Westinghouse is a company focused on high-efficiency HVAC systems and air quality. Many of their units require the use of specialty whole house air filters, also known as residential air cleaners. These box-type pleated air filters accomplish several tasks - keeping your system clean, allowing peak performance of your system by letting a large volume of air pass through the increased filter depth, and improving the quality of air in your home. After choosing your size, you can decide which MERV rating will accomplish your filtration needs! If you're having trouble finding the correct replacement whole house air filter, contact U.S. Home Filter today.