When your AC quits in the Texas heat, you need someone who shows up, tells you the truth, and gets it fixed right. TD Mechanical Services is a locally owned company built on 25 years of hands-on experience — cooling and heating, residential and commercial.
From emergency AC repair to full system installs, we keep your home or business comfortable year-round.
Fast, reliable repairs and new system installs that keep you cool through the Texas summer.
Request Service →Furnace repair, installation, and safety checks so your home stays warm when it counts.
Request Service →Preventative tune-ups that cut energy bills and stop breakdowns before they start.
Request Service →Duct and vent installation and repair to restore airflow, comfort, and efficiency.
Request Service →Efficient, zoned comfort for additions, garages, and homes without ductwork.
Request Service →Smart and programmable thermostat installation and repair for total control.
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TD Mechanical Services is owned and operated by Darrell Bull — and it’s built on a rock-solid foundation of 25 years in the HVAC industry.
Darrell started as an apprentice technician at just 16 years old and worked his way up into supervisory, managerial, and teaching roles. He’s worked extensively in both residential and commercial HVAC repair, and he brings that broad range of skills and experience to every single job.
Darrell takes pride in every job, no matter how big or small, bringing a commitment to excellence and integrity to every customer. Your satisfaction is paramount to us — and that’s a promise, not a slogan.
From apprentice at 16 to supervisor, manager, and trainer — real, hands-on expertise.
From a home system to a rooftop commercial unit, we’ve done it all.
You’re hiring a neighbor, not a call center. We answer the phone and show up.
Honest recommendations, fair pricing, and work we stand behind — every time.
A few of our recent unit replacements — clean, professional work we’re proud to put our name on.
Not sure if you’re in our range? Give us a call — we’re always happy to help.
Real reviews from TD Mechanical customers across the north Houston area.
“We can’t say enough good things about TD Mechanical Services! Darrell is a wonderful person and very knowledgeable, not to mention HONEST! He was very thorough with everything we asked about & checked out. We will certainly be using him for all our HVAC needs moving forward!”
“We highly recommend TD Mechanical Services! Darrell replaced our central air system and we couldn’t be more pleased! He was quick, professional, honest, efficient, and his pricing is very reasonable. Give him a call for all of your HVAC needs, residential or commercial!”
“I cannot recommend TD Mechanical enough. We needed a whole system replacement, and TD got the job done FAST (much appreciated in this July heat!). Extremely competitive pricing, and they operate with integrity. They’re willing to go the extra mile for their customers.”
Call now for fast, honest HVAC service — or request service online and we’ll get right back to you.
Reach out any time — we’ll get your home or business back to comfortable.
