Carmel Softwareannounced that it has released an upgrade to its popular HVAC estimating software program: Estimate 6.0, a program that allows the HVAC mechanical contractor or D-B engineer to create job cost estimates that include HVAC equipment pricing, labor costs, subcontractor costs, and a wide variety of other items. It also includes a database of pricing for 50,000-plus HVAC parts from all major manufacturers.