24/7 Emergency Service 847-305-2800

Take the very best care of your boiler with expert service from Lea Heating & Air Conditioning in Northeast Illinois. Our NATE-certified professionals are proficient and experienced in boiler system installation, replacements, vital maintenance, and the most complex repairs of all makes and models. We offer free estimates, pioneer industry-leading innovation, and represent over 40 years of knowledge, dedication, and successful outcomes.


Trustworthy Boiler Repair, Maintenance & Installation

Lea Heating & Air Conditioning is your Bryant Factory Authorized Dealer. We determine the ideal boiler for your specific requirements and ensure exceptional reliability, efficiency, and longevity. Through industry-leading engineering, our line of hydronic heating systems provides a more gentle style of comfort. There are no unpleasant drafts, stratification, or introduction of air contaminants. Operation is quiet, clean and with minimal maintenance, these systems deliver lasting value. 

Trust in our team for your boiler system services!

From baseboard heaters and radiators to radiant flooring, zone control, and towel warmers, boilers offer versatility and unmatched rewards. Let the specialists from Lea Heating & Air Conditioning maximize your satisfaction with your investment. We are family-owned and operated, a National Award Winning Company, and focused on superior customer service. A call to 847-305-2800 is always answered with integrity, including 24/7 emergency assistance throughout Elgin, Crystal Lake, Carpentersville, Algonquin, West Dundee, Sleepy Hollow, East Dundee, Lake in the Hills, and Hoffman Estates, IL.  

Boiler Replacement, Boiler Maintenance, Boiler Installation, Boiler Services & Boiler Repair Algonquin, IL, Carpentersville, IL, Elgin, IL, Hoffman Estates, IL, Sleepy Hollow, IL & West Dundee, IL

Boilers in Algonquin, IL | Boiler Replacement Carpentersville, IL

Boiler SystemsBoilers ∴ West Dundee, IL ∴ Algonquin, IL ∴ Sleepy Hollow, IL

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What others say

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

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

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

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 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

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

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’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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