Turn Key Air Conditioning Ltd – Air Conditioning Contractors


Turn Key Air Conditioning Design, Supply, Installation and Maintenance


Replace Technology & the R22 Ban

TKAC are specialist air conditioning contractorsR22 is an HCFC widely used in air conditioning systems. The chlorine in HCFC’s is ozone depleting and since January 1st 2010 it has been illegal to produce or stock virgin R22. R22 is the most common HCFC in use in the UK today.

R22 Legislation

Here are the main points of legislation regarding R22:

  • Virgin R22 is banned from sale within the UE since 1 Jan 2010
  • Only ‘recycled’ R22 is available from 1 Jan 2010
  • All R22 use will be banned from 1 Jan 2015

R22 Ban – The Options

There are two main options regarding the ban on R22

Direct Replacement or Drop-In, Refrigerant

Alternatives to R22 are available, such as R422D and R427A. As the name suggests, these products are dropped in as a replacement for the R22. There are however significant potential problems with using Drop-In refrigerants. For example, they have different pressure-temperature characteristics to R22 which can confuse the embedded system software, giving erroneous pressure/temperature readings. These products could potentially create unstable air conditioning systems, leading to deterioration of many parts within the system. This could lead to catastrophic system failure such as compressor burnout or seal failures. Risks include:

  • Suboptimal air conditioning system performance
  • Poor frost/defrost
  • Creation of dew condensation and dew spray
  • Possible corrosion risks
  • Possible leakages
  • Possibility of compressor failure

Replace Technology and the R22 BanRecycled R22 can only be used in air conditioning systems for servicing and maintenance purposes and from Jan 2015, R22 systems may no longer be re-filled with recycled R22.

R22 System Replacement

There are two options regarding R22 air conditioning system replacement – full or part replacement. Full replacement involves the replacement of all air conditioning equipment and component parts. Mitsubishi Electric’s patented Replace Technology enables part replacement, where the air conditioning equipment is replaced but the existing pipework and electrical system is retained. See Mitsubishi Electric Replace Technology for details. In both systems, the new inverter driven R410A air conditioning units are used, offering energy savings of around 50% on R22 driven systems.

R22 – Full or Part System Replacement

The decision on part or full replacement will involve a number of factors:

  • How old is the air conditioning equipment
  • What is the operating state of the equipment
  • Is there a strong maintenance history on the air conditioning system
  • Is the pipework in good condition
  • What is the payback period for the replacement air conditioning system

2003 was the last year in which high volume R22 sales were made and even then, this was less than 20% of total market volume. Thus many R22 driven air conditioning systems will now be approaching, if they have not exceeded, 10years of age.

WynyardSeveral conditions arise when evaluating the payback period for R22 system replacement:

  • The energy efficiency of old equipment is far less than it was when it was originally installed, irrespective of maintenance
  • The new R410A driven air conditioning systems are inverter driven, giving reduced running costs and closer comfort levels.
  • The R410A air conditioning systems are circa 50% more energy efficient than the old R22 based systems
  • Rapidly rising energy costs throw energy efficiency into sharp focus

Call TK Air Conditioning For Audit & Best Advice on R22 Replacement

Each company should have an assessment of their air conditioning requirements made by accredited, experienced professionals. TK Air Conditioning work with the world’s major system providers and are ideally placed to recommend a strategy for dealing with the R22 phase out. Call now on 0191 438 7410 to arrange a site visit and assessment.

Replace Technology from Mitsubishi Electric

Please visit Replace Technology to view details on the revolutionary system from Mitsubishi Electric which enables the adoption of R410A based air conditioning systems at considerably reduced cost, with further environmental benefits.

HCFC R22 Phase Out. Chlorine in HCFC’s is Ozone Depleting, Illegal to Produce or Stock R22. R22 Legislation, R22 Banned. Recycled R22, R22 Drop In Replacements R422D, R427A, Problems. Full or Partial R22 Air Conditioning System Replacements. Mitsubishi Electric Replace Technology, Pipework Retained. Inverter Driven R410A Air Conditioning Units, 50% Energy Savings. Air Conditioning System Assessment by Accredited Assessor, Low Cost R410A Systems Installers.

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