HVAC reviews in Carrollton, Texas

Lucas is very professional and thorough when he came out to check on our system and gave us a very detailed quote. Answered all of our questions. Great service.

Greentech was quick to repsond for my evening call and showed up the next morning. The field service engineer named Kendrix was very competent, troubleshooted the problem and got it fixed. I'm very satisifed with their professional service and recommend this vendor to my friends and neighbors. Thanks Lucas and his team.

Always a pleasure to reach out. Whenever I’ve needed anything, Greentech has been there to make sure it’s taken care of in a timely manner.

I want to be very clear that the business side of things here seemed solid. Communication was great, and the gentlemen that came to the house to asses what needed fixed, and also conducted the maintenance was professional and very respectful. The only reason 3 starts was selected was because the problem was not fixed. We still have the primary bedroom in our home very very hot. The problem was not fixed unfortunately.

I have been using Greentech for years on service repairs and they always do an amazing job. Prompt, reliable and reasonably priced.

Recently, I had to replace my HVAC unit and they did a phenomenal job. Kai was so thorough and knowledgeable recommending the right system to fit our upstairs layout. The install went perfectly. I highly recommend Greentech!!

Greentech Engineering Heating & Air Conditioning responded very quickly when our AC stopped working. They diagnosed and fixed the issue efficiently, and I really appreciated that they didn’t try to upsell anything unnecessary. Honest, professional, and easy to work with. Highly recommend!

I’ve been using Greentech for tune-ups since last year, and they’ve consistently been excellent. Kendrix serviced my heating system today and was very professional, taking the time to answer all of my questions. Great company!

The technician was not only extremely professional but also efficient and took the time to walk me through the process. Highly recommend this company and their team!

Our upstairs a/c unit quit working in July. We contacted our landlord, and they called Greentech who claimed they fixed it despite the fact that the upstairs temp never got below 78. I contacted the landlord again. This time Greentech replaced our thermostat. Nothing changed…temps still in the 80s. We contacted landlord again, and they informed us that Greentech stated the unit was fine. They claimed our thermostat was in a poor location which is why upstairs was not cooling. We’ve been in this home for 6 years…our thermostat is in the same location…and our a/c has worked fine until this Summer. Greentech says everything is working fine and our landlord agrees. The picture on the left was taken at night in the last week of October. Does it look like everything is working fine? The other two are readings were this Summer just after Greentech left and reported to our landlord that the a/c was working.

Just want to thank this company today for coming out fixing my AC Unit. It went out yesterday put in a request yesterday, out the next day and fixed! Truly appreciate the quick response and the quick time the maintenance man did while here. AC unit back up and running right before summer hit soon enough!

My air conditioner's outdoor unit suddenly started making a loud noise, and it lasted all day. After contacting GreenTech, they arranged a visit within a few hours. Before the visit, I provided the repairman's name, contact number, and specific time of day. The repairman was very experienced and quickly identified and resolved the issue within minutes. GreenTech was very interactive throughout the entire process, providing tips, precautions, progress updates, and follow-up contact information. This was very thoughtful. I highly recommend their professionalism and attentive service!

I'm a renter, i have very little control over how fast my landlord gives approvals for repairs. With that said, Kendrix has been out to the house several times. He arrives when he says he'll be here, he does a great job and he's pleasant to talk to. He has done a great job working within the restrictions he's had!

Our home heating system broke down during the late-January Dallas ice storm, and the indoor temperature dropped to 51°F. GreenTech responded immediately to our call and dispatched a technician to evaluate the problem without delay, despite the icy roads. Based on the evaluation, we decided to replace our 25-year-old heating system. Chi Shen, their Technical Supervisor, came on-site to assess and prepare for the installation. He clearly explained the replacement options and patiently answered all of our questions until we felt confident in our choice.

The very next day, the installation crew arrived and completed the job professionally and efficiently. We are extremely satisfied with the entire process—from the first phone call to the final installation. Their communication was prompt, clear, and professional, with text messages to confirm scheduling and email quotes for pricing.

We’ve used GreenTech’s services several times for both our residence and rental properties. They’ve earned our trust and have become our go-to company for all HVAC repairs and installations. Highly recommended!

We needed to replace our 15 year old AC, and Greentech did an excellent job installing the new Daikin replacement.

We received a very clear upfront quote that was very detailed. They were very professional and answered all our questions. Manager Shen was a great person to deal with.

Greentech let us schedule the install on Saturday which was very convenient for us. The crew came on time. Throughout the installation process there were a couple of minor issues which were promptly resolved: when we reported a sensor problem the team was willing to come back the same day and the following day as well to fix it.

We wholeheartedly recommend them. They provided a very high level of customer service that is not easy to get. Friendly and very professional!

From the very first inspection, it was clear that their level of professionalism was exceptional. Lucas took the time to thoroughly inspect the entire system, not just the equipment itself, but also the airflow, return and supply ducts, and overall system design. He carefully measured and calculated what size system would actually work best for my home, instead of simply recommending a larger unit.

They designed a solution that was both appropriate for my home and affordable, and even re-designed the ductwork to improve airflow, efficiency, and comfort. Everything was clearly explained, which made the whole process feel very transparent and trustworthy.

On installation day, the crew was extremely careful and respectful of my home. All entrances, hallways, and stairs were fully covered with protective floor coverings, and they cleaned everything thoroughly before leaving. The house was left spotless.

The entire experience, from diagnosis to installation, was professional, detailed, and stress-free. I’m very happy with the results and would absolutely recommend them to anyone looking for quality HVAC work.

GreenTech Engineering service is very professional and they always offer cost effective solutions help you to save your money prior replacing new AC. In addition, their response rate is very fast, usually order place and within 24 hours next day they will have technician come to your place repair AC issue, this is extremely valuable. Their price is reasonable and competitive and after service is excellent. I have no doubt and hesitation to refer to all my friends using GreenTech engineering services

Greentech installed two brand new Daikin systems for us (AC + Furnace) in August 2024. As of Jan, 2026, we had contacted GT a few times on various issues. The communication has always been smooth. GT's response was timely and professional. This review is for the most recent visit by GT technician Mr. Jennings on 1/27/26. Since Dec. 2025, I started to receive email from Google NEST reporting that the room temperature has been dropping even heating is "on". The flames would shut off after about 5-10 minutes with error code E33. I contacted GT about the issue on 1/24/26. Since it was in the middle of the winter snow period, GT could not immediately dispatch a technician due to road condition. On 1/27/26, Mr. Jennings was finally able to come even the road condition was still icy. After spending about 30 minutes, Mr. Jennings was able to amend the problem. According to him, he adjusted the fan speed so the system would not overheat and consequently shut off the flames. The service charge was $80, which by itself is reasonable thou this is my first time ever calling for a HVAC service. However, I would think such fan speed and pressure settings should have been done correctly during installation. I contacted GT and they agreed to refund the service charge. I would highly recommend GT. They offer very reasonable prices and backed up with great customer service.
One suggestion to the installer is the installer should sweep clean the metal shards left inside the unit as there are exposed electronics. If the shards got picked up my high pressure air flow, there could be risk of shorting. See pictures.

I purchased this house in July of this year, and shortly after, my system started leaking refrigerant. I contacted several contractors for quotes and possible solutions. After doing my research, I decided to go with Greentech Engineering Heating & Air Conditioning.

I chose them for several reasons:

Transparent Pricing: Their pricing and proposed solution were very reasonable. There were no hidden charges and no hassles throughout the process.

Right Solution, No Upselling: The solution they provided met our exact needs without any unnecessary upselling. Thank you to Shen Chi and the team.

Excellent Communication: Their communication was much better than other local businesses, and they even offer weekend support.

Punctuality: They arrived on time for both the quotation day and the installation day, which I really appreciated.

Attention to Detail: Some contractors walked on my floors without shoe covers, but Shen always arrived prepared with shoe covers and was consistently polite and professional. During the HVAC installation, the team used mats to protect the floors.

Overall, I am very happy with their service.

Great equipment and service

Rod at Trane Carrollton was very helpful!

their phone service is the worse and the times i have gone in person, i dont get attended even if there is noone in there