The answer to 'how much to fix heat exchanger in my area' can vary significantly, but typically ranges from $1,000 to $3,000 for a residential HVAC system. The exact cost will depend on factors like the age and condition of your current heat exchanger, the make and model of your HVAC unit, and the labor rates in your local area.
Replacing a heat exchanger is a major repair that often requires the expertise of a licensed HVAC technician. They will need to assess the full system, order the correct replacement part, and properly install it to ensure safe and efficient operation. Getting multiple quotes from reputable local HVAC companies is essential to finding a fair price for this repair.