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Air Conditioning Repair

Serving Crystal Lake, Hillside, and the Northwest and Western Suburbs

When your air conditioner stops working, you deserve more than a quick fix – you deserve service you can truly rely on. At Althoff Home Services, we deliver a higher standard of air conditioning repair for homeowners in Crystal Lake, Hillside, and the surrounding Chicago Suburbs. With a focus on craftsmanship, clear communication, and lasting results, our team restores your comfort quickly and with care.

Signs your Air Conditioner Needs Repair

You know it’s time to hand it off to Althoff when your system isn’t keeping up. Our technicians don’t just restore airflow – we perform a thorough diagnostic to uncover the root cause, whether it’s a failing component, refrigerant issue, or electrical concern. That means reliable, lasting comfort when you need it most.

Call for professional repair if you notice:

  • Warm Air: Your system is running, but the air from your vents isn’t cool.
  • Unusual Noises: Grinding, squealing, or banging sounds from your equipment.
  • Short Cycling: Your system turns on and off more frequently than normal.
  • Moisture or Ice: Water leaks or ice buildup around your indoor or outdoor unit.
  • Rising Energy Bills: Your system is working harder to deliver the same results.

Our NATE-certified technicians do more than just restore airflow. We perform a thorough diagnostic to identify the underlying issues, such as failing capacitors, refrigerant leaks, or electrical imbalances. By addressing the root cause, we ensure your home remains cool throughout the peak of the summer.

Urgent Need? Use the Althoff Fast Pass

We understand that a broken air conditioner during a summer heatwave can feel urgent. For homeowners who need priority service, our Fast Pass program provides a faster, more streamlined solution.

When you request a Fast Pass, you bypass the standard scheduling queue. We send the next available technician to your home in Crystal Lake, Hillside, or the surrounding Chicago suburbs to help restore your comfort as quickly as possible.

Call (815) 200-4457 to request a Fast Pass dispatch!

The Complexity of Modern Cooling Systems

Air Conditioning systems are complex, and even small repairs can be risky without the proper training and tools. Attempting a DIY fix–or hiring someone who isn’t an HVAC specialist–can lead to costly mistakes or safety hazards.

Ac units involve high-voltage electricity, refrigerants, and sensitive electronics, all of which require proper certification and experience to handle safely. Many homeowners who try to fix their own units end up with bigger problems down the line.

Professional HVAC technicians have the training and equipment to perform repairs safely and effectively, helping ensure your system runs reliably.

Keep Your AC Running Like New

Protect your air conditioner and keep it performing like new with the Althoff Home Services Home Comfort Membership. Designed for homeowners in Crystal Lake, Hillside, and the surrounding suburbs, our membership helps you prevent unexpected breakdowns, save money, and enjoy year-round comfort.

Membership Benefits

  • Priority Service: Preferred scheduling when you need us most
  • Lifetime Warranty on Service Repairs*
  • No Overtime Repair Charges: HVAC, Plumbing, and Electrical services (service fee applied to repairs during normal business hours)
  • Two HVAC Maintenance Visits Each Year
  • Rewards Program: Earn 1 point for every $1 spent
  • 20% Savings on HVAC Repairs

With this membership, you’re not just maintaining your AC–you’re getting reliable service, exclusive savings, and peace of mind knowing your home is in expert hands

Sign Up for the White Glove Club Today!

Hand it off to Althoff for Air Conditioning Repair

Do not spend another hour in an uncomfortable home. Contact our team today to experience the difference that professional care and rapid response make for your family’s peace of mind.

What Are Other Homeowners Saying?

Excellent
Althoff Home Services4.8
Based on 1074 reviews
I had a very nice young man for my technician. He checked and cleaned everything and told me all was well. Of course that made me happy. The technician was here to clean and check my heating system for the winter
Fred Ichinose
5 days ago
Super responsive, communicative, informative, friendly, competitive and got the job done well. Highly recommended.
Renee Lucas
5 days ago
Great experience the air-conditioning was fixed quickly and Brian did a great job
L
6 days ago
We are so pleased with the work Victor and Braden did-- professional, friendly, fast, and with great explanations. We could not be happier with their work, as we always are with your company's work. The Daikin unit is working perfectly, keeping our open concept kitchen, family room, music room, and dining room a uniform, warm temperature. THANKS!!!
Mike Weber
1 week ago
Very efficiently did the maintenance. Couldn’t have asked for more. Very satisfied as usual.
Richard Elke
1 week ago
Scott was very professional. He explained all of our options and costs. He inspected our sub pump.
Renee Diak-Witek
2 weeks ago
Very friendly and knowledgeable about anything I needed to know.
Steve Kolasa
2 weeks ago
Quality service and work !!! Clean and very informative about our AC and Furnace !!! Alex did a fantastic job !!!!
Catherine A
2 weeks ago
Scott was prompt, very pleasant and did a great job!
Gwen
3 weeks ago
Extremely pleased with this company and the employees I dealt with so far.
excellent service - professional and friendly. Andres was the best!
Daniel Bochneak
3 weeks ago
Regular interval preventive maintenance check-ups performed by a Althoff's HVAC professional assures that our HVAC system is safe and functioning with the level of efficiency necessary to maintain our household comfort and safety. We have used Althoff Home Services for several years and have always been extremely satisfied with their services. Our Althoff technician Scott is a trusted expert in his profession. We appreciate his diligence and attention to detail that has meaningfully contributed to our home's comfort & safety.
Jason Schumaker
3 weeks ago
Scott White is fantastic
Jim Andrulis
3 weeks ago
Althoff repairman advised me of a problem with my a/c. He gave me some options for repair and the cost estimates. They even sent another man to offer quotes for a whole system replacement. i appreciated the options with no pressure.
Cathy Wilkins
4 weeks ago
We had our A/C inspection today. Nick A on the Althoff Home Services A/C team arrived and checked everything inside and out. Nick was very courteous, polite, friendly and thorough. We were very pleased with his professionalism. This service is included in our annual membership. The office staff and technicians at Althoff Home Services are the reason we have had them servicing our homes since 2002.
Greg M.
4 weeks ago
Thorough check and clean of Furnace and Humidifier. The contact with the office and the work performed by Justin were both done in a professional manner. Thank you.
April Strong
4 weeks ago
He's friendly and efficient. The perfect combination!
Gary Newland
1 month ago
I appreciate the attention and professionalism. Thank you!
Mandy Bone
1 month ago
Althoff has helped us with our boiler system as well as our AC unit. They have repaired old units we had and even installed new ones when we needed. Everyone we worked with was kind, professional, and knowledgeable about the products.
Had difficult bulbs to replace and find they did it a short period of time and the installation was flawless
David Schaak
2 months ago
Very good and informative worker. You could tell that he enjoyed the work.
Melissa Mikos
2 months ago
Matthew was such a pleasure to work with. He explained everything in layperson terms. Which I appreciated because I was extremely stressed out from the whole issue at hand. He gave me several different options to deal with the water damage and diagnose the source of the problem. of the leak. In conclusion, I would and will go to Altoff for all my future plumbing needs.
Ouzelfalls
2 months ago
I recently switched to Altoff Services to do my annual A/C and Heater maintenance. They came this week to do the A/C. they did a thorough job in testing my A/C's cooling efficiency. they tested refrigerant levels.They removed the outside unit's shroud and thoroughly cleaned the unit. This was the first time anyone did that. I was very happy with the work they did.
Chris Warren
2 months ago
We use Althoff Home Services for almost all of our HVAC, Plumbing, and Electrical needs. Pros: - It is easy to schedule an appointment with them. If you are a member of their White Glove Club, you get priority scheduling. - They spend time explaining the work they perform and any recommendations they have. - Their pricing is transparent. Everything is quoted and sent via email, so you know what you are paying every time they come to your house. - Their employees do not work on commission, so there are no high-pressure sales tactics unlike some of their competitors. Cons: - Some of their services are a little expensive. I would hire a handyman to do things like re-seat a toilet or replace a faucet in lieu of hiring of one of their professional plumbers. - They charge to come out to your house to give pricing estimates, but will deduct this from your bill should you choose to use them. I highly recommend Althoff’s and their team of professional staff!
John Ruder
2 months ago
Always a pleasant experience when Todd comes for the annual inspection of the ROZ Valve. Polite, good conversation, explains what’s being done.
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