03/17/2026
Wanted to provide a PSA today. While we subcontract most of our HVAC needs, we were doing a small repair yesterday & noticed the furnace was "whistling" at the furnace return. We opened the furnace filter housing & found the filters completely clogged. See the photo. So please check your furnace filters at least 2-3 times a year, and replace as needed. Your furnace & air quality will thank you.