Heating & Cooling, Conversions, Duct Work, Service, Installations, License and Bonded in Texas and New MexicoFree Estimates. Heating & Cooling, Conversions, Duct Work, Service and Installations. A Diagnostic Fee of $40.00, Summer & Winter Start-ups $ 95.00 per unit, Not Including Parts. ( Includes evap cooler, refrigerated air)