Central air installation in an older Illinois home depends on five things: unit size, BTU and SEER rating, square footage, the season you install, and labor and material costs. Homes with no existing ductwork pay more, because the ducts go in first. Elite HVACs installs central air across northern Illinois and gives you the number up front.
Key Points
- Five factors drive central air installation cost: unit size, BTU and SEER rating, square footage, season, and labor and materials.
- The average cost of a central air conditioning system runs into the thousands of dollars.
- Higher BTU and SEER capability means a pricier unit.
- Old homes without ductwork cost more, since duct installation and infrastructure come first.
- A ductless mini split is the alternative when adding ductwork is not practical.
How Much Does Central Air Installation Cost?
The average cost of a central air conditioning system is thousands of dollars. Several factors move that number up or down:
- Size of the unit
- BTU and SEER rating
- Your home’s square footage
- Time of season for installation
- Labor and material costs
Unit Size and Square Footage
Your home’s square footage determines the size of the system it needs. A larger home requires more cooling capacity, and a larger air conditioner carries more BTU capacity.
Sizing the unit correctly matters more than buying the largest one available. Our NATE-certified technicians size the system to your home before quoting a central air installation, so you are not paying for capacity you do not need.
BTU and SEER Rating
BTU measures the energy needed to remove heat from your home. SEER rating is the ratio of cooling output from the air conditioner, and the U.S. Department of Energy explains how both ratings affect efficiency.
The more BTU and SEER capability a unit has, the more it costs upfront. Higher efficiency ratings tend to reduce what you spend on energy over the life of the system.
Season, Labor, and Materials
Time of season for installation affects the price. Demand for central air installation climbs once Illinois summers arrive, and scheduling outside that window generally works in your favor.
Labor and material costs round out the total. Both shift with how complex the job is and what your home already has in place.
Can You Install Central Air in an Old House?
Yes, you can install central air in an old house. The cost rises when there is no existing ductwork, because you pay for proper duct installation and infrastructure first.
When Ductwork Has to Be Added
Older homes without the framework to support a central air conditioner need additional renovations, such as new ductwork. That work happens before the system goes in, which is why central air installation costs more in a home that has never had it.
A full AC installation and replacement in a northern Illinois home of that age takes planning. We walk you through the scope in plain language before any work starts, so nothing catches you off guard.
When a Ductless Mini Split Makes More Sense
A ductless system, also called a mini split, is the alternative. It saves money on more energy-efficient performance and skips the ductwork entirely.
Many older Skokie and North Shore homes go that route, especially when the layout makes running ducts impractical. Our team also handles heat pump installation and replacement for homeowners choosing that path.
Frequently Asked Questions
What affects central air installation cost the most in an old home?
Missing ductwork is the biggest cost driver. When an older home has no ducts, duct installation and the supporting infrastructure get added on top of the unit and labor. Unit size, BTU and SEER rating, and square footage move the total as well.
What size central air system does my home need?
Size depends on your home’s square footage and the BTU capacity required to remove heat from it. A larger air conditioner carries more BTU capacity, but bigger is not automatically better. Our technicians assess the home first and size the system to it.
Is a ductless mini split cheaper than central air in an older house?
A mini split avoids the cost of installing ductwork, which is often the largest expense in an older home. It also delivers more energy-efficient performance. Whether it comes out cheaper overall depends on your home’s layout and how many rooms need cooling.
Does the time of year change what I pay?
Yes. Time of season for installation is one of the five factors that affect the final price. Scheduling outside peak demand generally works in your favor.
Do you offer free estimates on central air installation?
Yes. Call 773-312-9090 for a free estimate on central air installation. Our technicians are available 24/7, and every visit is backed by a service warranty.
Call Elite HVACs for Central Air Installation
If you want a central air unit for your home, call us at 773-312-9090 for a free estimate. Our HVAC technicians are available 24/7 for air conditioning repair services, with same-day service available when your system quits in the middle of a heat wave.
Once the system is in, seasonal AC maintenance visits protect the efficiency you paid for. We service all major brands and back every visit with a service warranty.
We specialize in residential HVAC systems for older and newer Illinois homes. You will notice stronger-performing air conditioning units and lower energy bills. Request a free estimate and we will size the right system for your home.