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Split and Cassette Air-conditioning Units in Healthcare Premises

Air Conditioning

Air conditioning is the process of altering the properties of air (primarily temperature and humidity) to more comfortable conditions, typically with the aim of distributing the conditioned air to an occupied space.

In common use, an air conditioner is a device that removes heat from the air inside a building lowering the air temperature.

Split and Cassette Air-Conditioning Units

In accordance to the Health Technical Memorandum HTM03-01: Specialised ventilation for healthcare premises Part B: Operational management and performance verification. Split and cassette air-conditioning units must be cleaned and maintained in a good condition.

HTM03-01 Part B: Paragraph 5.27: "These units incorporate internal recirculation air filters and a drainage systems to remove condensate from the cooling coil. This system should be inspected and cleaned every three months."

Portable Room Air-Conditioning Units

Portable units also incorporate internal air filters and drainage system to remove condensate from the cooling coil. The infection control team must be consulted before these types of unit are deployed.

Portable Room Air-Conditioning Units must be inspected and cleaned before being brought into use.

When in use, all portable units should be inspected and cleaned on a weekly basis while remain in use.


HTM03-01 Paragraph 5.32 - Units employing an internal water reservoir and wick to promote evaporative cooling must not be used in healthcare premises.

We recommend that all split and cassette air-conditioning units are serviced/inspected on a six monthly basis or at least annually by a competent contractor.

These checks should include:

1. Visual inspection 2. Filter Inspection/Cleaning/Replacement if necessary 3. Electrical Inspection 4. Gas Check (minimum once per year) – This must be done by F-Gas Registered Person who will issue the certificate of gas inspection.

If you have any questions about servicing and maintenance of your air-conditioning system please contact us.

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