33 Reasons To Trust ATS Mechanical Heating & AC:
# Reason Us Them
1 Mitsubishi Diamond Contractor of The Year 2021
2 2022 Mitsubishi Diamond Elite Award for the most trained company in the southwest. As many hours as all others put together.
3 Mitsubishi Elite Diamond Contractor-Highest level that can be achieved.
4 American Standard Customer Care Dealer-Must meet a higher level of standards required by factory
5 Armstrong Air Pro Team Elite Contractor able to offer automatic unit replacement under warranty for compressor break or coil leak
6 Experience serving residential and commercial customers for 30 years
7 Licensed in Texas since 1999. (24years) TACLA17658C
8 Energy Star Certified installations exceeds all local code requirements. For new construction certification.
9 Employee background checks to ensure a safe work environment and customer experience.
10 Employee drug testing to ensure a safe work environment and customer experience.
11 Employee drivers license check to ensure a safe work environment and customer experience.
12 Uniformed employees for easy identification for our customers
13 Exceed state Insurance requirements
14 Live trained person receiving calls from customers for prompt service
15 Continuous communication between our office and customers in process of service or installation
16 Preventative Maintenance plans with two visits for residential customers
17 Preventative Maintenance plans with Bi-Yearly or Quarterly visits for commercial customers
18 Expert in system analysis in solving customers comfort problems
19 Expert in duct system analysis when determining if system and ducts have been matched properly (80% Do Not)
20 Offer honest facts to help our customers make a decision
21 Expert in solving indoor pollution problems
22 100% Financing with zero money down and up to 144 months
23 Rolling carpet installed from door entrance to closet or attic access for floor protection
24 Offer to remove family heirlooms and furniture from pathways for a safe and secure installation
25 Sweep and vacuum floors after installation
26 Quality Inspection performed after installation
27 Registration on new equipment performed then emailed to customer. (10 & 12 year factory parts warranty)
28 Over 200 hours of continuing education and technical knowledge for each employee each year
29 EPA Certified for refrigerant handling
30 Member of the Air Conditioning Contractors of America
31 Professional service after the installation from our technicians
32 Customer Incentive Referral program
33 Mitsubishi design, installation, service and maintenance. (20 years)
What Customers Are Saying

Overall experience was great from start to finish. Would highly recommend! Was not the typical sales pitch in and out kind of deal. We were informed about the product we were going to purchase and given all the information we needed to make the right choice for our home. Nothing was forced on us, everything was based on facts and shown with proof. Our rep from the beginning was great! Thank you Brock.

Amadeo N

ATS is the best heating and AC company ever! I had my AC, furnace, and ducts replaced in July, and the workers that did it were all so sweet and did a fantastic job! I also had Shaun come over to perform a heating inspection this morning and he did a very thorough job. I appreciate how he took the time to explain to me what he checked. All in all, I absolutely love how professional, responsive, and caring this company is. I highly recommend them!

Ashley T

ATS was very prompt in coming out to fix the issues with my HVAC system. Jordan was very helpful and informative, and he walked me through everything he was doing. He was up front about all the cost and gave informed answers to all the questions I had. We will defiantly use ATS Mechanical and AC again!


I have been using ATS Mechanical for several years now, and I have always been impressed with their service and pricing. The owner, Barry Granger, and his techs, Shaun and now Jordan, are super knowledgeable about our system (one unit serving three levels) and ensure it runs optimally. They arrive on time, send a notification when close, and follow up with electronic documentation. I am on an annual plan, which is reasonably priced and includes a discount for parts and repairs. Highly recommend them.

Rich B

All I can say is excellent service. Absolutely will use ATS for my AC requirements moving forward.


Outstanding, professional organization. Owner personally evaluated heating/cooling loads for a replacement mini-split. A more applicable sized system recommended versus existing system, job cost estimate was very competitive versus other quotes. Install crew showed up right on time, very professional, job done right, great cleanup. Will no doubt use them again (and again)


We had new HVAC system out in our house and ATS went over serval options with us. This allowed us to make the best decision for our home and financially. Install was completed within a day.

Kaela B

ATS was great to work with. Upon scheduling the install, the crew came out got the mini split system working in no time. Very professional group. Look forward to using them in the future.

Chris O

Great communication, fast appointment and professional technician. Explained all the steps of repair and the cost was great value. My new “go to” company for HVAC services.

Robert J

The team at ATS Mechanical is first class. We have used them for the last two years and they have always been professional and extremely responsive. It is apparent that they truly care about the quality of their work. I would highly recommend them to anyone needing climate control work at their home or office.

Hal B

Professional, on time, and quality of service was excellent. Installers cleaned up and left nothing behind. Very happy with service from start to finish. ATS has also provided repair services before the install and I was always very happy with each visit.

Jerry M

I love this company…I’ve tried others but this one is by far the best! They are honest, reliable, and give great service. I know I can count on their expertise!

Estelle T

ATS Mechanical installed a Mitsubishi mini split system in my master bedroom, works very well and exceptionally quiet. ATS personal were very professional. Would highly recommend them.

Dennis B

These guys are amazing, I initially was using another company but called ATS for a second estimate when I had work done back in December and not only was their quote a 4 digit number cheaper, they were very quick, professional and I have not had any issues with their work.
They came out today to repair the other side of my system and not only found the issue, got it fixed and had me back up and running same day. Their guys are very knowledgeable in HVAC and it shows in the quality and expediency of their work.

Kevin D

ATS installed my Heating & AC system 4 years ago and has been providing routine checkups and maintenance services since. Quality service plus a valuable membership plan makes me a satisfied loyal customer.

Cynthia T
The Woodlands

At ATS Mechanical Heating & AC, we make sure we’re the only call you need to make. No matter the challenge, we resolve it to your satisfaction and deliver lasting results. Whether you’re interested in the purchase of industry-leading equipment or in need of skilled services, we provide honest answers, customized recommendations, and quality you can trust. ATS Mechanical Heating & AC is recognized for unsurpassed standards throughout Cypress, Tomball, Spring, The Woodlands, Conroe, Klein, Louetta, and Kohrville, TX.

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Cypress, TX

Tomball, TX

Klein, TX

Louetta, TX

Spring, TX

Kohrville, TX

The Woodlands, TX