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Don’t Get Left in the Cold: Our Expert Furnace Technicians Can Find and Fix the Problem Fast

If your furnace isn’t heating your home the way it should, is making strange noises or odors, or has even stopped working entirely, it needs attention fast. Trust our reliable and professional furnace repair technicians to get you back to warm comfort quickly.


Emergency Furnace Repair

If your furnace goes out on a frigid winter day, we offer 24/7/365 emergency serviceWe have two locations to provide faster service.  We're here for you.

Furnace Repair Process

  1. Schedule the Repair – Use this form or call us at (815) 455-7000 to request a furnace repair. You’ll speak with a friendly Customer Service Rep to schedule a convenient time that works for you. We offer a 2 hour time window for our customers in the suburbs and a 3 hour time window in the City.
  2. We’ll Call You On the Way – We understand your life is busy. Our dispatchers will call you when our HVAC technician is actually on his or her way, so you don’t have to wait at home.
  3. We Begin With a Thorough Evaluation – Our expert technicians start with a thorough evaluation of your furnace equipment. We’ll diagnose the immediate problem but also examine the entire heating system to determine if there are any underlying issues or potential hazards.
  4. Prices Are Quoted Upfront – Once the diagnosis is complete, our technician will provide a prioritized list of recommendations and pricing. He or she will explain all recommendations so you know exactly what the problem is and how much it’s going to cost to fix it. We never perform any repairs without your approval.
  1. Get Your Furnace Repaired the Same Day – 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 furnace fixed that day.
  2. Walk Through of Work Performed – Once complete, our technician will walk you through all the work performed and any recommendations moving forward. You’ll receive a detailed service ticket describing the work performed and associated billing.
  3. Let Us Know How We Did – Your opinion means the world to us. You can be sure that we’ll use your valuable feedback in our continual goal to provide the best possible service.
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Furnace Emergency?
Call Now (815) 455-7000

Experience You Can Trust for Your Furnace Repairs

Althoff has been taking care of customers in the Greater 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
  • Free estimates on equipment replacements
  • Quality brands and products you can trust
  • Ongoing training in our state of the art training lab
  • We clean up when we’re done
  • Variety of payment options available
  • 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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