Facilities managers are always on the hunt for cost-effective solutions that will save energy, time, and money. ConSol, a leading-edge research and energy consulting firm in California, has some new information that might make choosing the most cost-effective, energy-saving products for commercial buildings easier.
Recently, ConSol conducted a full analysis of improvements that can be made to reduce energy bills in existing office buildings. The study looked at buildings in cities throughout California(San Diego, Pasadena, Fresno, and Oakland). When window film installation was compared to other green solutions, like upgrading HVAC systems, adding R-38 ceiling insulation, and using air sealing and caulking, window film came out on top.
The analysis uncovered impressive results when it comes to installing window film in existing buildings: a facilities manager can expect to save up to 18 percent annually with window film, depending on the climate zone and what type of window film is used.
The study also showed that ROI on window film’s energy savings alone can often offer payback of less than two years. In the existing buildings that were studied, installation of window film reduced solar heat gain, which allowed for lower air-conditioning costs and reduced lighting bills.
“With over 70 percent of the buildings and homes in the California market having been constructed before 1980, window film has to be high on the list for every building retrofit project across the state,” says Mike Hodgson, president of ConSol.
ConSol’s analysis also shows that window film could play a big part in helping California meet the requirements of Assembly Bill 32: Global Warming Solutions Act. It requires greenhouse-gas emissions to be reduced to 1990 levels by 2020, which equals a 30-percent reduction over business-as-usual projections for 2020. AB 32 recommends that 11 percent of the total savings should come from energy reduction in buildings. As the ConSol analysis shows, one way for existing buildings to achieve significant energy savings is by installing window film.
What do you think about this study? Does information from analysis like ConSol’s help you make better decisions about ways to save energy?