How much does a new HVAC system cost?

Central AC + gas furnace: $5,000-$12,000 installed. Air-source heat pump: $4,000-$8,000. Cold-climate heat pump: $6,000-$12,000. Mini-split (per zone): $3,000-$5,000. Geothermal: $15,000-$35,000. The average homeowner spends $7,000-$10,000 for a complete central AC and furnace replacement. Factors: home size, efficiency rating, brand, and local labor rates. Federal tax credits can reduce heat pump costs by $2,000.

Heat pump vs furnace: which is better?

Heat pump: better for moderate climates (zones 3-5). Heats and cools with one unit. More energy efficient (200-300% vs 80-98% for gas). Lower operating costs. Qualifies for tax credits. Cold-climate heat pumps now work down to -15 degrees F. Gas furnace: better for very cold climates (zones 6-7) with cheap natural gas. Produces hotter air (120-140 degrees F vs 90-100 degrees F from heat pumps). More familiar to HVAC technicians. The trend: heat pumps are rapidly gaining market share nationwide as cold-climate models improve and energy costs favor electricity over gas. For most homeowners: a heat pump is the better long-term investment.

How often should HVAC be serviced?

Twice per year: once in spring (AC tune-up before cooling season) and once in fall (furnace tune-up before heating season). Cost: $100-$200 per visit. What is included: inspect and clean coils, check refrigerant levels, test electrical connections, lubricate moving parts, check thermostat calibration, and inspect ductwork. Benefits: extends equipment lifespan 5-10 years, maintains efficiency (dirty systems use 15-25% more energy), and prevents 95% of breakdowns. Change air filters every 1-3 months between service visits ($5-$20 per filter).

How long does an HVAC system last?

Gas furnace: 15-25 years (average 20). Central AC: 15-20 years (average 15-17). Heat pump: 12-15 years (works year-round so wears faster). Boiler: 20-30 years. Mini-split: 15-20 years. Geothermal: 25-50 years (ground loop lasts 50+ years). Factors that shorten lifespan: skipping maintenance, oversized or undersized system, coastal salt air, and extreme climates. Signs of end of life: frequent repairs ($500+ per year), uneven heating/cooling, strange noises, and rising energy bills.

Article

Home Improvement

HVAC Guide: Systems, Cost & Maintenance

Lumberama Editorial Team, HVAC & Home Comfort Specialists Sep 18, 2026 13 min read

HVAC Basics

HVAC stands for Heating, Ventilation, and Air Conditioning. It is the system that heats and cools your home. The major components: furnace or heat pump (heating), air conditioner or heat pump (cooling), ductwork (distributes air), thermostat (controls the system), and air filter (cleans the air). Average lifespan: furnace: 15-25 years. Air conditioner: 15-20 years. Heat pump: 12-15 years.

System Types

Central AC + gas furnace: The most common system in the US. Gas furnace heats, central AC cools. Uses ductwork. Cost: $5,000-$12,000 (complete system installed). Best for: cold climates with natural gas access.

Heat pump (air-source): Heats AND cools with one unit. Moves heat rather than generating it (very efficient). Works well in mild to moderate climates. May need supplemental heat below 25-30 degrees F. Cost: $4,000-$8,000 installed. Best for: moderate climates (zones 3-5).

Heat pump (cold-climate): Newer models efficient down to -15 degrees F. Cost: $6,000-$12,000 installed. Increasingly popular nationwide.

Mini-split (ductless): Wall-mounted indoor units connected to an outdoor compressor. No ductwork needed. Heats and cools individual rooms/zones. Cost: $3,000-$5,000 per zone installed. Best for: additions, garages, rooms without ductwork, and supplemental heating/cooling.

Boiler + AC: Hot water or steam radiators for heat, central AC for cooling. Common in older northeastern homes.

Geothermal heat pump: Uses underground loop to exchange heat. Most efficient system available (300-500% efficient). High upfront cost: $15,000-$35,000. Lowest operating cost. 25-50 year lifespan. Best for: new construction where excavation is straightforward.

Efficiency Ratings

SEER2 (cooling): Minimum: 14-15 (by region). Good: 16-18. Excellent: 20+. Higher SEER = lower cooling costs.

AFUE (gas furnace): Standard: 80%. High-efficiency: 90-95%. Condensing: 96-98%. Higher AFUE = more heat per dollar of gas.

HSPF2 (heat pump heating): Minimum: 7.5. Good: 8.5-9.5. Excellent: 10+.

Maintenance

Homeowner tasks: Change air filter every 1-3 months ($5-$20 each). Keep outdoor unit clear (2 feet of clearance). Keep vents open and unblocked.

Professional maintenance: Annual tune-up: $100-$200 (spring for AC, fall for furnace). Includes: refrigerant check, coil cleaning, electrical inspection, and safety check. Regular maintenance extends lifespan 5-10 years and prevents 95% of breakdowns.

Costs

New system (installed): Central AC only: $3,500-$7,000. Gas furnace only: $2,500-$6,000. Central AC + furnace: $5,000-$12,000. Air-source heat pump: $4,000-$8,000. Cold-climate heat pump: $6,000-$12,000. Mini-split (per zone): $3,000-$5,000. Geothermal: $15,000-$35,000.

Repairs: Refrigerant recharge: $200-$600. Compressor: $1,500-$3,000. Blower motor: $400-$800. Capacitor: $150-$400.

Tax credits: Heat pumps and high-efficiency systems may qualify for federal tax credits of up to $2,000 (check current IRS guidelines).