24/7 Emergency Service 847-305-2800

Lea Heating & Air Conditioning is a family-operated heating and air conditioning company. Established in 1979, our business has provided the McHenry, Kane, and Northwest Cook Counties, along with the Fox Valley area, with high-quality HVAC service and equipment for over 40 years and counting.

847-305-2800
We’re Your Local Bryant Factory Authorized Dealer

We are a Bryant National Award Winner, recognizing our commitment to customer satisfaction and excellence. We are
also a Bryant Factory Authorized Dealer, which is the highest recognition among the Bryant brand. We are proud to offer high-quality heating and air conditioning installation with HVAC products from Bryant. We also repair and
service all makes and models of equipment.

We have an in-house sheet metal shop, fully stocked parts department, and fully stocked service trucks. We ensure quality, timely service, and installation for each and every customer. Lea Heating & Air Conditioning offers 24-hour emergency AC repair and heating repair service 7 days a week. Our HVAC technicians and installers are highly experienced, factory-trained, NATE certified, and provide the best quality service and installation in the heating and cooling industry. Whether we service or install new equipment for your home, our prices are the most competitive in the marketplace. You can always expect quality workmanship and 100% customer satisfaction with Lea Heating & Air Conditioning.

Areas We Serve

Based in East Dundee, our heating and AC company serves customers throughout McHenry, Kane, and northwest Cook counties, along with the Fox Valley area. Communities we service include:

  • East Dundee
  • West Dundee
  • Sleepy Hollow
  • Elgin
  • Crystal Lake
  • Algonquin
  • Carpentersville
  • Huntley
  • Lake in the Hills
  • Fox River Grove
  • St. Charles
  • Hoffman Estates
  • Woodstock
  • Bull Valley
  • Geneva
  • Palatine
  • Schaumburg
  • Bartlett
  • Marengo
  • Hampshire
  • Richmond
  • And more!
Save On Your Next HVAC Service Appointment

We offer the most up-to-date rebates and discounts on new heating and cooling equipment, which include utility rebates, manufacturer rebates, sheet metal rebates, senior citizens discounts, and military discounts. Please reach out to us for more information.

Professional Heating & Air Conditioning Service – In-Store or On-Site

We invite you to stop by and visit our fully equipped showroom in East Dundee with working models on display. Please make an appointment to ensure that one of our qualified staff members will be available to answer any of your questions. Call us today at 847-305-2800 or fill out the convenient online form and we’ll get back to you shortly.

Heating & Cooling, AC Replacement & Furnace Repair Carpentersville, IL, Elgin, IL & Algonquin, IL

Heating & Cooling & AC Replacement in Sleepy Hollow, IL

AC RepairFurnace RepairHeating & Cooling

Have a question?

We are here to help.

Give us a call, or fill out the form below and we will get back to you as soon as possible!

847-305-2800

What others say


From the estimate to the install, everything was excellent. With being a retiree from the trade world, the work was clean, started on time, finished on time, very impressed! Would highly recommend!!!

Rick Adkins

I highly recommend Lea Heating and Air. They are very fair priced and knowledgeable about what needs to be done. Josh and Andy installed my central air yesterday. I’m very happy with their work. Both were friendly and very efficient. They took the time to answer any questions that I had and cleaned up beautifully. Thank you again for a job well done!!

Kristi Weseman

We have used LEA HEATING and cooling for 8 years,top notch company, they are on time, attention to detail and work is perfect. Clean up is best in class. Todays LEA rep was Duane, and he is a true professional. Great company.

Jon Trent

We had a new AC & Furnace installed one month ago; everything is working perfectly from day one. Mike came out initially and gave us a few options that would work with our home, was very helpful and answered all of my questions. Andy and Jordan installed our new AC & Furnace in a single day, amazing job considering we have a very cramped utility closet. Very pleased all around, I highly recommend!

Kyle Stewart

I had an issue with an update on my thermostat. I contacted one local company and they had sent two guys out that had no idea what the issue was. I then contacted Lea Heating & Air Conditioning. I had the opportunity to talk with Robert and he went “way out of his way” to help me out. Outstanding customer service! He is very knowledgeable in his work, was pleasant to work with, and was reliable. Outstanding companies like this are hard to find. I will always call them first for any work that needs to be completed. I highly recommend them!

Brandon L.

I used Lea Heating for a normal maintenance service check up in my new townhouse. They were able to accommodate an early morning appointment and kept within the time frame quoted. Duane answered my questions politely and gave me good information for future heating/cooling situations. I would use this company again.

Nancy Roozee

Mike Lea was wonderful giving me a quote, explaining the price, discounts, the process etc. The crew was friendly, worked like a well oiled machine and explained what they to doing. I purchased a furnace, A/C, humidifier & thermostat. Everything was cleaned up when they were done and I couldn’t even tell they had been at my home. Fast, efficient and good price! I highly recommend Lea Heating & Air Conditioning.

Patti Flessner

We have used Lea Heating services for 20 years. They repaired and maintained HVAC in our large family home in this area and replaced the furnace and air conditioner when required. Now that we downsized to our “retirement” home, we knew immediately they were the ones to call for this place too. They have always been responsive, professional and pleasant too. They provide information and answer questions, do not pressure sell and provide quality equipment. Yesterday they installed a new furnace and air conditioner in a timely manner, were considerate, clean and helpful in their approach. One gentleman even carried in some groceries for me! They left the site in tip top condition with everything working. Highly recommend Lea Heating.

Mary Loete

I’m very pleased with Lea heating & Air, I had a quote done, very reasonable price, i called scheduled an appointment for whole HVAC system install, Ron & Joshua were professional very knowledgeable, never messy, after the job was complete they both explained everything to me, these two guys know what they’re doing. I would highly recommend Lea to everyone, they’re awesome!

Dorinda Fucarino

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Hoffman Estates, IL

Lake in the Hills, IL

Elgin, IL

Algonquin, IL

Carpentersville, IL

East Dundee, IL

Sleepy Hollow, IL

West Dundee, IL

Crystal Lake, IL

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