The Ultimate HVAC Air Filter Maintenance and Replacement Checklist: A Homeowner’s Step-by-Step Guide to Cleaner Indoor Air, Lower Energy Bills, and a Longer-Lasting System
Pull any HVAC filter at the manufacturer’s recommended 90-day mark, and the verdict varies wildly. In our testing, some are still fine, most are already costing real money on the energy bill through restricted airflow, and a small share of humid-climate filters have started loading mold by then. The conditions inside your home decide the … Read more