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Installation & Upgrades
Unico AC System

Our licensed HVAC technicians offer all the cooling services you need to keep the air conditioner in your Chicago home running efficiently all summer long. We are proud to offer our air conditioning service in Chicago and the Northwest suburbs, including Crystal Lake, Arlington Heights, Elgin, Schaumburg, Aurora, Naperville, and Woodstock.

Chicago Air Conditioning Repair

Our Expert HVAC Technicians Can Get You Back to Cool Comfort, Fast

When your air conditioner malfunctions or stops working completely, call on our reliable A/C technicians for cooling system repairs. If your system stops blowing cool air, refuses to turn off/on or makes strange noises, our licensed technicians can find and fix the problem fast.

Emergency Air Conditioning Repair in Chicago and the Northwest Suburbs

If your cold air goes out on a blistering hot day or your A/C unit is making a noise that’s got you worried, we offer 24/7/365 emergency service. We have two locations to provide faster service. We're here for you.


Air Conditioning Repair Process

Use this form or call us at (815) 455-7000 to request a repair. You will speak to a friendly Customer Service Rep to find a convenient time that works with your schedule. We offer a 2 hour time window for our customers in the suburbs and a 3 hour time window in the City.

We understand your schedule is very busy. Don’t wait at home. Our dispatchers will call you when our technician actually is on his or her way to your home.

Our expertly trained technicians begin with a thorough evaluation of your equipment. We’ll diagnose the immediate problem but also examine the entire system to determine if there are any underlying issues or potential hazards.

Once the diagnosis is complete, our technician will prepare a prioritized list of recommendations and pricing. All recommendations are explained so that you understand exactly what the problem is and how much it’s going to cost. We never perform any repairs without first getting your approval.

We understand that many A/C repairs just can’t wait. In most cases, your technician can get the part needed from our fully stocked trucks or a nearby warehouse. Our goal is to get your equipment fixed that day.

Once complete, our technician will again walk you through all the work performed and recommendations he or she has moving forward. You will be left with a detailed service ticket describing work performed and associated billing.

Your opinion is so important to us. You can be sure that we’ll use your valuable feedback in our ongoing goal to provide the best possible service.

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Chicago Air Conditioning Maintenance

Just One Tune-Up a Year Can Save You Money, Prevent Breakdowns & Extend the Life of Your HVAC System

By scheduling an air conditioning tune-up, you’re proving yourself a smart and proactive homeowner! A/C tune-ups help lower your energy bills and prevent breakdowns by identifying worn parts and potential issues.

According to EnergyStar.gov, you should have an A/C tuneup at least once a year to keep your system running efficiently and your bills low.

What’s Included in Your A/C Tuneup?

Our licensed HVAC technician will start by asking you a few brief questions about your system’s performance and if there are any special concerns you have. From there, he or she will perform an inspection and tune-up.

All inspections include a service report with a prioritized list of recommendations (if necessary).

Chicago Air Conditioner Installations & Upgrades

Get the Best A/C 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 through the hottest days of summer.

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?

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.
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 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.
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!
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.”

A/C Installation & Replacement Steps

Use this form or call us at (815) 455-7000.

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.

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.

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!

Air Conditioning Equipment 

unico-logoUnico Preferred Contractor

The Unico System is a small duct, high-velocity HVAC system that’s ideal for older homes with no central A/C, as well as custom-built homes. It can be discreetly retrofitted into classic homes or designed into new construction without the need for extensive remodeling or conventional ductwork.

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daikinDaikin Comfort Specialist

As an authorized Daikin dealer, we’re proud to install Daikin central A/C 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.


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Experience You Can Trust for Your A/C Repairs and Installation

Althoff has been repairing, installing 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 technicians
  • 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

Our licensed HVAC technicians will arrive at your home within a convenient 2-hour window (we always call when we're on the way), and we'll park our clearly marked service truck in clear view of the house. We'll be easy to recognize in our clean uniform and name badge as we greet you with a business card and a smile. Once we've been given permission to enter your house, shoe covers go on our feet and drop cloths go under our tool bags.

In short, we respect your time and your home. We do everything we can to make your A/C service call convenient and comfortable.




"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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