Regularly changing your furnace filters can save you money and extend the life of your HVAC system. Clogged filters increase energy bills by 5-15%, strain the system, and lead to premature breakdowns. Replacing filters every 90 days or when visibly dirty improves efficiency, traps allergens, prevents buildup, and extends equipment lifespan. You can easily change filters yourself, improving indoor air quality and reducing energy costs. Additionally, schedule annual HVAC check-ups to ensure optimal performance and savings.