Walk-in or portable cold storage can be an important part of any kitchen, no matter whether it's home or a restaurant. Refrigerator in this room is the place where you store your food supplies that will keep your family or customers fed, and when the unit is not operating effectively as it should, it can be a waste of money on electricity and cause further problems for you down the road.
To avoid this, a portable cold storage unit should have regular maintenance done on it. If you are lucky enough to have a handyman available to you, then you should consider making it a part of your duty to inspect these units every month to make sure there are no leaks and that all filters and pipes are free of gunk. You can also lease this equipment from companies like https://www.coolroomhireperth.com.au/ and avoid the hassle of maintaining them on your own.
If you do it on your own, you'd best have a professional come in and see a refrigerator in your room. Although you can do this yourself, they will also be able to check the level of coolant and other items that may not be equipped to do it yourself. While you may not need to have it inspected frequently at home, you should still have your cold storage checked at least twice a year.
Because the refrigerator is a large room, it will take some power to keep it cool. You should avoid leaving the door open for long periods of time, and consider closing the door behind you when you're looking to grab supplies from the unit itself. It is important that the door is closed firmly when no one is in it, as the seal will help to prevent cold air from spilling out as well.
Similar to a regular refrigerator, you will want to keep this unit filled as well. The more items to fill the shelves, the more efficient fridge in the room will run. If you do not want to invest in lots of perishables, consider stocking items that can be stored at cool temperatures that may extend their shelf life anyway. When you do this, you will not require a lot of energy to run, and your monthly bills should drop as well.