If you hire this pro, you’re covered by a money-back guarantee. Learn more
If you hire this pro, you’re covered by a money-back guarantee. Learn more
About
MDZ HVAC proudly serves the local area with reliable, professional heating and cooling services. As a one-person operation, you’ll work directly with the technician who diagnoses, explains, and completes your job from start to finish.
I specialize in HVAC repairs, seasonal maintenance, central AC and mini-split installations, and heating system service. You can count on free estimates, fair pricing, honest recommendations, and workmanship that’s done right the first time—whether it’s an urgent repair or a new installation.
Your comfort and satisfaction are always the priority. Contact MDZ HVAC to schedule your estimate or discuss your project.
Overview
Current Top Pro
Hired 16 times
Serves Chelsea, MA
Background checked
1 employee
Business hours
This pro hasn't listed their business hours.
Payment methods
This pro accepts payments via Apple Pay, Cash, PayPal, Square cash app, and Venmo.
Customers rated this pro highly for professionalism, work quality, and punctuality.
Exceptional 5.0
15 reviews
5
100%
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Read reviews that mention:
Stanley G.
Aug 10, 2026
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Hired on Thumbtack
In the middle of a heat wave my AC unit crashed, I reached out to many vendors who all said 2 or 3 days.MDZ HVAC was responsive and sent a technician the same day. The technician was polite, professional and quite Knowledgeable. He was able to have me up and running in an hour, I highly recommend MDZ HVAC!
Details: Routine maintenance • Only warm air is blowing from the vents • Outside • Outside • House • Owner
Central Air Conditioning Repair or Maintenance
Randy And Tiffany G.
3 weeks ago
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Hired on Thumbtack
We are so happy with our experience with MDZ HVAC! From the start, their communication was wonderful. Almost immediately after I submitted my request on Thumbtack, I received a phone call, a text message, and communication through the app. I was incredibly impressed with how responsive they were!
He even arrived early after contacting me first to make sure that was okay, which I really appreciated. He was so kind, friendly, knowledgeable, and hardworking. He was able to identify and help us with the leak we were having around our furnace/HVAC system, explained everything clearly, and even made helpful recommendations regarding some electrical items we should have addressed.
He also left the area SO clean, which was greatly appreciated!
It is such a relief to find someone who is knowledgeable, trustworthy, responsive, and genuinely kind. We had a wonderful experience and will absolutely be using MDZ HVAC again for any future HVAC needs. I would highly recommend them!
Thank you so much for all of your help! 😊
Details: Repair • Basement • Outside • House • Owner
Central Air Conditioning Repair or Maintenance
RANJAN E.
2 weeks ago
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Hired on Thumbtack
They were prompt - I needed them to clean out the condensate line as it got clogged. They worked well and answered question I had ask
Central Air Conditioning Repair or Maintenance
Ginny S.
Jul 28, 2026
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From Google
I recently hired mdz hvac for mini split tune up and deep cleaning, and I highly recommend their services. Joan was on time and super communicative. He is very thorough in his work and made sure everything is done correctly. One of my splits had a water leak from previous installation and he also fixed it for me.100% would hire again! Will be using them for any hvac services
Ben B.
Aug 7, 2026
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From Google
Excellent and thorough work. Arrived exactly on time. Easy to schedule service- very flexible. Climbed into hot attic to service the overhead unit, two wall units, and reviewed the motherboard for errors. Highly recommend
