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Get the Best AC Unit for Your Needs and Budget: Expertly Installed and 100% Satisfaction Guaranteed

If you need a new or more energy-efficient air conditioner replacement, we can help you find the right HVAC upgrade for your Chicago home that will keep you comfortable during even the hottest days of summer.

As an authorized Trane dealer, we’re proud to install Trane central AC units with SEER ratings between 13 and 18 or more. These high efficiency units help lower your monthly energy bills while giving you outstanding reliability and durability.

2 Year 100% Satisfaction Guarantee

If you aren’t 100% satisfied with your new HVAC system in the first 2 years, we will do everything we can to remedy the situation for you. If we can’t, we will remove the system we installed and install a brand new system at our expense.

Do I Need a New Air Conditioner?

  • Age of Current Unit - Our experience tells us that the average unit life expectancy in our area is 15 years. If your equipment is over 10 years old and experiencing any of the below behaviors, you should consider replacing instead of repairing.
  • Frequent and/or Expensive Repairs - If your A/C is starting to need repairs on an almost annual basis, it’s near the end of its lifespan.
  • Out of Warranty Repairs - Out of warranty repairs due to compressor failure, evaporator coil leaks or condenser coil leaks. All of these repairs are going to cost you between $1,000 and $2,000 to repair. It's not worth investing that much into a unit over 10+ years old.
  • Home Isn't Comfortable - Do you have a hard time keeping your home cool? This could be the sign of an aging air conditioner, or even an incorrectly sized system. Regardless of the cause, you want your air conditioner to do its job!
  • High Utility Bills - According to the Department of Energy, “Today's best air conditioners use 30% to 50% less energy to produce the same amount of cooling as air conditioners made in the mid 1970s. Even if your air conditioner is only 10 years old, you may save 20% to 40% of your cooling energy costs by replacing it with a newer, more efficient model.”

AC Installation & Replacement Steps

  1. Request a Free Estimate – Use this form or call us at (815) 455-7000.
  2. Book a Consultation Appointment - Before looking at replacement units, we’ll schedule a consultation with you so we understand your budget and unique home comfort needs. We offer flexible times that are convenient for your schedule.
  3. Receive Upfront Options & Pricing That Fit Your Needs – Our highly trained Comfort Advisors will measure and evaluate your home, then present options based on the systems that match your needs. All pricing is quoted upfront with no surprises.
  4. Have Your New System Installed – We make it a priority to install your system as soon as possible, according to your schedule. In most cases, we’re able to make it happen within 24 hours!
  5. Enjoy Maximum Comfort

Experience You Can Trust for Your AC Installation

Althoff has been installing, replacing, and upgrading air conditioners in the Chicago area for nearly 60 years.

  • Family owned and operated
  • Licensed, insured, and bonded
  • True 24 hour service
  • Live phone operators and staff
  • Employees drive marked vehicles and wear a uniform & ID badge
  • We quote firm prices upfront
  • We install only quality brands and products
  • Professionally trained installers
  • Ongoing training in our state of the art training lab
  • We clean up when we’re done
  • We offer a variety of payment options
  • Satisfaction guaranteed


"Matt knows our systems and definitely knows what he is doing. We have total confidence when he leaves that everything is done correctly."

~ T.S from North Barrington, IL


"Althoff's is a very good company who always gives great service and timely service by well-trained technicians. We are delighted to do business with this company!!"

~ R.G. from Crystal Lake, IL


"The tech was on time, efficient, and extremely knowledgeable. I would definintly use this individual again, if or when I need this kind of help."

~ M.S. from Crystal Lake, IL


Let Our Customers Tell You How Great We Are

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