24/7 Refrigeration mechanics Sydney. If you're running commercial cool-rooms, cold rooms or freezers, then you'll know that break-down means there's risk of stock-loss. Our commercial refrigeration repairs service comes with down-to-earth advice & prompt call outs. In fact, if your'e trying us for the first time for emergency refrigeration servicing, there's a $0 call-out fee. We're HVAC approved and although based in Baulkham Hills, we're mobile & offer refrigeration services Sydney-wide.