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McMaster Mechanical
Small business Owner/Operator of McMaster Mechanical. Over 20 years personal experience in the Heating and Air Conditioning industry. Providing service, repair, maintenance, equipment change out’s, retrofits and additions. Low overhead and operating expenses allowing my customers to save more money for the things they love, while being able to afford what they need. Give me a call for a very competitive quote on your next HVAC related project. I treat my customers with respect, dignity and most of all, like family.
From BuildZoom: McMaster Mechanical, 20903 Ambushers St, Diamond Bar, CA (Owned by: Bryan Jeffrey Heer) holds a Warm Air Heating, Ventilating And Air Conditioning license according to the California license board.
Their BuildZoom score of 100 ranks in the top 13% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring McMaster Mechanical, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
McMaster Mechanical Contact Information
McMaster Mechanical Reviews
5 out of 5 stars, based on
2
reviews
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By Arthur L.July 15, 2021
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By LoganJune 1, 2020
Chose Bryan to install my new AC system and furnace and it works great! He was very informative and transparent which I like especially for a big service/expense like this because it showed his experience and passion for the work. He was also super fair on price and showed up when he said he would. Definitely appreciate his skills combined with good customer service!
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McMaster Mechanical License info
Verified License
| License # | 879152 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for McMaster Mechanical at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
I had a few contractors come to look at my a.c. unit. The first looked at the unit told me it needed to be replaced. The second contractor told me the unit was leakong Freon and recommended replacement of the unit. I called Brian he looked at the unit tested some circuits and told me the unit was working but he wanted to check out few other thing. He ended up changing a piece that he said needed to be replaced. After doing so he told me to turn on the a.c. it worked with a few minutes I could feel the cool air. Brian is very thorough and knows his trade very well. He said my unit had seen better day however he was able to get my a.c. working. Brian you are the best. I would not hesitate to use Brian for any a.c. issue. Arthur