is sized correctly (utilising CIBSE TM44 rule of thumb calculations)
  • Any health and safety issues noted at the time of survey
  • The condition of sampled equipment
  • Recommendations on how to operate your equipment in a more energy efficient way

Your quotation

This includes the survey and completion of the report template produced by the Department for Communities and Local Government for the production of reports in England and Wales.

This template will then be registered as per the statutory lodgement of air conditioning inspection reports, required in England and Wales from 6th April 2012 in order to comply with the Energy Performance of Buildings Regulations.

Air conditioning leak checks in accordance with F Gas Regulations

F Gas Regulations state that leak checks for air conditioning and heat pump equipment containing over 3kg of refrigerant gas must be carried out:

  • At least annually for applications with 3kg or more of F-gases (unless the equipment is hermetically sealed and labelled as such, in which case the threshold is up to 6kg)
  • At least once every six months for applications with 30kg or more of F-gases
  • At least once every three months for applications with 300kg or more of F-gases

Leak checks must be carried out by F Gas Certified (qualified) personnel. If a leak is detected and repaired, a further check must be carried out within one month to ensure that the repair has been effective.

A record of maintenance and service activity must be kept for each system. Leakage detection systems must be installed on applications with 300kg or more of F Gases, and when these are in place, checking requirements are halved.

R22 Refrigerant – HCFC Refrigerant

What is HCFC refrigerant?

A refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle. In most cycles it undergoes phase transitions from a liquid to a gas and back again.

Many working fluids have been used for such purposes. Fluorocarbons, especially chlorofluorocarbons, became commonplace in the 20th Century, but they are being phased out because they damage the ozone layer. Other common refrigerants include ammoniasulphur dioxide, and non-halogenated hydrocarbons such as propane.

HCFC was used as an alternative to the very high ozone-depleting CFC-11 and CFC-12, because of their relatively low (at the time) ozone depletion potential of 0.055, among the lowest for chlorine-containing haloalkanes. HCFCs had up to 98% less ozone depleting potential and 80% shorter atmospheric lifetimes than the corresponding CFCs they replaced. However, even this lower ODP is no longer considered acceptable.

Why the need to phase out HCFCs?

HCFC refrigerants need to be phased out due to their high ozone depletion potential and status as a potent greenhouse gas. It has a global warming potential that is 1810 times that of carbon dioxide.

Therefore HCFC R22 refrigerant has a detrimental effect on the ozone layer and the atmosphere results in excessive UV levels that cause global warming.

The Montreal Protocol, modified by the EU, enforces the end of supply of R22 refrigerant by 2015.

R22 refrigerant is not the only HFC likely to be phased out. The Committee of the European Parliament has also proposed banning the use of all fluorinated gases, including HFCs in air conditioners, heat pumps and refrigeration appliances from 2020.

Recent timeline of mandatory controls on the use of HCFC refrigerant


HCFCs banned in equipment produced after 31/12/99 for use as refrigerants in public distribution, cold stores and warehouses and as refrigerants for equipment of 150kW and over shaft input.


HCFCs are banned in all other refrigeration and air conditioning equipment produced after 31/12/2000, with the exception of fixed a/c equipment, with a cooling capacity of less than 100kW where use shall be prohibited from 01/01/2004 and of reversible air conditioning/heat pump systems where the use of HCFCs shall be prohibited from 01/01/2004 in all equipment produced after 31/12/2003.


The use of virgin HCFCs shall be prohibited in the maintenance and servicing of refrigeration and air conditioning equipment existing at that date.


The use of recycled HCFCs will be prohibited in the maintenance and servicing of refrigeration and air conditioning equipment existing at that date.