HVAC reviews in Littleton, Colorado

This company is fantastic. Nixon (previous visit) and Bronson (today's visit) are great guys, super knowledgeable, and left me feeling like I was in good hands. Definitely recommending to everyone

Edit: Had to change my review as my AC still has not been fixed and remains inoperable in this continually rising heat.

Excellent experience with this company. Service call was made and Jimmy the Owner came out the same day. He was very professional and thorough while diagnosing the issue. Next day a full team came out and installed a new furnace (model being replaced was almost 30 years old). They got the new furnace installed and then programmed the new thermostat. Jimmy, Jim, Nixon and Zach are a true professional outfit. So happy to have found them. Thanks guys!

Jimmie came out and helped us figure out why our fan was constantly running. Within just a few minutes he was able to get it fixed! The appointment process was super easy and convenient to complete, and the company as a whole is very reliable to get in contact with

Update: we called JC mechanical back out as we were having performance issues. They sent out their lead tech and they made right everything we had a concern with. Service and pricing was great. I appreciate we could have a tough conversation and we arrived at an equitable solution for all of us. The techs that we had such a negative experience with in both information and service no longer works for the company.

Old review: We used JC to install our new furnace. Very reasonable pricing. The same tech that installed the furnace has been out to our house for 1-2 follow up services. I would be giving JC 5 stars if that same tech had come out yesterday. A new tech was sent to our house yesterday. His sales tactics were slimy. We directly asked him how much the smart meter would cost and he continued to say it was free. Finally he produced the monthly membership plan that we have to buy for that "free" meter. When my wife declined the plan, he suddenly became very uncomunicative. My wife followed up several more times during the visit asking the status of our AC. All he said was it was old. When we get the after action summary notes, he wrote that the freon was low and we refused to take action.
He never informed us the freon was low. He kept pushing the membership plan and when we wouldn't buy, he then just wrote up we refused all services.. I now have to call out a seperate company to charge the AC... which we would have gladly done with JC, if the tech had actually said something.

We will be taking our business elsewhere after this interaction.

Jimmy helped me get my boiler back to operational through a series of repairs. I've used multiple boiler technicians at other companies in the past, Jimmy's expertise and professionalism is unmatched.
Great price, amazing service

Jimmie and the guys at JC Mechanical were awesome to work with!!! They installed a mini split with three zones in the upstairs of our home and we couldn’t be happier with the results! We called out multiple companies for bids and opinions on how to resolve the issue and Jimmie was heads and shoulders above everyone else with his price and his knowledge of the process and options for fixing the problem. His explanations to us that were easily able to be understood even though we know nothing about HVAC! He went above and beyond in answering all of our questions and making sure we were comfortable with the process before work began. We have a dog who is crazy when it comes to strangers, so we let him and his team complete the work while we were out of town so there would be no issues with the doggy - and I couldn’t have been happier. The work was completed early, our home was left in good shape, and they followed up with us with pictures of the completed project while we were still out of town. We are happy customers and will be sure to call on Jimmie and his team for all our HVAC needs in the future!

We had a 22 year old furnace and AC that JC Mechanical replaced. I got 3 estimates, and for similar equipment, theirs was the best price, and they even threw in a couple of repairs and parts for free as part of the work. They finished most of the work in one day, wrapping up the next day. The old system was not installed properly, so the retrofit to the new system took a bit longer than expected. Jim Jr, Mike, and Jim Sr were very professional in their work, making sure they got the installation just right. I would highly recommend this family-owned business.

UPDATE March 2023 - They came back for a free maintenance check-up in April for the cooling season and everything is working fine. And we also had them install a new smart thermostat that gives us more control over our system.

UPDATE - I needed a new gas shutoff valve installed. Technician came out and was able to get the old valve closed and, when we have to move the stove back in, will come back to install a new properly-working shutoff. He didn't charge double trip charges since we were already customers.

UPDATE Nov 2024 - Thought I might have a gas or CO leak. I shut it down and they came out the next day to inspect. There were no problems and they got me up and running again at minimal cost.

I am very pleased with the customer service from the front office to the technician. They were able to come out same day for me and get a new thermostat installed. The only reason I gave 4 starts vs 5 was because I was told there would be a part that had to be installed in the furnace that was quoted but at the end that part was no longer needed but I was charged the same amount. Tech said that the service was a flat rate which was not discussed up front. I would have expected a discount after initial quote if Service AND parts were not required to be used. Great and easy company to work with other than that.

Jimmie and his team go above and beyond to make sure you have the right system to meet your needs and expectations. Very hard working, respectful, knowledgeable and dedicated experts. Fair, competitive pricing. Always answer their phones or returns messages immediately. And, they will be monitoring my new top-of-the line, 99% efficient, Lennox systems performance (2 of them), remotely to make sure it continues to operate seamlessly. It's hard to find a company these days where you can honestly leave a 5-Star review. Keep it up JC Mechanical!

I am not sure how JC Mechanical is with HVAC installs, but for electrical panels.... they truly struggled. Contacted in August 2024. Job completed April 2025. I heard nothing once I signed the contact. Had to call and found out they were waiting on permits. September 2024 was the first time someone arrived for the install. Excel wasn't set up properly to shut off power. So they postponed until October. (again lack of communication) I will say that they tried and did make sure we weren't without essential power for more then 14 hours. Between September 2024 and April 2025 JC Mechanical came to work on the electrical panel several times. (more then 10) With several days of the power being shut off for a few hours. Several occasions we were told the electrician would show up and he would arrive hours later or never arrive. Towards the end of the project my husband and I had a running joke on if they would even show up each day it was so frequent. My husband and I had to drive the job moving forward. JC Mechanical took little to no initiative to complete this job without our prompting. They did not understand current requirements. I had an inspector out for another project and asked about something on the electrical panel that JC Mechanical was struggling to get working to be told it wasn't necessary. I then informed JC Mechanical and the job progressed. JC Mechanical had difficulty with the siding on the home. So much that JC Mechanical had us ask the contactor who was working on the communities hail damage to help fix it. Thankfully, the hail damage contactor was able to fix the siding at no additional cost. JC Mechanical did say if we were charged, they would cover it. If scheduling and the amount of man hours used for an electrical panel box swap (no upgrades or moving the box) wasn't enough of a headache, the finance team was told the job was completed the day BEFORE they arrived to start working on the project back in September 2024. I had to take weekly calls from the financing company to again and again explain that the work was not yet completed. Getting our electrical panel box swapped from JC Mechanical was not a pleasant experience. I would NOT recommend them for swapping an electrical panel.

This was the most prompt service I’ve received from a repair company! The pricing for a weekend call was very reasonable. Seth arrived on time and did an amazing job diagnosing our issue. He walked us through the process and left room for questions and feedback. We were very comfortable with his recommendations and look forward to continuing our work with JC Mechanical Heating & Air.

JC and team were professional, courteous, and knowledgeable. Very satisfied, would highly recommend!

Had to edit my previous review after feeling like I had been scammed.

Had Jimmy, the owner, come out to my house to see why my AC wasn’t working anymore after I spent over $1,100.00 on a new capacitor, capacitor saver, and cleaning the whole system less than a year ago. At first, he was very responsive and came right out. He told me the capacitor saver part had failed prematurely and it should still be under warranty from the company. He said he will check with them and get back to me. Because of how impressed I was with his professionalism, he got me to spend another $160 on their VIP membership.

I had waited 3 weeks and didn’t hear anything from Jimmy or his company so I emailed Jimmy directly to where he was at with getting me the replacement part and he said he had been too busy and it completely slipped his mind and will call first thing the next morning. I replied, no worries. Please let me know when you can. I waited another 11 days and still didn’t hear anything. I emailed Jimmy again for an update, but I didn’t hear back from him this time. I gave it another 2 weeks and called his office to see what is going on. They put me on hold for a minute and when they returned, they apologized and told me Jimmy has been very busy. I made sure they knew it had over a month since Jimmy said he will contact the company where he got the capacitor saver part from and they apologized again. I asked them how much longer I should wait this time before I call them for another update and they said maybe 2 weeks. 3 months later after my phone call to the office, I still have not heard from them and my AC issue is still not resolved. I’ve given up at this point. So I just want to make sure people are wary of how this company operates and the “special VIP membership” they will try to sell you and then completely ignore you.

JC Mechanical and their techs, especially Jim have been great. I’ve been a customer for years. They have always responded super fast, even during emergencies in the worst weather. Last week I called in with a non working furnance, they managed to come in within the day and fix the issue. They are very reliable and fast and have great work integrity. I wouldn’t change them for any other HVAC company. They are the best.

This guy Jim stood til 1030 at night working on my MR. Cool system. Did what another company tried multiple times. Got my system going right before snow. I’d recommend JC Mechanical.

Jimmy is wonderful , always great to have him come to help us with our HVAC system !

Jimmie (the owner) is great. We got a new steam humidifier. Helpful initial consult where he gave us multiple options at different price points, explained the pros and cons of each, and wasn’t at all pushy towards higher priced options. After tech installed the next day, he swung by to make sure it was working well. While he was over he pointed out some maintenance stuff we should be doing that was easy DIY stuff instead (not another sale).

Repeated No-Shows, Price Gouging, and Dodging Accountability – Avoid at All Costs

I had a highly disappointing and frustrating experience with JC Mechanical Heating & Air Conditioning LLC in Colorado, and I want to help others avoid a similar situation.

I hired JC Mechanical to replace about 2 feet of damaged dryer duct in my home. They quoted $3,283, claiming it would require disassembling and reassembling a large section of my HVAC system in the utility room, with at least 8 hours of labor and expensive parts.

What actually happened:
The technician cut a 12” x 12” hole in the moisture resistant drywall ceiling of a bathroom (not even in the same room as the HVAC system), installed a short piece of $15 flexible dryer duct, and finished the job in under an hour — including the time it took to leave and buy the duct work.

The HVAC system was never touched, and the bathroom ceiling was left open and unrepaired.

Yet, they charged me the full $3,283 as if they had done the complex work originally quoted.

That alone would be bad enough. But the experience was even worse:
• They were a complete no-show to their first scheduled appointment. I stayed home all day, called and messaged their office repeatedly — no response.
• That evening, they finally called back, apologized, and rescheduled.
• At the rescheduled appointment, they were several hours late — again with no notice and no response to my calls.
• After the overcharge, I called their office multiple times.

I was repeatedly told the owner would call me back — he never did.
• Eventually, they blocked my phone number.
• When I called from my wife’s phone, they answered, again promised a call back, then blocked her number too.

In my opinion, JC Mechanical:
• Grossly misrepresented the scope of work to justify an inflated price,
• Performed a simple, low-cost repair, and
• Then avoided all responsibility once payment was received.

This wasn’t just poor service — it was unethical and deceptive.
I strongly recommend avoiding this company. If you do consider hiring them, get everything in writing up front, including a detailed scope of work and itemized cost breakdown. Make sure the work quoted matches what’s actually done. And do not make final payment until you're fully satisfied — because once they’re paid, you may never hear from them again.

Jimmie was amazing, on-time, thorough, polite and conscientious. Definitely recommend and ask for Jimmie!

I would recommend to find another contractor.
For starters, they don't communicate at all. My wife and I have both reached out multiple times to JC Mechanical and we never receive updates or a schedule until a day or two before they are scheduled. And then they cancel 80% of the dates they scheduled and don't even notify us until well after ther were supposed to be here, meaning that my wife or I took a day off of work to meet a contractor who doesn't show up.

We've had a contract signed with JC Mechanical since August, work is still not done. They have made 10 visits to our home between September and February and still can't complete the work. The very first visit, JC Mechanical came to our house, sat I'm there truck for 6 hours and then told my wife that they couldn't start work. Within an hour they called us asking for payment saying the work was completed.

JC Mechanical tore apart our siding, we got replacement siding for JC Mechanical, we are currently waiting on them to fix the siding and was told they are waiting for siding to come in, we sent them photos of all the siding we have for them here to use, no response.

JC Mechanical, told us that we needed Arc Fault breakers. They installed these "special" breakers and they kept tripping. Spent several days troubleshooting this issue. I called the building department and was told that arc Fault breakers were not required. When we informed JC Mechanical this, they canceled the next visit and left us wondering when they were returning to finish. When they did return...they still didn't finish.

I've been dealing with this contractor for going on 6 months, for a "simple" job. Yes that is half a year and work is still incomplete. Not only that, but JC Mechanical has left razor blades in our yard, nails and screws in our laundry, open tool bags, a ladder, open box knives and trash all over the place.

The only reason they get 1 star is because 0 stars is bot an option.

This father and son team arrived on time and were ready to work upon arrival. They were very responsive to my emails and didn't try to sell me something I didn't need. They are personable and friendly and will gladly answer any questions you may have. I would highly recommend them to my family and friends. Thank you, JC Mechanical!!