Accelerated Mechanical Services Llc

Accelerated Mechanical Services Llc works out of Dallas, TX and handles HVAC jobs for homes and businesses across the area. The outfit takes on residential heating and cooling systems along with bigger commercial refrigeration and data center equipment. Their technicians cover everything from standard air conditioners and furnaces to heat pumps, air handlers, cooling towers, and chillers. With twenty four hour on site service available for commercial setups, they aim to keep systems running through routine checks or sudden breakdowns that hit during extreme Texas weather.

Technicians handle maintenance visits, emergency repairs, and full installations on packaged units, boilers, and controls. One customer described a late night heater failure where a tech arrived within the hour after a courtesy call to confirm timing. Another called for help with an air conditioner that never cooled properly after installation, only to learn later about an undetected leak. Reviews also mention jobs on ultra low temp chambers, pumps, and duct work where crews performed oil analysis or vibration checks, though some preventive maintenance calls ended with lost parts or improper reassembly on the equipment.

Homeowners and business owners consistently mention fast arrival times, straightforward pricing, and direct updates when the work goes smoothly. At the same time the record shows uneven quality on some repairs and installations that left systems underperforming. The low overall mark reflects those repeated shortfalls in execution despite the quicker responses on certain calls. DIRT Score 2.59 from 11 reviews on Finds.

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“The absolutely most honest and reliable HVAC company I have ever worked with. Always quick to respond, stand by their work, and have fair prices. Highly recommended for your HVAC needs.”

“My company has been using Accelerated Mechanical for years and I am not sure if there is a single technician left there who has the slightest clue what they are doing. Almost every single time they come to do preventative maintenance, they break something, lose a part, or improperly re-assemble the equipment they are working on. It has become the worst running joke in the world. They have charged us a small fortune for their services supposedly intended to keep our equipment in good repair (only sometimes performing the actual service being charged) and another small fortune for repairing the things they have broken. It wasn't always this way, but I do not believe the current operation is particularly trustworthy. They have no pride or shame and have been deplorable to our poor executive assistant, who has had the misfortune of having to deal with them. For your own sake, learn from our mistakes and stay far, far away.”

“We bought a new AC from them 4 years ago and a service plan through about three years of it. The AC never cooled right and we'd call the company for service and they kept making excuses that it was something else. We finally got another guy to come over to check on it 4 years later and it had a leak for who knows how long. We ended up getting the coil replaced, but in the meantime we felt this company sold us a lemon. So not happy with that. I heard they have new ownership they may be a better company now, but they have never gotten back to me.”

“Wow!! I've never experienced such great service! I called this company late last night because my heater had gone out and I woke up freezing. They had someone out within the hour. The technician gave me a courtesy call to let me know when I could expect to see them and they were there on time. The tech was very polite and walked me through, step by step, of what would happen. After maybe an hour, my system was back up and running. I also purchsed the preventative maintenance plan to keep my system running smoothly and avoid anymore suprises. Thanks AMS!!”

“Prompt, friendly and affordable service. I couldn't be more pleased with this company. I live in the country about 30 miles south of Dallas. Accelerated Mechanical Services took care of my air conditioner problems the same day I called for service. The technician explained to me what the problem was and the cost for the repair. No surprises!”