Get matched with top heating and air conditioning pros in Lockport, IL

"Porterhouse Heating and Cooling was very professional and knowledgeable on the service provided. I used them to install my air conditioner unit. Eventhough, the unit was not my issue, they still came out and was able to find the issue and fix it. They were friendly, professional, and reasonably priced. I will definitely use again for any of my HVAC concerns."

"The technician did a very good job cleaning the hvac ducts."

"Everyone from the sales person to installers were great. I love our new HVAC system!"

"I replaced both of my forced-air furnaces and a/c units due to age (25 years) and efficiency. I also replaced two humidifiers and upgraded to wi-fi thermostats. I contacted TR Miller and another American Standard contractor to receive bids. Tim (the owner) came out and did a thorough job of accessing our situation and walking through his proposal. I contacted both contractors over the next 7-10 days to better understand competing proposals as well as negotiate the overall price. While both parties were close on price, Tim's level of responsiveness and demonstrating that he wanted the business made the difference.
We scheduled an install date for Nov 8th. His crew of five installers showed up on schedule (8am) and worked diligently through the day. They were all very professional and always willing to explain what they were doing if I had questions. Amazingly, the job took just under the 8 hours they estimated. Ben, the manager, provided a detailed walk through of all the work, how to care for the units, as well as things to watch for. Another installer explained how the wi-fi thermostats worked (which are awesome and highly recommended by the way). There was quite the mess from ripping out my old units and some of the duct work, however the crew cleaned up everything. After they left, it was as if they were never there.
Overall, I could not be happier with the process. Despite rather mediocre reviews on Angie's List, I can't say enough good things about my experience with TR Miller.
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Precision Today is a trusted multi-trade contractor with a expert technicians specializing in HVAC services for residential properties. We deliver fast, safe, and reliable solutions—backed by same-day service.\n\nOur HVAC services include heating and cooling system installation, furnace and AC repair, seasonal maintenance, ductwork services, thermostat upgrades, and energy-efficient system replacements. Whether you need a quick repair or a full system upgrade, our technicians work with precision and attention to detail to keep your home or business comfortable year-round.\n\nWith locations in Carol Stream, West Chicago, Grayslake, Palatine, Franklin Park, and Naperville, we provide efficient coverage across the surrounding Chicago suburbs—allowing us to respond quickly and keep your project moving.\n\nIf you’re looking for a responsive, professional contractor who prioritizes safety, speed, and quality, Precision Today is ready to help—often the same day you call.

"United HVAC installed new furnace and new central Air and most recently new hot water heater. That being said I trust the company and their technicians they do the job right. Communication and outstanding service from everyone. Extremely happy. Thank you United HVAC."

"Jim really worked with my husband on figuring out the right option for our AC. Thanks Jim."

"He is very patient in fixing my furnace. There were multiple fix he did and now my furnace is working as I wanted it. Other HVAC contractors were unable to fix, but he was able to get the job done."

"AWE promptly responded to my work request and kept me informed about my appointment status. Peter came to perform the work. He was very thorough and even discovered that the HVAC contractor on our new home installed 2 furnaces: a current year model as well as a prior year model that was more prone to breakdowns. Provided great information and would definitely hire again. Thanks!"

"I talked to Nick who was good enough to send a technician out the very same day that I scheduled the service. The technician, Dan, was very prompt, thorough and friendly. He cleaned and sanitized 10+ vents, HVAC system, returns, supply lines, main line, and the dryer vent which was on the roof. A lot of Groupon deals that I looked around for have up-charges for the requirements that I had, particularly since I live in a 3rd floor walk-up in the city. With Lowe's the price that was quoted was the price that I got! I will definitely use their services again!"