What services does the company offer?

The company offers a complete range of plumbing and heating services, including new commercial construction projects, commercial expansion, and new construction. They specialize in serving commercial clients and have experience with projects of all sizes.

What is the company's area of service?

Demonte Plumbing & Heating is fully licensed and insured in both Suffolk and Nassau counties, making them the complete resource for all commercial plumbing needs on Long Island.

What certifications or qualifications does the company have?

The company is fully licensed and insured in both Suffolk and Nassau counties, demonstrating their expertise and commitment to operating legally and responsibly.

How can customers get in touch with the company?

Customers can visit the company's office, call their phone number, or email their designated contact to inquire about services or schedule a project.

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Voyager DBDeep data on millions of local businesses, with verified decision-makers to reveal.Contact ResearchHand-built prospect lists from human researchers, delivered in 24 hours.People SearchFind owners and decision-makers by job title, seniority and department.Chrome ExtensionColdlytics in your browser - prospect any business as you browse the web.IntegrationsInstantly, Smartlead, lemlist, Clay, HighLevel, plus Claude and ChatGPT over MCP.

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Demonte Plumbing

$2.4M revenue • 12 employees • 367 Veterans Memorial Hwy, Commack, NY, 11725, United States

Last Updated Feb 17, 2026

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Company Overview

Company Name

Demonte Plumbing

Address

367 Veterans Memorial Hwy, Commack, NY, 11725, United States

Website

demonteplumbing.com

Phone

(631) 864-2346

Approx. Annual Revenue

$2.4M

Employees

Established

2012

Google Reviews

4.1 (7 reviews)

Google Business Category

Plumber

About Demonte Plumbing

Demonte Plumbing & Heating Corp., located in Commack, New York, has been a trusted provider of commercial plumbing and heating services since 1995. Fully licensed and insured in both Suffolk and Nassau counties, the company specializes in new commercial construction projects and building expansions, offering a range of complementary services to support its clients' properties.

Business Profile

Read from the Demonte Plumbing website on Oct 27, 2026. Hover an item to see the exact wording it came from.

Ownership (as declared by the business)

Family-owned

About the website

Website quality (AI-assessed): 6/10 · Dated design and thin content; No contact form or booking
Website by: LI Web Guy Inc

Recent changes

What changed on the Demonte Plumbing website and Google listing, as detected by Coldlytics on each visit.

Oct 27, 2026
Estimated headcount moved from 6-10 to 11-20 employees

Coldlytics tracks changes like these across millions of businesses, so you can reach companies the moment they add a pixel, start hiring, or switch software.

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Plumbing Companies near Commack, NY

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Frequently Asked Questions about Demonte Plumbing

Technologies Used

Key Decision Makers

Michael Oshea Vice President

Robert DeMonte Owner