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Most central air conditioner replacements in Lisbon, IL cost $5,000 to $9,500 installed, and replacing the furnace at the same time typically runs $9,000 to $16,000. Where your price lands depends on the size of your home, the efficiency you choose and how complex the installation is.
The range is wide because every installation is different. Replacing an air conditioner means choosing the right size for your home and the right efficiency for how long you plan to stay, and making sure the ductwork, electrical and indoor coil are ready for the new air conditioner.
Here is what decides the price of a new air conditioner in Lisbon, and how to keep it down.
What Determines AC Replacement Costs in Lisbon?
No two AC systems or homes are the same. Here’s a look at what drives your total replacement cost and how to prepare.
1. Size and Layout of Your Home
AC units are sized based on your home’s cooling needs. This is measured in tons, not weight, but cooling capacity. One ton cools roughly 400 to 600 square feet. The larger the house, the more cooling power you need, and the more expensive the unit.
- Small home (1,000 to 1,500 sq ft): Lower end of the price range
- Mid-sized home (1,500 to 2,500 sq ft): Mid-range systems
- Large home (2,500+ sq ft): Higher end of the price range
Installing the wrong size AC is a costly mistake. An undersized unit will overwork itself, while an oversized system will cycle too often, wasting energy.
2. Type of Air Conditioning System
Several kinds of AC systems are available, and your choice will significantly affect the installation and long-term operating costs.
- Split central air systems are the most common. These include a condenser outside and an air handler inside.
- Ductless mini-splits are ideal for homes without existing ductwork.
- Packaged units are often used in commercial or small residential settings.
- Heat pumps can replace both heating and cooling systems but come with a higher upfront cost.
Each system has its own benefits and cost considerations. If you’re unsure what works best for your space, local experts like EZ Air can help you conduct a proper assessment and recommend a solution that balances performance, efficiency, and long-term value.
3. Brand and Efficiency Rating
A higher SEER (Seasonal Energy Efficiency Ratio) means better energy performance. It also means a steeper initial investment. But the long-term savings on your utility bill could be significant.
Our good, better and best air conditioners run from a 14.3 SEER2 single-stage model at $5,000 to $6,500 to a 17+ SEER2 variable-speed model at $8,000 to $9,500.
4. Labor and Installation Challenges
Your AC unit isn’t just dropped into place. Labor costs include:
- Removing the old unit
- Adjusting or replacing ductwork
- Electrical upgrades
- Placing the new unit correctly
- Testing the system
If your system is hard to access, if you live in a multi-level home, or if modifications are needed to fit your new system, the labor cost rises. EZ Air’s AC replacement team installs every new air conditioner safely and to code.
Why AC Replacement Is More Than a Price Tag
A new air conditioner should keep your home cool for the next 10 to 15 years. Here is what you get for the money:
- Better indoor air quality: Newer systems come with upgraded filtration options.
- Lower energy bills: Even a mid-tier modern unit uses far less electricity than one from ten years ago.
- Fewer breakdowns: Frequent repairs add up. At some point, replacement saves more than fixing.
- Home value boost: A new AC system can improve the resale value of your home in a competitive market.
Smart Ways to Save on AC Replacement in Lisbon
A few ways to keep the cost of a new air conditioner down:
- Request multiple quotes: Don’t settle for the first estimate. Ask detailed questions and compare.
- Install during off-season months: Winter and early spring often come with promotional pricing.
- Ask about rebates: ComEd gives instant discounts of up to $2,000 in 2026 on qualifying heat pumps, and Nicor Gas pays $150 to $225 on high-efficiency furnaces. Standard central air conditioners do not get a ComEd rebate this year.
- Finance the difference: EZ Air offers financing through Synchrony, subject to credit approval, so you can replace your AC now and pay over time.
Even if the sticker shock feels heavy upfront, keep the long-term math in mind. Your new system will serve your home for the next decade or more.
AC Replacement in Lisbon, IL You Can Trust
Who installs your new air conditioner matters as much as the equipment you choose.
At a free in-home estimate, EZ Air sizes your new air conditioner to your home, walks you through the good, better and best options that fit it, and confirms your price in writing before any work begins.
If your home is ready for a new air conditioning system, call EZ Air to schedule an in-home estimate for AC replacement in Lisbon. You’ll get expert insight, upfront pricing, and a cooling solution that fits your needs and your budget.
Frequently Asked Questions About AC Replacement
1. How Do I Know if I Need a Full AC Replacement?
If your system is over 10 years old, breaking down frequently, or no longer energy efficient, replacement might be more cost-effective than ongoing repairs.
2. What Size AC Unit Does My Home Need?
That depends on your home’s square footage, insulation, and layout. An HVAC professional will perform a Manual J load calculation to determine the proper size.
3. How Long Does AC Replacement Take?
Most standard installations are completed in one day. Complex setups or additional modifications may take longer, especially if ductwork adjustments are needed.