Big D Mechanical Llc

Big D Mechanical Llc works out of Plano, Texas and handles HVAC jobs across the DFW Metroplex. The company brings over 46 years of experience to both homes and commercial buildings where summers run hot and systems take a beating. Homeowners call them when an air conditioner runs nonstop yet leaves rooms sticky or when a furnace needs attention before cold weather hits. Their crews focus on residential service calls, full system swaps, and quick fixes that keep daily life comfortable without extra layers of hassle. They cover everything from routine checks to emergency repairs that pop up at odd hours in this part of Texas.

Technicians like Jared and Josh handle the day-to-day work on site. Jared recently fixed an upstairs humidity problem caused by an oversized unit the builder had put in, then swapped it for the right size and wrapped the job fast. Josh arrived for a second opinion after another outfit claimed a full replacement was needed, checked the coils, and laid out the actual repair in plain terms so the owner could decide without pressure. Brian handled pre-sale inspection fixes on short notice by walking through each item and completing the fixes the same day. Calls often start with Jen who lines up the schedule and keeps everyone updated on arrival times and next steps.

Customers note that the crews show up when promised, explain what broke and what it costs, and finish without leaving loose ends. Reviews highlight honest assessments that avoid unneeded replacements along with clear updates from the techs during the job. Speed matters when a home sale depends on quick corrections and quality shows in systems that hold up after the visit. Communication stays direct from the first call through the final check. DIRT Score 4.79 from 28 reviews on Finds.

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“Our upstairs has always felt humid and sticky. Jared knew exactly what the problem was. The AC unit our builder installed was too large for our space, and it was making the humidity level too high. Jared and his team did a great job installing a new unit. They were quick and professional and took care to put down tarps, protecting my carpet. It feels great upstairs now, and my daughter reported that her sleep is so much better. Plus, we ended up with a cute, energy-efficient AC unit.”

“I can't say enough how good Big D Mechanical is! We had another company come out that said we need a new A/C after installing a control board. We wanted to get a second opinion and chose Big D Mechanical. Josh, came out on time, He was very honest and good at communicating the details. Our coils needed cleaning and a couple of cheap parts. He showed us the diagnostic and the A/C was operating and healthy again! Thank you Big D Mechanical and Josh for saving our old A/C! This is the only HVAC company I will use for now on!”

“Great company! Spoke with Jen and she was amazing, would highly recommend!”

“Selling our home. Inspector dinged us for a couple issues. Called Jared and he fit us into their schedule quickly. Brian came out and talked me through the issues and completed his own inspection and repairs. VERY professional and will recommend Big D to anyone needing a competent and courteous HVAC company!”

“We recently had Big D Mechanical out for two separate HVAC services and were extremely pleased with the results. The first job involved customized ductwork and problem solving, which they completed efficiently and even faster than expected. The second service was even more impressive with the replacement of a difficult-to-source compressor. They were able to locate the part quickly and had it installed the very next day, which was a huge relief. Throughout both projects, the team was professional, knowledgeable, and very responsive. They took the time to clearly explain the issues and were happy to answer all of my questions—both before the work started and while it was in progress. Highly recommend them for anyone looking for honest and reliable HVAC service.”