Commercial-sized refrigerators are important appliances. They keep products and samples safe in restaurants, grocery stores and medical facilities. These units must run continuously to offset temperature fluctuations. Enlist the help of commercial refrigeration services to ensure your unit can continue to perform. Don’t attempt to do fridge repair work yourself. The risk of danger from DIY repair work is very high. Professional refrigeration services are more affordable than you might think when you ask the right questions. Below are the four key checks you should carry out before picking a provider.