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Verified record
License not state-verified. We could not confirm a current registration in the state registry. Insurance is self-reported. Look up in the official Massachusetts registry ↗
- 6 reviews in the last 6 monthsNo negatives
- 9 work photos
Highlights
- Mini-split tune-up — fixed a leak left from a prior install
- Same-day service — responded quickly to a Facebook AC request
MDZ HVAC is a Chelsea shop with a short record so far — six Google reviews, all from mid-2026. The specifics that come through: a mini-split tune-up and deep cleaning where Joan, on time and communicative, also fixed a water leak left over from a previous installation, and a same-day AC repair arranged after a customer posted on Facebook, handled by Mr. Bello and his son. There isn't much of a track record yet beyond these few jobs, and several of the reviews are short on detail — worth keeping in mind given how new the review history is.
Read the comments
Most recent comments
- 5.0Jul 30, 2026
It’s a great guy and so friendly, professional and just gives me a good advice. I really appreciate and recommend his job Thanks Joan for the great job u did at my place. Is anyone want a grate price and service call this guy.
— Edwin MiguelView on Google Reviews ↗ - 5.0Jul 28, 2026
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
— Ginny S.View on Google Reviews ↗ - 5.0Jul 24, 2026
I shared on Facebook I needed someone to help me with my AC unit. MDZ on there on reached out to me. They were on it they set me up with same day service.. Mr Bello and his son come to my home and went above and beyond to help fix my situation. I could not say enough nice things about this company. They made the process so easy for me and took there time making sure it was right. If you are looking for Honest, Reliable, Dedicated hard working men. Then this is the place for you. Also his wife handles making the whole thing go even smoother. I am so so happy I found them he is my new H-Vac company 10 out of 10!!!!!!!!
— Brett SilvaView on Google Reviews ↗ - 5.0Jul 8, 2026
Muy complacido con el trabajo de MDZ, profesional, capacitado, atento a los detalles, extremadamente complacido y sin dudas lo recomiendo
— Luis PadillaView on Google Reviews ↗ - 5.0Jul 4, 2026
Great service. Joan was great.
— Oscar RamosView on Google Reviews ↗
What does heating and cooling work cost in Greater Boston?
Typical Greater Boston range for this kind of work, from regional averages — not a quote from MDZ HVAC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
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