HVAC system costs in Connecticut typically range from $5,000 to $10,000 or more, depending on your home’s size and the equipment you choose. Basic systems start around $5,000-$7,000, while high-efficiency units can exceed $10,000. However, Connecticut residents can significantly reduce these costs through available rebates and tax credits. Heat pump installations qualify for up to $250 per ton in state rebates, plus federal tax credits covering up to 30% of total installation costs. Additional factors like ductwork modifications can add $2,000-$5,000 to the total project cost. We provide detailed estimates that break down all costs upfront, so you know exactly what to expect.