The answer to 'how much does air filter cost' is that the cost of an air filter can vary significantly depending on factors like the size, quality, and type of filter. Typical air filter prices for residential HVAC systems generally range from $10 to $50, but specialty filters or larger commercial units can cost more.
The cost is influenced by the filter material, MERV rating (which indicates the filter's efficiency), and whether it's a standard size or custom-fit. Cheaper fiberglass filters are on the lower end, while high-efficiency pleated or HEPA filters are more expensive. Factors like your location and the specific needs of your HVAC system will also impact the final price.