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How Much Does an HVAC Unit Replacement Cost?

Your home’s heating, ventilation, and air conditioning (HVAC) unit keeps you warm in the winter and cool in the summer, and it’s always circulating fresh air to eliminate allergens and dust. If your HVAC unit isn’t performing as efficiently as it once did, it may be time for a replacement. According to HomeAdvisor, full HVAC unit replacement costs range from $5,000 to $10,000, with the national average at $7,000. This comes out to about $25 to $60 per square foot. Prices depend on the size and brand of the HVAC system, the size of the house, ductwork length, and the new unit’s efficiency rating. For new installations, expect to pay from $1,500 to $12,500. HVAC installation prices typically include labor costs of between $500 and $2,500. The total cost relies on the type and condition of the current system. It typically costs more to retrofit forced or central-air heating than to replace an existing unit.

Major Systems

How Much Does an HVAC Unit Replacement Cost?
HVAC unit replacement costs range from $5,000 to $10,000, with the national average at $7,000.
By Katie Flannery
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HVAC Unit Replacement Cost
Photo: istockphoto.com

Typical Range: $5,000 to $10,000
National Average: $7,000

New Unit

New HVAC systems cost between $1,000 and $10,000, depending on the brand and size of the unit. A new furnace typically costs between $1,000 and $4,000, and an air conditioner runs from $1,500 to $8,000. Consider that a newer, more energy-efficient model may save you money on energy bills in the long run.


Labor can run from $500 to $2,500, and the price is usually included with the overall installation costs. Depending on the size and complexity of the installation, the job can take between 6 and 10 hours if the old HVAC system is being replaced with a new one. If new ductwork is needed, the installation could be extended by 1 to 3 days.

Installation and Accessibility

There are three types of installations for an HVAC unit: a change-out installation that includes a new heating and cooling system, a full installation that includes all HVAC equipment and ductwork, and a full install that also includes a zoning system and any other additional features. The more difficult it is to access the existing HVAC system, the more expensive the replacement will be. If the HVAC unit is in a historic home, in a small attic or an attic with blown-in insulation, or if the HVAC unit requires custom-made pieces, it will add to the price of the installation.

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