How much does a new AC or furnace cost?

Central AC replacement typically runs $5,000 to $12,000 installed, and a gas furnace $4,000 to $10,000. Heat pumps and full system replacements sit higher. Sizing, efficiency tier and ductwork drive the difference.

Is it worth repairing an older system?

A common rule of thumb: if the system is over 12 to 15 years old and the repair costs more than a third of a replacement, replacement usually wins — especially with older refrigerants that are being phased out.

Are heat pumps a good idea in cold states?

Modern cold-climate heat pumps work well below freezing and are often paired with backup heat. Whether they beat a furnace depends on your local electricity and gas rates.

HEATING, COOLING & AIR

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Homeowner guide

What Changes A HVAC Quote

No two homes are the same, which is why comparing matters. These are the decisions that move the number most.

Correct sizing

Oversized equipment short-cycles, cools unevenly and wears out early. A contractor should run a Manual J load calculation, not just match the tonnage of what's there now.

Efficiency ratings

SEER2 for cooling, AFUE for furnaces, HSPF2 for heat pumps. Higher ratings cost more upfront and pay back fastest in extreme climates with high utility rates.

Heat pump vs. furnace

Cold-climate heat pumps now work well far north, and often pair with a backup heat source. Which makes sense depends on your winters and your gas versus electric rates.

Ductwork condition

Leaky or undersized ducts undo the benefit of new equipment. Ask whether the quote includes duct sealing, static pressure testing or any modifications.

Rebates and credits

Federal credits for qualifying heat pumps and high-efficiency equipment, plus utility rebates, can take a meaningful amount off. Ask which ones your quote assumes.

Labor warranty and service

Equipment warranties often require registration and annual maintenance. The labor warranty and who answers the phone in July matter just as much.

What Homeowners Typically Pay

Central AC replacement: $5,000 – $12,000
Gas furnace replacement: $4,000 – $10,000
Heat pump (whole home): $8,000 – $20,000
Ductless mini-split (per zone): $3,000 – $7,000
Diagnostic or service call: $90 – $250

Typical US ranges. Home size, ductwork, efficiency tier and local labor rates change these figures — Pickwise does not quote prices.

Questions Worth Asking

Did you run a Manual J load calculation for my home?
What SEER2, AFUE or HSPF2 rating is this equipment, and why that tier?
Does the quote include any ductwork repair, sealing or modification?
Which rebates or tax credits are you assuming, and who files them?
What does the labor warranty cover, and what's your emergency response time?

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