Get matched with top furnace / forced air heating system install or replace pros in Lake Forest, IL

"They made 3 service visits before recommending a new one. I was already peeved by the multiple service visits that we paid for but their price point was decent for the furnace installation. They were all nice enough and it was nice that they thought they could fix the furnace instead of us having to buy a new one, but over $300 later and it still didn't work.  I will only use them again to keep the warranty on the furnace.
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"The experience was great. I was referred by a friend. I called and set an appointment. The technician was prompt, and very professional. He checked the furnace and described the problem. A major component had failed. He said I had a choice of either repairing the furnace, or replacement. The repair was not something I was interested in, so I chose to replace it. The replacement was done in a timely, and professional manner. I highly recommend All Temp for their professionalism, and making my furnace replacement a very positive experience."

"Outstanding service from beginning to end. The team arrived right on schedule, worked efficiently, and left everything spotless. Our heating system runs better, and the air feels much cleaner."

"Cahill installed my new furnaces in a professional manner and the units work very well. The annual service is thorough and complete. I am confident that the units are well maintained and not just given a cursory service. Installation of the ducts was done quickly and professionally and their advice helped me make the right decisions. They showed up to perform the work at the agreed time and completed the work efficiently. I didn't have to allocate a block of hours during which they might show up -- as with most service companies. I'm very pleased with this company."

"We had a huge heat problem and Four Seasons came in and fixed it for us. They were courteous and on time. The first person came and looked at it for us and told us the issue and they were able to install the furnace the same day. I would highly recommend them for your furnace needs!"

"I hired them to install new combined water heater/ boiler, install new water filtration system and service the ac units.Great service and knowledgeable of what theyâ re doing. Definitely will hire them again."

"From the moment I picked up the phone and talked to Nora and Tracy to discuss their services, through Caesar and Manny leaving our home after giving our ducts and vents a much needed cleaning, Mr. Duct was an absolute to work with!  After having our wood floors refinished, it was important to have our vents thoroughly cleaned from the saw dust.  Not to mention, the HVAC system is 12 years old and could've used a cleaning anyway.  Everyone I spoke to or met with in person were polite, courteous, punctual and professional!  They came to me highly recommended and left with their reputation unblemished.
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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.

"Savage Heating repaired our 17 year old rooftop commercial HVAC unit. Professional, Knowledgeable and honest. Highly recommend for residential or commercial."

"Rick was very helpful with selecting my new central air and furnace system. I am still thrilled with the result."