Sliding patio doors are so popular and one of the reasons is that they are thermally efficient. They are actually huge windows and have all standard features and support energy-efficient technology. The level of your sliding patio energy-efficiency depends on the model that you select. These sliding patio doors can be double or triple pane and have Low-E coverage for UV ray. These doors should be adaptable with different kind of weather and should have extra thermal foam installation inside the stiles, rails and frame. Even the best thermal efficient doors can’t deliver you the results that you want if they won’t get installed professionally. You should ask for a professional installer to replace or install your new sliding patio door and then you can make sure that you will receive the highest level of energy efficiency possible.