Heating and Cooling Services in Lake County, IL

Flat-rate pricing, no after-hours upcharges, and same-day service — from Beach Park to Northbrook and every community in between. Kern has been serving Lake County since 1936.

Call (847) 383-0350 →

Don’t Wait Till Monday — We’re Open on Sunday. | Flat $99 service call — same price at 2am Sunday as noon Tuesday.

Serving all of Lake County and The North Shore

Click your city to learn more about heating and cooling services in your area — the same flat-rate pricing and guarantees, wherever you are.

Services We Offer Throughout Lake County

The same expertise and guarantees, wherever you are.

Air Conditioning

Keep your home cool with expert installation, rapid repair, and seasonal inspection all in one place.

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AC Repair & Maintenance

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New AC Installation

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Mini-Splits

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Heating

From traditional furnaces to boilers and heat pumps, we ensure your family stays warm.

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Furnace Repair

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Boiler Services

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New Furnace Install

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Indoor Air Quality

Breathe easier with whole home solutions designed to remove allergens and control humidity.

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Duct Cleaning

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Humidifiers

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Water Heaters

Never run out of hot water again. We service traditional tanks and modern tankless systems.

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Tankless Install

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Traditional Hot Water Tank

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Emergency Leaks

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EXPERIENCE THE KERN DIFFERENCE

Why Lake County
Chooses Kern

Flat-Rate Pricing — Always

One price, any time of day or night. No surprise charges for after-hours or weekend calls — ever.

We're Open on Sunday

Most companies aren't. We are — at the exact same rate as any other day of the week.

95% Fixed Same Visit

Every truck is a rolling warehouse. We carry the parts to resolve most issues on the spot.

Industry-Leading Warranties

100% satisfaction guaranteed. Flexible coverage with extended warranty options.

Call (847) 383-0350 →

4.7 STAR RATING ON GOOGLE

What Your Neighbors are Saying

    
 
 
       Posted on Google  
   
   Michael Derohan 
 
 
 
 Trustindex verifies that the original source of the review is Google. They were friendly and knew what they were doing. I will definitely call Kern again.
  
 
      Posted on Google  
   
   Jacob Schouten 
 
 
 
 Trustindex verifies that the original source of the review is Google. Sergio and his partner did an excellent job installing our new furnace and water heater. They were very professional and explained the new systems as well as how to turn them off and on, where the filter was and how to replace them. As well as showed me how to use the new thermostat and how to troubleshoot it if I run into issues. Will definitely e calling again when we need to do seasonal maintenance and get a new AC unit installed. Thanks guys!
  
 
      Posted on Google  
   
   R Jones 
 
 
 
 Trustindex verifies that the original source of the review is Google. Keen representative was awesome. Anything or question we asked we got a perfect answer.
  
 
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   Scott Fitch 
 
 
 
 Trustindex verifies that the original source of the review is Google. Technician Gustavo V. was very professional, and I feel did a great job on my AC/furnace work. I always request Gustavo; he is very competent and professional. 4/08/26 Another great service call from Gustavo at Kerns for my Fall Furnace check-up.
  
 
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   Karen Byers 
 
 
 
 Trustindex verifies that the original source of the review is Google. Competent, clear, respectful.
  
 
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   Pat Ryan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Guys we're great , Jose  let me know while doing routine maintenance that we had a system leak and got Nick out the same day with a quote . Replaced my AC unit and coil on furnace next day.  The Kern guys were all professional and explained the work  as the project was completed. Thank you for a stress free repair and replacement.
  
 
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   Vincent s 
 
 
 
 Trustindex verifies that the original source of the review is Google. pleased with Kern.  The crew showed up time.  They explained what they were going to do (I had 2 furnaces and 2 ACs replaced).  Installation went smooth.  I had a few minor issues post installation, but they were on it.  This was much much better than when I had my hot water heaters replaced (different company - NOT Kern)
  
 
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   AmyLynne McBee 
 
 
 
 Trustindex verifies that the original source of the review is Google. Everyone I encountered from first phone call to installation were just phenomenal. Carly at the office got me in for next day appointment after our AC went out on the hottest day of course. Marissa came out first thing the next morning and was very professional, knowledgeable, personable, just all around awesome really. She got us in for install next day which was truly a blessing, and Sergio and his coworker that did the install to replace the 30year old furnace and AC worked their tails off today to get it all finished. I can’t thank them enough for all the accommodations and awesome work. Makes the cost hurt slightly less ????.
  
 
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   PatriciaB 
 
 
 
 Trustindex verifies that the original source of the review is Google. Service was perfect as always.  Technition was prompt and well mannered.  He worked on the AC and the furnace and was careful and did a good job.
  
 
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   TL Nab 
 
 
 
 Trustindex verifies that the original source of the review is Google. The worker performed excellently. While completing the tasks, he kept my son informed about the upcoming steps. I am very satisfied with Kern Heating. Additionally, they provided me with a substantial discount and ensured my satisfaction. If you require furnace or air conditioning services, I recommend contacting Kern Heating.