AirFour Air Conditioning & Mechanical Service Keeping Melbourne cool since 1987. Our staff are highly experienced in air conditioning, with a diverse range of clients across Government Offices, Health Care Facilities, Residential Homes, Industrial Factories and Commercial Offices. We service virtually every type of air conditioning and refrigeration plant in operation in Melbourne, Victoria. We are committed to excellent service and reliability, taking the time to understand how you use your building, be this at home or work. You need a system that works for you and a service company you can trust to maintain your air conditioner and refrigeration unit effectively. We strive to deliver a healthy and comfortable environment which is correctly matched to your needs.