replace from $6,000 to $12,000 replace $3,000 and $7,500 $3,500 to $7,500 a replacement averages from $3,500 to $7,525 spending too much money as much as $16,000 replace a new HVAC can cost $6,000 to $12,000 Modernize reports $6,000 and $12,000 $3,000 and $7,500 replace