The answer to 'average cost for air filter' is that the typical range for a basic air filter for a residential HVAC system is generally between $10 to $50, depending on factors like the size, quality, and type of filter. Air filters are an essential component of your HVAC system, and replacing them regularly is important for maintaining indoor air quality and the efficiency of your heating and cooling equipment.
The cost can vary based on the specific needs of your home, the size and type of HVAC system, and the quality of the filter. Higher-end filters designed to capture more particulates or provide additional features like odor control may cost more. It's best to consult with a local HVAC professional to determine the right filter for your system and get a quote for the cost.