How much does it cost to install a 4-ton AC unit?

National Average Range:
$6,000 - $11,000

Get free estimates from air-conditioning and heating contractors near you

Get local cost

4-Ton Air Conditioner Installation Cost Guide

Updated: August 17, 2022

Reviewed by Adam Graham remodeling expert. Written by

To provide you with the most accurate and up-to-date cost figures, we gather information from a variety of pricing databases, licensed contractors, and industry experts.

Central air conditioning is a very effective way of cooling your entire home. While there are 4-ton HVAC units that offer other services, central air conditioning is the only type that is sized in tons and offers only air conditioning. If you have ductwork in your home, you already use a forced hot air furnace or have central air already, installing a new central air unit keeps your home cool during the hottest months of the year. If you have a larger-than-average home, a 4-ton AC unit may be the right choice. 4-ton units can come in various types and efficiencies, which impact your total costs.

The average cost to install a 4-ton central air conditioner is $6,000 to $11,000. Most homeowners spend around $8,500 on a 16 SEER split system fully installed with minor modifications to existing ducts. The low cost for this system is $5,000 for a 13 SEER split system unit fully installed with no modifications or changes to existing ducts. The high cost for this unit is $14,000 for a 21 SEER packaged HVAC unit with significant updates to existing ductwork.

4-Ton HVAC Unit Cost Calculator

4-ton air conditioning units are generally used in homes that are 3,000 sq.ft. or larger or have insufficient insulation. They can generally be found in three types. Split systems are the most common and least expensive. Packaged AC units are the least common. Packaged HVAC units combine a heat source with AC and are the most expensive. In addition, 4-ton units come in a range of efficiencies or SEER ratings, from 13 to 21. The higher the number, the more efficient the unit, and the lower your monthly bills. However, your upfront costs will also be higher for more efficient units. Below are the average costs to install a 4-ton AC unit of varying qualities.

In addition to the type of unit and its SEER rating, several factors influence your final cost. These can include the area it is installed in and its ductwork. If your ducts are old or need updates, this increases your costs. Likewise, the compressor needs to be installed outside on a concrete pad. If you need a new pad, this increases the cost of your installation and the overall cost of your project.

Enhancement and Improvement Costs

Install a 4-Ton AC and Furnace

Air conditioners and furnaces use the same ducts to heat and cool your home. They may be packaged together but are frequently installed separately from one another. The average cost of a 4-ton AC unit and a furnace sized for the same area (3,000 sq.ft.) averages $10,000 to $19,000 installed. Having both installed at the same time can potentially give you a discount. Speak to your HVAC provider for more information.

Additional Considerations and Costs

  • Lifespan. Most central air units last between 15 and 20 years with regular maintenance.
  • Maintenance. Central AC maintenance involves changing the filter every season and having yearly inspections and service done by our HVAC rep.
  • Top manufacturers. Many reputable brands produce 4-ton AC units, including Trane, Carrier, Lennox, Goodman, Bryant, Ruud, Coleman, and Amana.
  • Mounting. The compressor for your AC unit is installed outdoors on a concrete pad. If you need a new pad, this can increase your costs.
  • Permit. Permits may be required for this installation in some areas. Speak to your local municipality for more information.
  • Rebates. Some manufacturers offer rebates to help lower your costs. In some areas, you may also get rebates for installing a higher-efficiency unit. Speak to your installer about what rebates may be available in your area.


  • How much does a 4-ton package unit cost?

A 4-ton package unit costs between $10,000 and $12,500 fully installed.

  • How much is a 4-ton HVAC?

A 4-ton HVAC system costs $6,000 to $11,000, depending on whether you are packaging the units or are installing them separately.

  • How many square feet will a 4-ton AC unit cover?

A system of this size cools more than 3,000 sq.ft. The exact amount varies based on insulation and climate.