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MDZ HVAC

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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 33 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.

Social media

Instagram

Services offered
Service needed
Type of heating system

Furnace

Boiler

Heat Pump

Fuel source

Natural gas

Propane gas

Oil

Electricity

Projects and media
Projects and media
Reviews

Customers rated this pro highly for professionalism, work quality, and punctuality.

Exceptional 5.0

21 reviews

5

100%

4

0%

3

0%

2

0%

1

0%

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Read reviews that mention:


pro avatar
Randy And Tiffany G.

Aug 25, 2026

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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
pro avatar
Ginny S.

Jul 28, 2026

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From Google

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RANJAN E.

Sep 4, 2026

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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
pro avatar
Nichole H.

4 weeks ago

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Hired on Thumbtack

Was efficient and helpful when evaluating our issue with the HVAC!
Central Air Conditioning Repair or Maintenance
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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
Credentials
Background Check

Joan Mendoza Ventura

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