HVAC Cost in Metro Detroit (2026)

Efficiency is the first lever: a base 80% AFUE furnace costs less than a 96%+ high-efficiency unit, which burns less gas but costs more up front and needs different venting. Capacity matters too — a larger home requires bigger equipment. Then come the install conditions: undersized or leaky ductwork, an out-of-date gas line, or a tricky furnace location all add labor. The permit and inspection are real, modest line items that protect you.

• Furnace replacement (80% AFUE): $4,000–$6,000 installed and permitted
• High-efficiency furnace (96%+ AFUE): $6,000–$9,000+ installed
• Central AC replacement: $4,500–$8,000 depending on size and SEER
• Furnace + AC together: $8,000–$15,000+ as a matched system
• Cold-climate heat pump system: $8,000–$18,000+ depending on configuration

Higher efficiency costs more today but lowers your gas and electric bills every Michigan winter, so the premium often pays back over the system’s life — especially with rebates and tax credits that can apply to high-efficiency equipment and heat pumps. Just as important: do not let anyone size by guesswork. A right-sized 80% furnace beats an oversized 96% one. Insist on a load calculation, and the pros in our network provide one.