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    Services - Just In Time

    Air duct cleaning

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    Recommended Reviews - Just In Time

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    Large amounts of rust particles in initial furnace exhaust pipe.  Big hazard they cleared up.

    Just wanted to say how impressed I was with Donovan and Matt from Just In Time HVAC company. They came to my house to look at my water heater. Within a minute they diagnosed my problem, then they explained different options that would fit my needs and my budget. They made it very easy, and after they explained the ease of it, I went for a tankless water heater. They set up an appointment, relit my pilot light, and even noticed that I was having trouble with my furnace exhaust pipe, as it was nearly had no rise to it, which he explained could cause carbon monoxide issues. He brought new pipe when he came to do the main job, which I might add they fixed as part of the overall job for free! Donovan was always looking to make sure his new work and my existing work would be safe and efficient. He noticed my intake gas pipe was only hand tight, he fixed that. He was always working, spotting, and figuring out what was the best for each spot, while Matt used his youth and strength to effortlessly lift everything up and down from the truck to my basement and back. Overall an amazing job, with a price point over a thousand dollars less than other quotes. If you have a heating or air issue, I would highly recommend you call JustInTime first and have them out. Well worth the time, well worth your money. Charles Rhoades The photos below show what they found in my existing furnace exhaust pipes, which the replaced as well, thank you!

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    19 days ago

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    10 months ago

    I needed a bathroom sink worked on. Work was done on schedule and price was reasonable.

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    2 years ago

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    3 years ago

    Excellent professional quality work every time! Thank you Just In Time, for coming to my rescue helping tape up my little gas leak!

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    2 years ago

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    3 years ago

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    3 years ago

    Had my furnace and air conditioner inspected and Mike Abens did a fantastic job. He was very thorough.

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    5 years ago

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    12 years ago

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    8 years ago

    A repairman named Troy came to my house on Easter to fix my furnance. Troy was prompt & professional. Thanks for your excellent service!

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    Ask the Community - Just In Time

    Review Highlights - Just In Time

    They made it very easy, and after they explained the ease of it, I went for a tankless water heater.

    Mentioned in 2 reviews

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    Tri-County Heating & Air Conditioning Systems

    Tri-County Heating & Air Conditioning Systems

    (2 reviews)

    My moms furnace failed the week before thanksgiving and the service that came out to look at it…read moresaid they had no time to do it and I needed to call someone else. I called Jon from tri county heating and he was able to fit us in between appointments that same day to assess the situation. Despite being super busy and a challenge with finding a new furnace on short notice, he was able to get us up and running in two days. He could have sold us a larger furnace same as we had but he indicated that we didn't need such a big one and saved us some money. With my Mom being 85, It's reassuring to know that we have found someone we can trust and who will be responsive. He even lent us some personal space heaters for the days we were without heat. That's service. I can't thank him enough. Highly recommended.

    I am giving Tri-County Heating & Air five stars. My furnace quit working properly on one of the…read morecoldest days of January and Jon heard my concerns and promptly showed up. My furnace was letting off toxic fumes and he stayed with me until he was certain all the air was non-toxic and I was safe. He then proceeded to make sure I had a brand new furnace the following morning and was prompt and on-time. Not only is he knowledgeable, but he went through everything with me so there were no questions. Him and his co-worker were clean, orderly, knowledgeable and helped put me at ease. I am a sales professional and I know bull when I see it. These guys are on the mark and I would refer them to friends and family. I will definitely call them again for any work related to my heating and air. I owe Jon a lot for helping me out of a bad situation.

    Harmonic Heating & Air Conditioning Naperville - Breathe Easy...Stay Comfortable with Harmonic Heating & Air Conditioning.

    Harmonic Heating & Air Conditioning Naperville

    (88 reviews)

    Stay away from this business! My entire cooling and heating system was left in an inoperable state…read more I called for a diagnostic of the air conditioner today because cool air isn't coming from the vents. I was told the diagnostic would cost $149. I asked to be informed of any repairs that had to be done. Technician checked the system and recommended replacing unit. We discussed replacement unit and cost. I was ready to pay deposit. In the next 10 minutes I was told that the model I selected is old and not available. New model costs $1000 more. I asked for a proposal to decide later. Technician told me that the visit costs $396. He said that he fixed air conditioner that was not working. He never told me that he is fixing anything. Through our the visit it looked like he was figuring out the problem. I talked to the owner and we agreed that any repairs that were done will be undone so that I do not have to pay for repairs. Then the technician removed all the wires from the board making both heat and fan unusable. He did not just undo the "repairs", but made entire system unusable including fan and heat which were working before his visit. See the photos to show what was done!

    Reply to 2 reactions from Harmonic on my 1 star review…read more 1. A. & K. claimed A. fixed my heater Tuesday; lie. Bad customer service. Harmonic deserves 1 star, but all the starts below 5 are NOT indicated on the Google graphic of the numbers of review stars 1-4: false. 2. I never promised a review pull-down for a discount. My husband & I have better things to do than having an "agenda" as Harmonic accused. My husband was on a business trip. 3. I never called for an emergency repair. I did not switch from repair to cleaning & maintenance. I asked A. if C & M was possible afterward, unaware of 2 more with no heat. Harmonic called me "selfish" for this. 4. Any possibility A. and K. have unconscious biases towards people like me? They accused us of "manipulating" what? To save a few hundred bucks, while we spent in the tens of thousands at Harmonic's better former (aquired) company) you imagined up? 5. How could Harmonic accuse me of lying about my pain. Because I was able to and had to carry my 10 lb dog for a short moment because of her barkin? Why do I even have to explain my chronic severe back pain and mostly failed back surgeries and weak immune system? 6. I had no "agenda," but getting my heate fixed. I am not playing any "game" as accused. I am standing up for myself. 7. K.'s statistics on the number of my Goole reviews are false. 8. A. & K. are the ones who were "aggressive, harsh, unethical, disrespectful, and manipulative." Stop projecting and gaslighting. I wish I would remember to record conversations when I am alone with a person like A. Why did K pull down his absurd replies on Google?

    Just In Time - hvac - Updated May 2026

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