Get matched with top window a/c unit service or relocation pros in Thornton, IL

"Excellent! Serviced furnace and changed humidifier pad . Also cleaned hot water unit ."

"Best customer service ever! Very helpful! Was able to fix air conditioner right away. I will go here for all my future maintenance or repair issues!"

At LSI repair we offer only the best and fair prices. We also specialize in heat treating furnaces but we cover a large array of services from residential to commercial from small to big.

We provide a full range of HVAC services, including installation, repair, maintenance, and system replacements. Our experienced technicians ensure reliable and efficient heating, ventilation, and air conditioning solutions for residential and commercial properties.

"The installation was done when promised and completed on time at an excellent price. I needed to call the installers out to take care of 3 issues that I found when checking the installation. This was done in a timely manner. Overall I am pleased with the new system although I have not had an opportunity to really test the A/C yet as the weather turn cool and it has not been needed."

"What I thought was going to be a relatively routine repair, turned out to require a total replacement of the furnace and a/c. Tom made a point to call my spouse who was at work to properly update him on the situation. He even offered to come by "after hours" in case my spouse wanted to talk to him in person. Offered honest and fair suggestions after thoroughly questioning our heat usages. Very flexible with their service hours, they were able to accommodate us on a Saturday. The men who installed the furnace and a/c were professional and personable, and always keep us informed. They also cleaned up after themselves. Very satisfied with their service."

"Service Provider was professional,expert in HVAC. Very courteous and cooperative. I purchased maintenance based on quality of service received.;"

"Went very well. TDH services my two furnaces and one humidifier every autumn to assure trouble-tree operations. Their technicians have always been thorough, knowledgeable, efficient, friendly and professional; an this year's visit, by technician Gelacio, was no exception. Together with TDH's fair price, this keeps me a satisfied customer."

"This is my third time using VACS, they do a great job. Called on Thursday afternoon, was able to get an appointment early Friday. Cleaned out vent from dryer to wall and from wall out to outside vent, as well as interior of lint trap in dryer. Very thorough and professional and reasonable price. Would highly recommend."

"This company ROCKS!!!  Great service, great job and reasonable prices.  Arrive on time and my carpets looked brand new.  I have use ADR a couple of times and would use them for any future jobs I have.
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