The answer to 'average cost for heat exchanger' is that the cost can vary widely depending on several factors. As an HVAC expert, I can provide some general guidance on the typical range and what influences the pricing.
The cost of a heat exchanger replacement can range from around $1,000 to $3,000 or more, depending on the size of your system, the complexity of the repair, and your location. Factors like the age and efficiency of your current unit, the materials used in the new heat exchanger, and the labor costs in your area can all impact the final price.