How Much Does HVAC Replacement Cost in the United States?

Pick the system type, then add whichever climate item applies to where you live. Those two numbers are your estimate.

$5,200 – $15,500United States, 2026, installed.

In the United States the baseline job - AC only on existing ducts - is $5,200-7,600, and that figure is remarkably stable across regions.

Duct rework adds $850-5,200 across the United States and is the single most commonly omitted line in a headline quote.

Across the 4 US cities we have researched, the climate-specific add-on ranges from $180 to $14,500 - a far wider spread than the equipment itself.

Add the climate item

If you live here	Typical add	Why
Dry high desert with an evaporative cooler	$6,800-14,500	Ductwork usually has to be built or reworked
Humid southeast	$1,600-3,400	Whole-house dehumidifier - the AC alone will not do it
Extreme sustained heat, storm-prone grid	$180-450	Surge protector and hard-start kit
Cold winters	$3,700-8,000	Furnace replaced alongside the AC
Any region, older ductwork	$850-5,200	Leaky or undersized ducts waste a new system

Ask every contractor for a load calculation, not a size copied from the old unit.
Specify the same tier to everyone - single-stage, two-stage or variable-speed - or the totals are not comparable.
Ask explicitly whether the indoor coil and air handler are included. This is where cheap quotes usually hide.
Ask what they have assumed about the ductwork, and whether testing it is included.
Ask for the manufacturer warranty terms and what registration is required to keep them - many require registration within 60-90 days.

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