GCM (Gonsalves Custom Mechanical LLC)

5.0 |9 Verified Ratings
Write a Review

GCM (Gonsalves Custom Mechanical LLC)

5.0 | 9 Verified Ratings
Write a Review


PO Box 469
St. Augustine, FL 32086
Your use of our services is governed by our Terms & Conditions

GCM (Gonsalves Custom Mechanical LLC)

Welcome to GCM! We specialize in pool heater and Central A/C unit installations and upgrades as well as repair. We take pride in commitment to the quality of work we produce, and the long-term relationships we build with our clients.We guarantee quality and complete satisfaction at no additional cost on all of our services. We set ourselves apart from our competitors by offering the highest quality of work combined with experience, guaranteed. Call today for a free estimate!


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Quick Facts

Business Hours
(Please call to confirm)
  • Commercial
  • Free Estimates
  • Residential
  • Credit Cards Accepted


In Business Since: 2020
State Licensing
Trade: Registered Class A air-conditioning
License #: RA13067662
Expiration: 08-31-2023
Type: General Liability
Expiration: 01-15-2023
HomeAdvisor Screened. View Details

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To find more licensing information for your state, visit our Licensing Requirements page.

Business Overview

How We Got Started

I chose to work in this industry because My father is mechanical contractor and engineer, i started young!.

We started in this industry in 2000.

We describe our business as Family owned and operated


GCM (Gonsalves Custom Mechanical LLC)

My Work
3 Projects
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Ratings & Reviews
GCM (Gonsalves Custom Mechanical LLC)

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
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5.0   |  
The Pro was on time, very professional and efficient.
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5.0   |  
My Condo AC quit working at 7:30 pm on Friday night. Zach was the first one to respond. I talked with him on the phone at 8:16 pm and he arrived at my condo at 8:43pm. I was going out of town the next day and didn't want to leave my 82 year young mother ( who lives with me) waiting for a repair man show up. Zach was very professional, friendly, and quick. He was a lifesaver! I highly recommend Zach! May Jesus bless you Zach!
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5.0   |  
He is the go to man for your A/C and heating needs. He was very knowledgeable and the work was done for the best price of any other company. I will hire him again.
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5.0   |  
Zack was great to work with. He was friendly, quick to respond, evaluate the issue with our pool heater, and to repair. Highly recommend!
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5.0   |  
My pool pump died 2 days prior to us leaving for an out of town trip Zack was able to stop by and replace the pump in 1.5 days and did a great job What a guy Harry Santucci
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5.0   |  
Review by
Project: Install a Central Air Conditioning System
He is fantastic with his professionalism, quality and price.
5.0   |  
Zach was Awsome! Installed a new Heater for our pool! He spent The necessary time to do the job right first time!
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5.0   |  
Great. Service with affordable prices. Super friendly and informative!
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5.0   |  
Review by in Saint Augustine, FL
The Owner Zack Gonsalves is a wonderful person! He gives great customer service and is very fair with his pricing. I highly recommend him for all your mechanical or maintenance needs!
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Showing 1-9 of 9
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Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

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