HVAC Replacement
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Types of HVAC Systems
Central AC
Cools entire home via ductwork. Most common in the US.
Heat Pump
Heats and cools. Most efficient in mild climates.
Gas Furnace
Heats via natural gas. Best for cold climates.
Mini-Split
Ductless zoned heating and cooling. No ductwork needed.
Boiler
Radiant heat via hot water. Common in older homes.
Geothermal
Uses ground temperature. Highest efficiency, highest upfront cost.
Benefits of a New HVAC System
Lower Energy Bills
Modern high-efficiency systems can cut heating and cooling costs by 20–50% vs. older units.
Improved Reliability
New systems come with manufacturer warranties of 5–10 years on parts and compressors.
Better Comfort
Variable-speed systems maintain more consistent temperatures and reduce humidity.
Better Air Quality
New systems with advanced filtration remove allergens, dust, and pollutants more effectively.
Rebates & Tax Credits
Federal and utility incentives can offset 15–30% of the cost of qualifying systems.
Home Value
A new HVAC system is a top selling point that increases home value and buyer confidence.
HVAC Cost by System Type
| System Type | Unit Cost | Installed Cost | Lifespan |
|---|---|---|---|
| Central AC (3-ton) | $1,500–$3,500 | $3,000–$7,500 | 15–20 yrs |
| Gas Furnace (80k BTU) | $800–$2,500 | $2,500–$6,000 | 15–25 yrs |
| Heat Pump (3-ton) | $1,200–$3,500 | $3,500–$8,000 | 10–15 yrs |
| Mini-Split (1 zone) | $700–$2,000 | $2,000–$5,000 | 15–20 yrs |
| Full System (AC + Furnace) | $2,500–$6,000 | $5,000–$12,000 | 15–20 yrs |
Costs include equipment and standard installation labor. Prices vary by region, system size, and home configuration.
What to Expect
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More than one quote
You are matched with multiple local contractors, so you can weigh scope and price against each other rather than accepting the first number you are given.
Local contractor network
You are matched with contractors serving your area who work in the trade your project needs. Confirm any contractor's credentials and coverage directly with them before signing.
Frequently Asked Questions
A full HVAC system replacement (furnace + AC) typically costs $5,000–$12,000 installed. A central air conditioner alone runs $3,000–$7,500, while a furnace replacement costs $2,500–$6,000. Mini-split systems range from $2,000–$5,000 per zone. Costs vary by system size (tonnage), efficiency rating (SEER/AFUE), brand, and local labor rates.
Central air conditioners typically last 15–20 years. Furnaces last 15–25 years. Heat pumps last 10–15 years. Regular maintenance (annual tune-ups, filter changes) extends system life. If your system is over 15 years old and needs major repairs, replacement is usually more cost-effective.
SEER (Seasonal Energy Efficiency Ratio) measures AC efficiency. The federal minimum is 14 SEER (15 in the South). A 16–18 SEER unit offers a good balance of efficiency and cost. High-efficiency units (20+ SEER) cost more upfront but can reduce cooling costs by 30–50% compared to older 10 SEER systems.
Use the 5,000 rule: multiply the system's age by the repair cost. If the result exceeds $5,000, replacement is usually smarter. For example, a 12-year-old system needing a $500 repair = $6,000 — consider replacing. Also consider replacing if the system uses R-22 refrigerant (phased out), is over 15 years old, or needs repeated repairs.
HVAC systems are sized in tons (1 ton = 12,000 BTU/hr). A rough estimate is 1 ton per 600 sq ft, but proper sizing requires a Manual J load calculation that accounts for insulation, windows, climate, and ceiling height. An oversized system short-cycles (turns on/off too frequently), reducing efficiency and comfort.
Yes. The federal Inflation Reduction Act provides a 30% tax credit (up to $600/year) for high-efficiency HVAC equipment. Many utility companies offer $100–$500 rebates for ENERGY STAR certified systems. Heat pump installations may qualify for up to $2,000 in federal tax credits. Your contractor can help identify available incentives.
HVAC Replacement
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