Several different factors impact heating and cooling loads in commercial buildings. However, because windows comprise a significant portion of the building envelope, they play an especially influential role in the amount of energy required to maintain a consistent interior temperature.
What Are Heating and Cooling Loads?
The heating load of a building, in simple terms, is the amount of heat energy that has to be added to a space to maintain a comfortable temperature when it’s cold outside. Cooling load, on the other hand, is the amount of heat energy that has to be removed from a space in order to maintain a comfortable temperature range when it’s hot outside.
Heating and cooling loads help to determine the type of HVAC system a building should have. To keep the building comfortable, the HVAC units must have the capacity to maintain a consistent temperature year-round.
In addition to the exterior surface area of a building covered by windows and the windows’ directional orientation, artificial lights, the number of people in a building, the equipment that runs in the building, and the roof also impact heating and cooling loads.
Window Film Can Make a Difference
Window film can reduce the heating and cooling loads of your building. Installing window film not only lowers the capacity required of your HVAC system, but it extends the life of your unit significantly.
Depending on the type of window film, it can reduce up to 78% of the solar heat that enters windows. This lowers the cooling load in the warm months. An added bonus is that window film works while still permitting plenty of natural light into your space. This reduces the need for artificial lighting, further lowering your building’s heating and cooling loads and making your heating and air conditioning units work more efficiently.
In the cooler months, window film can insulate windows and reflects heat back indoors to help retain the warm air that your HVAC system has worked hard to produce. This reduces cold spots around windows and helps to keep your building at a comfortable temperature.
Window film can actually optimize your existing windows so that they perform much like new windows. Installing window film provides similar benefits to replacing windows, except with less expense and disruption. Single-pane windows treated with window film provide energy efficiency nearly equivalent to that of double-pane windows. Furthermore, window film optimizes double-pane windows so they perform similarly to triple-pane windows.
Want to Lower Your Heating & Cooling Loads?
If you’d like to find out how window film can improve the energy efficiency of your buildings, reduce the strain on your HVAC system, and improve comfort year-round, we’d love to help craft a solution for you.
As the largest 3M dealer in the Midwest with over 40 years of experience, there’s no project we can’t tackle. In fact, we’ve installed over 500,000 square feet of window film in the last year. Connect with us and receive your free quote and energy savings estimate.