Of all the pieces of technology in your kitchen, none has more utility than the trusted fridge. It not only stores all of your foods, beverages, and produce, but it keeps them safe to eat and lengthens their time before spoilage. Not only that, but if you decide to store foods for a substantial period of time, the freezer can store food for years. With all this utility it is easy to see why having any failures in this useful appliance can be seen as a massive inconvenience. One that can cost in time, money wasted, and repair costs. Fortunately, there are some maintenance tips you can use to make sure your fridge stays in top working order. Here are 5 maintenance tricks that can help you avoid a costly refrigerator repair.1. Use it!This may seem like a no-brainer, but fridges work best when they have food mass inside to keep cool. Once food is brought up to its proper temperature for storage it acts like a cooling element itself, creating synergy and helping the unit to continue functioning and cooling other items inside the fridge. Units that a sparsely stocked will work harder maintaining proper temps.2. Set the thermostatA fridge should be set somewhere around 37 degrees and 40 degrees Fahrenheit. The goal is to have food chilled just enough so that bacteria cannot grow, yet warm enough so foods do not freeze unnecessarily. Sometimes a thermostat will be set above freezing however certain areas will still freeze soft foods with high water content. Be careful to adjust the temps so food does not get damaged.3. Inspect the door sealsAll the cool air that the unit works so hard to create needs to stay inside the unit! Make sure you check the door seals for breaks and leaks. Also, any damage to seals may make it harder for the door to shut causing cool air to spill out throughout the day or night. This could lead to food spoilage or sickness if you consume food unknowingly.4. Clean condenser coilsA fridge has coils? Most do. In the back. If you haven’t inspected your unit in awhile, it may be useful to pull it away from the wall and inspect the back. You want to clean off any dust or debris from the unit and make sure all venting is clear of dust as well.5. Keep the door shutThis also seems like a no brainer. However, sometimes people hold the door open and begin and end a conversation without realizing they are letting out all the cold air. Also, if the power goes out, make sure to quickly retrieve items in the unit and shut the door as quickly as possible.Use these tips to keep your unit working at its best!