About Us
Based in Timaru, Cool Air is proudly locally owned and operated. For more than 20 years, we’ve supported South Canterbury and beyond—serving Ashburton, Geraldine, Timaru, Waimate, Oamaru, Fairlie, Twizel, and the wider Waitaki District.
A family-led team you can trust
Cool Air has been run by Regan and Charlotte Koster for over twenty years. Regan spent six years with Cool Air before purchasing the business in 2005.
They’re backed by a trusted team of skilled tradespeople, including experienced engineers and registered electricians. We select only high‑quality professionals, so your home, farm, or business is in capable hands. Health and safety is a priority, guided by our programme under the Health and Safety at Work Act 2015. We’re proud to hold Sitewise Gold Status, and our technicians keep current Site Safe passes plus the licences and certificates required for their work.
Recognised industry members you can rely on
Cool Air is a member of Climate Controls Company Association. With this membership comes recognition of our company’s active engagement in the practice, design and construction, erection, maintenance, servicing, supply and administration of mechanical services, refrigeration, heating, ventilation and air conditioning equipment and systems.
As members of this group, we uphold a strict code of conduct. This code of conduct guarantees the best and most trustworthy service for you.