HVAC Pricing Question

[Yavuz Bayram]

Hello,

So for my most recent project i have gutted the house down to the frames a 1600 sq foot colonial two floors called in a few HVAC companies to give me a price and i have prices ranging from $13,000 to $20,000 for a 4 ton 60,000 btu system with ductwork installation. The prices seem really high to me i had a similar size building done for $8500 about 4 years ago so i am confused on why the price is almost double now. Anyone have any recent experience on pricing and any recommended installers in North Jersey?