PO Box 541074
Waltham, MA 02454
7817208137

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Local Reviews

Rated 5.0 out of 5 stars based on 225 customer reviews

Great Service CCL Mechanical

Seamus C with CCL Mechanical came to see an installation error (By another company) on my brand new Rinnai instant water heater. Seamus was on time and very professional, he diagnosed the problem quickly and went to work to fix the issue. Seamus offered several options for the fix and was up front with all the costs associated with the service. I'll highly recommend CCL Mechanical for your HVAC and Plumbing needs. They're licensed and provide high quality service.

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Amazing Company

Everyone from the Owners, office workers, plumbers to the excavators were amazing. So helpful and they do amazing work. My main sewer line was replaced. I would recommend in a heartbeat!!!

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Several jobs at new condo!

Mike and Erica both provided great service. After an initial visit where we identified several areas that needed improvement Mike worked a full day to address all of them. He was courteous, professional, thoughtful and thorough in his work. He also has a great sense of humor. We look forward to working with Mike and CCL for many years to come.

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Great complete service

Mike is a very professional, very intelligent and friendly person. He found some problems and fixed it with an understandable explanation. He is a good communicater. I would love to thank him personally, but I don't have his telephone. Thanks you. Sincerely,

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Seamus was really good!

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Great and quick service

It all went smoothly and was great.

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Great Service

Very positive. Seamus was knowledgable, helpful and capable

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Michael K.

Efficient and knowledgeable technician. Does excellent work.

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Excellent service from CCL Mechanical

Michael installed a new, bigger filter box for my furnace and his work was first-rate. Highly recommended.

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Michael K.

Technician was knowledgeable and took his time to make sure job was done right.

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Job Locations

Michael K.

Michael K. Job Checkin

Replace brass water piping that contains lead with copper


John S.

John S. Job Checkin

Water heater vent

Water heater vent

Seamus C.

Seamus C. Job Checkin

Repipe to the intake and exhaust to a tankless water heater unit, and got the system working properly again.


Seamus C.

Seamus C. Job Checkin


Seamus C.

Seamus C. Job Checkin


John S.

John S. Job Checkin

Finish plumbing


John S.

John S. Job Checkin

Gas piping

Gas piping

Michael K.

Michael K. Job Checkin

4000 hour maintenance on Rinnai unit


Michael K.

Michael K. Job Checkin

Navian maintenance


Michael K.

Michael K. Job Checkin


Michael K.

Michael K. Job Checkin

Dry wall patching and texture, floor repair


Seamus C.

Seamus C. Job Checkin

Fixed issues on a heating system, and repipe the exhaust in a safer way


Michael K.

Michael K. Job Checkin

Install reneye combo heating and domestic hot water


Seamus C.

Seamus C. Job Checkin

Replaced a boiler that failed because of a manufacturer defect


Seamus C.

Seamus C. Job Checkin

Completed a annual service on a forced air furnace