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Most central air conditioner replacements in Morris and nearby Grundy County towns cost $5,000 to $9,500 installed. Replacing the furnace at the same time typically runs $9,000 to $16,000. The difference between the low and high end comes down to the efficiency you choose, the size of your home and the condition of your ductwork.
AC Installation Cost: Good, Better & Best
Typical installed prices for an average size home with ductwork in good shape, including equipment, labor and startup.
| Option | What you get | Typical installed cost |
|---|---|---|
| Good | 14.3 to 15 SEER2 single-stage air conditioner | $5,000 to $6,500 |
| Better | 15.2 to 16.9 SEER2 two-stage air conditioner | $6,500 to $8,000 |
| Best | 17+ SEER2 variable-speed air conditioner | $8,000 to $9,500 |
| Full system | Air conditioner and furnace replaced together | $9,000 to $16,000 |
What Each AC Option Includes
Good: Standard Efficiency Air Conditioner
A 14.3 to 15 SEER2 single-stage air conditioner runs at full speed whenever it runs. It has the lowest upfront cost and is a good fit when the furnace is newer, the ducts are sound and you plan to move within a few years.
Better: High Efficiency Two-Stage Air Conditioner
A 15.2 to 16.9 SEER2 two-stage air conditioner runs on its low stage most summer days. That means steadier temperatures, more humidity pulled out of the air on muggy days and lower electric bills than a standard model. For most homes, it is the best balance of price and comfort.
Best: Variable-Speed Air Conditioner
A 17+ SEER2 variable-speed air conditioner adjusts its output in small steps to match the heat of the day. It gives the most even temperatures, the quietest operation of the three and the lowest electric use.
What Changes The Price Of A New Air Conditioner
- Home size and tonnage. Moving from a 2-ton to a 4-ton air conditioner adds about $1,000 to $2,000 in equipment. We size every system with a load calculation rather than matching the old unit.
- Ductwork. Leaky or undersized ducts can waste 20% to 30% of the air you pay to cool. Sealing or repairs usually add $500 to $2,000.
- Electrical. An older panel or an undersized circuit may need updating for a new outdoor unit.
- Access. An indoor coil in a tight attic or crawlspace, or a long refrigerant line run, adds labor.
- Replacing the furnace too. If your furnace is 12 or more years old, replacing both at once gets you matched equipment and one install day.
Rebates & Financing
ComEd’s 2026 program does not include rebates on standard central air conditioners. It does offer instant discounts of up to $2,000 on qualifying heat pumps installed by a ComEd heat pump-trained contractor, which is why many homeowners compare a heat pump installation with a new AC. If you replace the furnace at the same time, Nicor Gas pays $150 for a furnace rated 95% AFUE or higher and $225 at 97% AFUE or higher.
EZ Air also offers financing through Synchrony on new systems, with installment loans, interest promotions and fixed APR options, subject to credit approval.
AC Installation Cost In Morris, Minooka, Channahon & Nearby Towns
These prices apply across the towns we serve from our shop on Cemetery Road in Morris. Many Minooka and Channahon homes were built in the 1990s and 2000s and still run their original air conditioners, so a lot of those systems are now due for replacement. Both Minooka and Channahon require a permit to replace an air conditioner. See AC installation in Morris, AC installation in Minooka and AC installation in Channahon.
Which AC Option Is Right For Your Home?
- Choose Good if you plan to move within a few years or the budget is tight.
- Choose Better if you plan to stay and want steadier comfort and lower bills. It is the best fit for most homes.
- Choose Best if the most even temperatures and the lowest electric bills matter most to you.
Questions We Get Asked About AC Installation Costs
How much does a new air conditioner cost in Morris, IL?
Most central air conditioner replacements around Morris cost $5,000 to $9,500 installed. A standard 14.3 SEER2 air conditioner sits at the low end, a two-stage model in the middle and a variable-speed model at the top.
Is a higher SEER2 air conditioner worth it?
The step from Good to Better is usually the best value: steadier temperatures, better humidity control and lower electric bills. The step to Best makes the most sense if you want the most even comfort and the lowest bills.
How long does AC installation take?
Most air conditioner replacements are finished in one day. Replacing the furnace at the same time, or adding ductwork or an electrical upgrade, can add a day.
Do I need a permit to replace my air conditioner?
In Minooka and Channahon, yes. Both require a permit to replace an air conditioner. Ask us about the permit rules in your town when we quote your installation.
Is the calculator price my final quote?
No. The calculator gives a planning range based on typical installations in Morris and nearby towns. We confirm your exact price in writing at a free in-home estimate before any work begins.