I purchased an HVAC system from Green Street HVAC nearly three years ago for about $18,000--paying…read morealmost $10,000 more than an alternate (unlicensed) quote--only because I was assured parts and labor would be covered and the company would stand behind the install. During a cold front, I requested service (Ref: Estimate #20631848) and asked for basic documentation (contract copy, warranty registration, and a fully itemized estimate with OEM part numbers/MSRP and labor breakdown). The estimate came back over $3,000, with ~$1,700 just for the part, and included a line labeled "Band-Aid." After consulting Service, Inc. (Nashville) and Hiller, I learned "Band-Aid" can function as open-ended billing--i.e., "whatever it takes" after the part is installed, with no clear cap. To verify, I had Service, Inc. review the job. They confirmed in writing that:    *   The part is fully covered under the manufacturer's warranty ($0 to me), and    *   The install is about a 1-hour job, with a labor quote less than half of Green Street's total. In plain terms:    *   I paid a premium (~$18k), nearly $10k more than another bid, for peace of mind (parts + labor assurances).    *   Before a storm, I asked for help and transparency.    *   Green Street quoted $3,000+, including $1,700 for a warranty part that should be $0.    *   Their estimate used "Band-Aid," flagged by two licensed contractors as open-ended/uncapped language.    *   Service, Inc. honored the warranty ($0 part) and quoted a clear, fair price for ~1 hour of work. I support local businesses that do right by their customers--especially when families are relying on heat in bad weather. My experience with Green Street HVAC was unresponsive, non-transparent, and inconsistent with what was promised. If you're considering them, insist--in writing--on:    *   Proof of manufacturer warranty registration (model/serial + confirmation),    *   Written parts coverage terms (what's $0 under warranty), and    *   A fully itemized estimate (OEM part numbers, MSRP/list, exact labor hours & rate; avoid vague "Band-Aid" codes). Date of service request: 10/25 Estimate: #20631848 TL;DR: Green Street quoted $3,000+, including $1,700 for a warranty part and an open-ended "Band-Aid" line. Service, Inc. (Nashville) confirmed the part is $0 under warranty and the job is ~1 hour, at less than half of Green Street's total.

Again, one of my top three bids. Ended up going with another company for price but these guys were…read morevery thirough and orofessional.

After trying other hvac installers and cleaners, we have settled on sticking with a company we can…read moretrust. They provide thorough explanation and excellent detailed service. Highly recommended.

On time, efficient, knowledgable, everything you want in HVAC service and repair! I would…read moredefinitely call them again!

I don't even know where to start. My HVAC is only 3 years old and hasn't given us any problem. I…read morecalled Solace to schedule a tune-up. Nothing fancy; just clean and check the unit for the summer. That's when they came to my house and told me that my unit had over five problems, including leaking refrigerant, bad capacitors, electrical work, etc. Funny enough, their first quote was for 8k, which was to "fix these terrible problems." However, they gave me another crazier solution, to get a brand new unit, which was only 2 tons for a small house for 11k. Kid, you not. I went and got a second opinion, and as I suspected, my HVAC connections weren't the prettiest, but had no problems. The other HVAC professional also found out that they only cleaned a portion of the unit, so he installed a new disconnect, re-did my drain line, sealed my flashing, and rewashed my unit for $600 bucks. Do it at your own risk. I have never seen something like this, not even when I used to live in NY they tried to upcharge me like that.

Solace came to look at a problem: a vent was in the wrong place. They quoted a fair price, came…read moreback when they said they would and did an excellent job. Highly recommend!

I was told by a previous A/c I needed a new coil unit. After calling around, I booked Heritage due…read moreto great reviews and giving me a better price over the phone. Yesterday, the Heritage techs arrived to do the job. They did a quick system check and noticed freon was not low and like it should be if there was a true leak and I was told did not need to spend $3000.00 on a new coil unit !!! After further discussions, we identified that this Airbnb was having the coil freeze due to renters lowering the temperature to 50°. After a quick adjustment to all thermostats and only pay $128 I am so thankful for honest companies!! Highly recommend Heritage and this will be my go to company from now on!!!!

Set up an appointment for 9am this morning. At 9:02 I reached out to let them know that I will put…read moremy dogs away when they arrive if they text me when they get here. Was told at that time that they were not able to make the appointment time they were already late for.

Of course our air conditioner decided it didn't want to do its job when the heat index is over…read more110°! So what's a girl to do? She starts looking for companies online that have good reviews. Bingo! Found it! The name of his company says it all! Honest? Yes. Explained things to me in a way I could understand since I have no knowledge about HVAC units. Told me options and explained his thought process behind it. My HVAC needed Freon. And it got what it needed. And now it is no longer in the 90° range inside the house. Another big perk is that he is a local from Mount Juliet. I really do like to support local businesses and this is one that I would use again if I needed. 17/10 recommend!

We were having an issue with the AC in our house where the unit would try to power on, then turn…read moreoff immediately. Dave was one of the first people to respond to my request, and came out to investigate what the issue was. I appreciated that Dave talked me through what he was doing and how the AC unit & thermostat worked so I understood some basics of why things were not functioning correctly. It turned out there was a larger issue with the unit, and Dave was able to procure the parts and fix the unit in a timely manner. He also helped us install new thermostats and everything is running smoothly now! Dave is efficient with the work and an excellent communicator. We highly recommend his HVAC services!

Andersons installed a new H & A system 2 years ago, when we bought a house that the air went out…read morewithin the first 3 months, excellent job, Now the basement flooded and they were there the next day, got it running again. We could not have asked for better service and value

I bought a house in Springfield Tennessee and immediately the problems started with the…read moreheat/air.For two years it would randomly cut out after two hours.Last month I paid 1400 dollars to the fourth company that said they guaranteed their work for 18 months.The day after they left I woke up and it was 51 degrees in my house.I called that company back and they said it was a propane problem.I got the propane company out and they said it was something wrong with my unit.They recommended Shane Anderson.I lost it at this point and called him and was not nice at all.I am surprised he even came to my house.I told him if you are just going to take my money and leave don't bother to come.I think I was yelling at this point.He came.He said he would stay until it went out so he would know what was wrong.He hung out for over two hours.He was calm,I wasnt.Then it went out.He fixed it.It was a grand total of 153.00.For the first time in two years my home is livable. I wish I had found him first.I will never use any other company.

Quick in and out, turn around, and professional. I don't need to say more so here is words.read more

Ryan and Ari went above and beyond for us (even over the holiday weekend) to figure out a…read morecomplicated hvac issue. They came up same day every time we had a problem. Traci, their client engagement specialist, was also so helpful, nice, and reassuring. Appreciate y'all!!

I cannot say enough good things about Mainstream Heating & Cooling in Clarksville, TN. Our recent…read moreexperience with them was nothing short of exceptional, and I felt compelled to share it! While house sitting for my brother, we faced an HVAC emergency on Thursday, July 30, 2026. The upstairs unit had failed, and the temperature inside was climbing to an uncomfortable 87 degrees. We were feeling quite anxious, especially after another HVAC company from Nashville had recently serviced the unit and given it a clean bill of health. Frustrated and in need of urgent help, we contacted Mainstream Heating & Cooling. From the very first conversation, we were met with patience and compassion. Christine, who answered our call, was incredibly gracious and understanding of our situation. She quickly dispatched Colton, who arrived at our home in just 20 minutes. Talk about rapid response! Colton dove right into diagnosing the issue and worked diligently for almost four hours. He discovered that the problem stemmed from a failed Nest device that had been incorrectly installed. Colton promptly installed a Honeywell T6 thermostat and completed the necessary re-wiring. Although he couldn't finalize the repairs that night due to needing additional fuses, he assured us that everything would be taken care of. True to his word, Christine called bright and early the next morning to schedule the follow-up repairs, which brought us immense relief. On Friday, July 31, Wes arrived to complete the job, and he was just as thorough and professional as Colton. He not only fixed the HVAC system, but he also pointed out several issues that the previous company had overlooked. It was clear that Wes is knowledgeable and takes great pride in his work. We are so grateful for the exceptional service provided by Christine, Colton, and Wes. They truly went the extra mile to ensure not only our HVAC system was working correctly but also that our comfort and safety were prioritized. Mainstream Heating & Cooling is a true blessing in our community! We can't wait for them to care for our new home soon, and we wish them nothing but continued success in the future. If you're looking for a reliable, professional, and caring HVAC team, look no further than Mainstream Heating & Cooling!

Great service and response! They came in to install a new unit for the upstairs. Not only were…read morethese guys professional, they were respectful and gave helpful tips on best practice maintenance! I was impressed with their lead guy Larry and the way he ran his small crew. They cleaned up after themselves and made sure we knew what to expect every step of the way. Just yesterday, their work was final inspected and passed with no issues. I'd recommend Mainstream to anyone who needs HVAC work done!! And ask for Larry! He is the bomb!