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Heating Repair & Maintenance

When your heating system isn’t working as it should, you need fast, reliable service from a team you can trust. At Althoff Home Services, we offer expert heating repair and maintenance services to homeowners in Crystal Lake and the surrounding Chicago suburbs. Our goal is to restore your comfort quickly and help prevent future breakdowns with thorough, professional care.

  • 24-hour emergency service
  • We provide quotes before performing service
  • 100% satisfaction guarantee

From emergency repairs to routine tune-ups, our skilled technicians are here to keep your furnace, boiler, or heat pump running safely and efficiently all winter long.

Proudly serving the Crystal Lake area for over 60 years! 

What should I do when my heater stops working?

If your heating system stops working, follow these steps:

  1. Check basics first – verify thermostat settings, replace clogged air filters, and reset any tripped circuit breakers.
  2. Call for emergency repair – if basic checks don’t restore heat, contact a 24/7 heating repair service.
  3. Request a diagnostic and quote – a technician will identify the issue and provide a clear repair estimate before starting work.
  4. Consider a maintenance plan – regular inspections and tune-ups help prevent breakdowns and improve efficiency.

What to Do If Your Heater Fails During the Winter

A sudden heating failure in the middle of a cold Illinois winter can be stressful, but don’t panic. At Althoff Home Services, we provide fast, 24-hour emergency heating repairs to get your system back up and running when you need it most. If your heater shuts down unexpectedly, start by checking your thermostat settings, ensuring the circuit breaker hasn’t tripped, and replacing the air filter if it’s clogged. If those basic steps don’t restore heat, call our expert team right away.

Our licensed technicians will arrive promptly, diagnose the issue, and explain your repair options clearly. We provide upfront quotes before performing any service, so you’re never caught off guard. Whether it’s a furnace, boiler, heat pump, or ductless unit, we have the tools and expertise to handle any common furnace repair emergencies. When your comfort is on the line, Althoff Home Services is the name Crystal Lake homeowners trust.

These Warning Signs Will Tell You of a Heating System in Trouble

Your heating system often gives off warning signs before it fails completely. Recognizing these early indicators can save you from bigger problems and higher costs down the road. At Althoff Home Services, we urge homeowners to call at the first sign of trouble so we can fix issues before they become emergencies.

Watch for uneven heating, strange noises like banging or screeching, a yellow or flickering pilot light, or a system that runs constantly without maintaining a consistent temperature. An unexpected spike in your energy bill is another sign your furnace needs repair. If your system is short-cycling or producing weak airflow, don’t wait, schedule a service visit. Our skilled technicians will thoroughly inspect your system, explain what’s happening, and make the necessary repairs to keep your home safe and warm.

Maintenance Is the Best Service You Can Schedule for Your Heater

The best way to avoid unexpected breakdowns and keep your heating system running efficiently is with regular maintenance. At Althoff Home Services, we offer comprehensive tune-ups that include cleaning, safety checks, performance testing, and adjustments to ensure your system is ready for winter. And for the best long-term value, we recommend joining our White Glove Club.

White Glove Club members receive annual heating maintenance, priority scheduling, and special discounts on repairs and services. It’s the easiest way to protect your investment, extend the life of your heater, and enjoy peace of mind all season long. Regular maintenance not only improves comfort, it also keeps your energy bills under control. Trust Althoff Home Services to deliver the expert care your system needs—whether you’re maintaining an older unit or planning a professional heating system installation.

Frequently Asked Questions

Question: What types of heating systems does Althoff repair and maintain?
Answer: Althoff handles furnaces, boilers, heat pumps, ductless systems, and radiant heating units. Whatever system your home uses, they have the expertise to repair, maintain, or replace it.

Question: Does Althoff offer emergency heating repair services?
Answer: Yes, they provide 24-hour emergency heating repair services to address unexpected breakdowns, especially during cold weather, aiming to restore your comfort quickly.

Question: What are the warning signs that my heating system needs repair?
Answer: Common signs include uneven heating, strange noises, a flickering pilot light, rising energy bills, short cycling, or weak airflow. These issues often indicate that repairs are needed.

Question: What does routine heating maintenance include, and why is it important?
Answer: Routine maintenance includes cleaning internal parts, checking safety features, testing performance, and making necessary adjustments. It helps prevent breakdowns, improves efficiency, and extends the system’s lifespan.

Question: When should I replace my heating system instead of repairing it?
Answer: Replacement is often recommended if the system is 15 to 20 years old, needs frequent repairs, is inefficient, or has major safety concerns like a cracked heat exchanger.

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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