When you need a new HVAC system, call Trahan Mechanical for quality products and services. Count on us to provide only the best in new heating and air conditioning system design and installation. We also offer sheet metal fabrication to customize every job. Call Trahan Mechanical today at 415-457-5541, where your comfort is our number-one priority. HVAC systems have become essential to our lives, and old systems can't keep up with the demands of today. We are here to design and install new systems to meet your needs. Call us today at 415-457-5541 for quality products and services. Trahan Mechanical, serving Marin County since 1985.


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David A.
David A.


Provided by YP.com

Trahan recommended and installed a zone system on our existing HVAC. When summer heat came, the air conditioner froze up. A service technician for our home warranty examined the system and told us that the airflow to the zones was insufficient because the duct work was too small and poorly installed. I called Trahan EIGHT TIMES and left messages for Pat Trahan, who never called back. On the eighth call I threatened the receptionist that I would go to the BBB to complain, and only then did I get an email in which Trahan refused to address the issue. He said he was on vacation in Europe and couldn't even get a technician to go look at the problem. I finally got another contractor to look at the system who came to the same conclusion about the installation Trahan did. I had to have the new contractor redo the work that Trahan did and I am now pursuing an action to get reimbursement. Terrible work, even worse customer service. Don't use Trahan, and don't let your general contractor!


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More Business Info

Serving Marin County Since 1985

Expert heating and air conditioning system service and installation.

BBB Rating
BBB Rating and Accreditation information may be delayed up to a week.
Regular Hours
Mon - Fri:
Sat - SunClosed
Extra Phones

Phone: 415-457-5541

Service, Repair and Installation, Ventilation and Heating, Qualified Service Technicians, Air Conditioning, Systems Designed for Greater Efficiency, Boiler Service and Installation, Duct Inspections Testing and Monitoring, Hydronic Heating Systems,
Senior Savers
Payment method
amex, visa, discover, mastercard
Environmentally Conscious - Green Heating and Cooling Equipment

Insured PL and PD

Lic #774154

All Makes and Models

Trahan Mechanical

Other Email

Social Links
Heating Contractors & Specialties, Air Conditioning Contractors & Systems, Air Conditioning Equipment & Systems, Air Conditioning Service & Repair, Furnace Repair & Cleaning, Furnaces-Heating, Heating Equipment & Systems, Heating, Ventilating & Air Conditioning Engineers, Sheet Metal Work
Other Information

Services: Duct Repair & Service, Heating, Installation, Air Duct Cleaning

Same Day Service: Yes

Warranties: Yes

Data provided by one or more of the following: DexYP, Data Axle, Yext.

Payment Options