AK Coolroom and Freezer Hire Caroline Springs. AK Coolroom and Freezer Hire Caroline Springs, located in the City of Melton, is your first stop for all your refrigeration hire needs. Our extensive range of display refrigeration, from Double Door Display fridges, Cake Display Fridges, Gelato Display Freezers to name a few, coupled with our large Portable Trailer Cool Rooms and Portable Skid Coolrooms and Freezers will be sure to provide you with the exceptional X-factor you are looking for. With our timely delivery service and professional service, AK Coolroom and Freezer Caroline Springs hire will be sure to help make your refrigeration hire an outstanding success.