Africa’ s only monthly publication serving the HEVAC & R sectors

ISSN 1812-772X

ISSN 1812-772X

August 2025 I Vol 41 No 06

PUBLISHER DETAILS

PUBLISHED BY INTERACT MEDIA DEFINED( PTY) LTD 13A Riley Rd, Bedfordview, 2007, South Africa PO Box 695, Edenvale, 1610 Tel: + 27( 0) 11 579 4940 | Web: www. interactmedia. co. za

PUBLISHING UNIT LEAD: Dale Macnamara | dale @ interactmedia. co. za EDITOR: Eamonn Ryan | eamonn @ interactmedia. co. za

ADVERTISING EXTERNAL SALES Dale Macnamara | sales @ interactmedia. co. za Chandre van Aswegen | chandre @ interactmedia. co. za

SUBSCRIPTIONS: Ralph Shongwe | ralph @ interactmedia. co. za

SUB-EDITOR: Tanya Olckers | tanya @ interactmedia. co. za

DESIGN AND LAYOUT: Ruan Coetzee | ruan @ interactmedia. co. za PROCESS CO-ORDINATOR: Royce Headger | royce @ interactmedia. co. za

REGULAR CONTRIBUTORS Grant Laidlaw, Ryan Rennie and Michael Young

ADVISORY COMMITTEE Grant Laidlaw, John Parry, Pat Burke, Graeme Page and Willem van der Westhuizen

REGULARS 1 Hot and chilled 45 Brand listings 48 Final fix

NEWS 3 Premium Airconditioning celebrates grand opening of 6th branch

ASSOCIATIONS 4 ACRA student crowned champion at FRIGAIR 2025’ s inaugural Skills

Development Hub 9 SAIRAC hosts engaging Meet and Greet breakfast at FRIGAIR 11 SAIRAC Joburg embraces face-to-face connection with insightful CO2 TechTalk 13 The cost of cutting corners

BUSINESS 16 Designing data centres for optimal energy efficiency: the AI revolution and rise of liquid cooling

MANAGEMENT Operations / Finance: Sean Macnamara | sean @ interactmedia. co. za Finance: Laetitia Arnott | laetitia @ interactmedia. co. za

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DISCLAIMER: While every reasonable precaution has been taken to ensure the accuracy of the advice and information given, neither the editor, publisher, proprietor, staff, nor any official body represented or published in this issue, will accept responsibility for any damages, loss, injuries, or false claims that may arise or be made in the content. Including but not limited to any references to gender, religion, politics, ethnicity, or personal preferences of any editorial contribution whether an industry expert, advertiser through sponsored or paid content or contract writer. We subscribe to the Code of Conduct of the Advertising Regulatory Board( info @ arb. co. za) and the Press Ombudsman( see below). Disclaimers by individual companies are hereby overridden by this disclaimer.

COPYRIGHT: Reproduction of any of the content and photographs is expressly forbidden in terms of the Copyright Act of 1987 with all amendments. All requests to reproduce must be made in writing to the publisher and such confirmation must be given in writing before proceeding. A copy of where the reproduction was published must be supplied to the publisher at the above address. All publication and exhibition titles are registered as trademarks in terms of the Trademarks Act of 1993 and are held by Interact Media Defined( Pty) Ltd, Reg No 2014 / 092774 / 07.

PRESS OMBUDSMAN: This publication has committed itself to maintain the highest standards of journalism as embodied in the Press Code of Professional Practice. If you believe we have failed to report news and comment accurately, honestly and fairly, you may lodge a complaint with the Press Ombudsman either by email, letter, or by telephoning the office for the procedure to be followed. Tel: + 27( 0) 11 484 3612 / 8 | Email: enquiries @ ombudsman. org. za Website: www. presscouncil. org. za for the press code and / or the complaints form.

FEATURE 25 Natural refrigerants: a sustainable cooling solution

PROJECT 31 Stellenbosch University embarks on ambitious precinct-cooling HVAC upgrade

TECHNICAL 42 New BITZER oil cooler series for enhanced performance

31

Stellenbosch University embarks on ambitious precinct-cooling HVAC upgrade

Refrigeration and Air Conditioning Africa

ISSN1812-772X | R92.00 August 2025 | Vol 41 No. 06

Heating | Energy | Ventilation | Air Conditioning | Refrigeration

ASSOCIATIONS ACRA student crowned champion at FRIGAIR 2025’ s inaugural Skills Development Hub

BUSINESS Designing data centres for optimal energy efficiency: the AI revolution and rise of liquid cooling

EVENTS FRIGAIR 2025 –“ Nothing short of world class”

PROJECT Stellenbosch University embarks on ambitious precinct-cooling HVAC upgrade

Cover image by Two Oceans Air Conditioning.