The answer to how much an air filter costs can vary significantly, but typically ranges from $10 to $50 for a standard HVAC filter. The exact price depends on factors like the size, quality, and brand of the filter, as well as where you purchase it.
Cheaper fiberglass filters are generally on the lower end of that range, while higher-efficiency pleated filters or specialty filters can cost more. The size of your HVAC system also plays a role, with larger filters naturally costing more. Additionally, filters purchased directly from an HVAC contractor may be priced higher than those found at a home improvement store.