If you own a walk-in refrigerator or freezer with glass doors or are considering purchasing one, you may be wondering how much it costs to run them. Anthony, a manufacturer of glass doors for refrigerators and freezers, has put out an energy calculator on their website that answers that question. With this tool you can calculate your annual energy usage (including the load added to the refrigeration) and annual operating cost. To get started just input your door size, quantity of doors and select whether you are using them in a Normal (cooler) or Low (freezer) temp application. From there select your door model, frame model and lighting options and click compare. Once the calculation is complete you can select the “Detail View” button for more information.
This calculator is also useful if you’re deciding what kind of glass door model to use. You can compare up to six configuration options side by side and see their cost savings versus the configuration using the most energy. You can weigh your options whether low up-front costs are more important or if models that provide long-term energy savings are in your best interest.
Using this tool can help you make an informed decision on choosing glass doors. Keep in mind that these calculations are only accurate for Anthony glass doors, but may give you a ballpark figure for similarly equipped glass doors by other manufacturers. These values were measured in laboratory conditions so these calculations don’t take into account the load on the compressor when the glass doors are opened.