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Honest HVAC service for homes across North Texas.
No surprises. No pressure. Just reliable heating and cooling from a team that respects your home.
Complete HVAC Services
From installation to ongoing care, we handle your heating and cooling needs.
Installing a new system?
Proper sizing & long-term performance
Expert system design and clean installation built to operate reliably long after day one.
- check_circleLoad calculation & system sizing
- check_circleHigh-efficiency equipment options
- check_circleClean installation & testing
- check_circleSmart thermostat integration
System not working right?
Accurate diagnostics, no upsell
We diagnose first and fix what's broken — not what's expensive.
- check_circleThorough diagnostic process
- check_circleHonest repair recommendations
- check_circleAll makes & models
- check_circleSame-day service available
Trying to avoid breakdowns?
Preventive maintenance that saves money
Routine care that extends system life and prevents costly emergency repairs.
- check_circleSeasonal tune-ups
- check_circleSafety & efficiency checks
- check_circlePriority scheduling
- check_circleMember discounts
Proven experience across residential & commercial HVAC
Residential Service & Repair
Extensive hands-on experience servicing a wide range of residential HVAC systems. From routine maintenance to complex troubleshooting, we've handled thousands of service calls across North Texas — gaining deep system knowledge through real-world problem solving, not guesswork.
Residential HVAC Installation
Proven experience with residential HVAC installations and replacements, including proper system sizing, load calculations, and clean, code-compliant installs. We focus on long-term performance — not just getting the system running, but getting it right.
Commercial New Construction & Large-Capacity Systems
Commercial new construction requires more than equipment replacement. We deliver end-to-end HVAC installation — from permit processing and rough-in wiring to final inspection — including 10+ ton large-capacity systems across retail, office, and industrial projects.
How we work
Diagnostic First
We don't guess. We use advanced diagnostic tools to understand exactly what is happening with your system before we recommend a solution.
Clear Communication
We explain the problem in plain English, not technical jargon. You'll know exactly what you're paying for and why it's necessary.
Respect for Property
We treat your home or business with care. We use shoe covers, drop cloths, and leave the workspace cleaner than we found it.
The people behind the work
UCBM HVAC is operated by a small, experienced team committed to getting the job done right the first time.
We focus on accurate diagnostics, clear explanations, and honest recommendations so customers understand their options before any work begins. We don't upsell or overcharge. We take pride in doing precise, reliable work and earning trust through consistency and results.
Jun Kim & Sean Jung
Owners & Lead Technicians
What customers say
Real feedback from real customers who trust us with their HVAC needs
“Pleasant experience with UCBM HVAC! I was looking for a technically sounding A/C consultation and away unnecessary sales pitch you typically get from most of the HVAC companies. Jun delivered just that and more. I highly recommend Jun and UCBM for HVAC needs.”
“I've been trusting them for 5 years now, and I'm always satisfied with their friendly and prompt service.”
“Best HVAC company! My AC wasn't working in the middle of summer and Jun easily fixed the issue. I haven't had an AC problem since then. Great service and super professional.”
“Two young technicians replaced my AC fan 3 hours ago. They have extensive AC knowledge, explained everything well, and were honest. I don't usually write reviews, but they deserve praise. You won't regret choosing them for repairs or replacements.”
“Professional and great fast service company ever! Better price, always good communication and fast answer even on the weekend 🙂”
“I had a water leak from the ceiling due to AC issues. Jun came the next day, checked everything thoroughly, and resolved all problems. His detailed and kind explanations made everything clear. The reasonable price and quick resolution relieved my stress. The AC works perfectly now with no leaks. I highly recommend UCBM Jun for anyone with AC problems!”
“The best customer service.”
“I contacted several companies (2 Korean, 3 American). American companies said they needed to diagnose on-site (charging under $200), but both Korean companies could narrow down the issue just from my description. Two young professionals came, explained everything well, and completed the work perfectly. They even vacuumed the dust from the attic! The price was most reasonable, and their friendly and prompt response was excellent. I'll recommend them to anyone with HVAC issues.”
“UCBM HVAC installed our new system last month and we couldn't be happier! The price was unbeatable, and the team was very professional. They explained everything clearly, making the whole process stress-free. I highly recommend Jun and his team for their exceptional service!”
“When the weather got hot, my AC wasn't working well. The first Korean company said I needed to replace the entire unit, which was too expensive. Through a friend's recommendation, I contacted UCBM Jun. Two Korean technicians came the next day, checked everything carefully, and said I only needed coil cleaning and part replacement/repair instead of full replacement. They completed everything the same day, and the AC has been working perfectly since! I was worried about the expense, but they fixed it at a very reasonable price. 100% satisfied and will use their service again!”
“Called them for an emergency repair on a Friday evening and they came out within 2 hours! Fixed our heating system quickly and at a fair price. Highly recommend for emergency services.”
“Even though I called late on Friday evening when my AC stopped working, they kindly helped me troubleshoot over the phone. I was worried about surviving the hot weekend until Monday, but they came out on the weekend for emergency service and fixed it. The price was surprisingly reasonable for such service. Thank you again, and I'll definitely use your service next time!”
“From quote to installation, everything was seamless. The crew was professional, respectful of our home, and the new AC system works perfectly. Great value for the quality of work.”
“Pleasant experience with UCBM HVAC! I was looking for a technically sounding A/C consultation and away unnecessary sales pitch you typically get from most of the HVAC companies. Jun delivered just that and more. I highly recommend Jun and UCBM for HVAC needs.”
“I've been trusting them for 5 years now, and I'm always satisfied with their friendly and prompt service.”
“Best HVAC company! My AC wasn't working in the middle of summer and Jun easily fixed the issue. I haven't had an AC problem since then. Great service and super professional.”
“Two young technicians replaced my AC fan 3 hours ago. They have extensive AC knowledge, explained everything well, and were honest. I don't usually write reviews, but they deserve praise. You won't regret choosing them for repairs or replacements.”
“Professional and great fast service company ever! Better price, always good communication and fast answer even on the weekend 🙂”
“I had a water leak from the ceiling due to AC issues. Jun came the next day, checked everything thoroughly, and resolved all problems. His detailed and kind explanations made everything clear. The reasonable price and quick resolution relieved my stress. The AC works perfectly now with no leaks. I highly recommend UCBM Jun for anyone with AC problems!”
“The best customer service.”
“I contacted several companies (2 Korean, 3 American). American companies said they needed to diagnose on-site (charging under $200), but both Korean companies could narrow down the issue just from my description. Two young professionals came, explained everything well, and completed the work perfectly. They even vacuumed the dust from the attic! The price was most reasonable, and their friendly and prompt response was excellent. I'll recommend them to anyone with HVAC issues.”
“UCBM HVAC installed our new system last month and we couldn't be happier! The price was unbeatable, and the team was very professional. They explained everything clearly, making the whole process stress-free. I highly recommend Jun and his team for their exceptional service!”
“When the weather got hot, my AC wasn't working well. The first Korean company said I needed to replace the entire unit, which was too expensive. Through a friend's recommendation, I contacted UCBM Jun. Two Korean technicians came the next day, checked everything carefully, and said I only needed coil cleaning and part replacement/repair instead of full replacement. They completed everything the same day, and the AC has been working perfectly since! I was worried about the expense, but they fixed it at a very reasonable price. 100% satisfied and will use their service again!”
“Called them for an emergency repair on a Friday evening and they came out within 2 hours! Fixed our heating system quickly and at a fair price. Highly recommend for emergency services.”
“Even though I called late on Friday evening when my AC stopped working, they kindly helped me troubleshoot over the phone. I was worried about surviving the hot weekend until Monday, but they came out on the weekend for emergency service and fixed it. The price was surprisingly reasonable for such service. Thank you again, and I'll definitely use your service next time!”
“From quote to installation, everything was seamless. The crew was professional, respectful of our home, and the new AC system works perfectly. Great value for the quality of work.”
Get in touch
Emergency? Please call the cell number directly for the fastest response outside of business hours.
Service Area
We proudly serve residential and commercial clients across North Texas and the Dallas–Fort Worth metro area.
- Dallas
- Irving
- Plano
- Frisco
- McKinney
- Carrollton
- Richardson
- Melissa
- Anna
- ...and surrounding areas