Insights

Established expertise Longstanding Chicago-based mechanical contracting firm with 75+ years in complex plumbing, heating, and fire protection design and installation presents a stable, experienced partner for large retrofits and new build projects.

Scale and capacity Mid-sized firm (51-200 employees) with demonstrated capability to handle projects requiring on-site engineering, CAD, purchasing, and field execution, suggesting reliability for mid-market commercial, industrial, and institutional opportunities.

Retrofitting specialty Notable strength in retrofitting and rehabbing existing mechanical systems, positioning for renovation, modernization, and facility improvement opportunities in aging Chicago-area infrastructure.

Integrated services Full service offering from design through fabrication and installation, enabling single-source management for complex mechanical, plumbing, and fire protection projects with potential for streamlined procurement and scheduling.

Financial and market signals Revenue in the range of tens of millions indicates solid scale with room for growth; target opportunities likely include mid-to-large scale commercial, government, and healthcare facilities seeking dependable, long-term partnerships.

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Great Lakes Plumbing Heating Fire Protection Company Tech Stack

Great Lakes Plumbing Heating Fire Protection Company uses 8 technology products and services including gstatic.com, RSS, WordPress, and more. Explore Great Lakes Plumbing Heating Fire Protection Company's tech stack below.

gstatic.com
Content Delivery Network
RSS
Content Management System
WordPress
Content Management System
MySQL
Database
Font Awesome
Font Scripts
jQuery Migrate
Javascript Libraries
PHP
Programming Languages
Yoast SEO
Search Engines

Great Lakes Plumbing Heating Fire Protection Company's Email Address Formats

Great Lakes Plumbing Heating Fire Protection Company uses at least 4 email formats:

Great Lakes Plumbing Heating Fire Protection Company Email Formats	Example	Percentage
FLast@glph.com	JDoe@glph.com	94%
First.Last@glph.com	John.Doe@glph.com	4%
Last@glph.com	Doe@glph.com	1%
FirLast@glph.com	JohDoe@glph.com	1%

Frequently Asked Questions

What is Great Lakes Plumbing Heating Fire Protection Company's phone number?

You can contact Great Lakes Plumbing Heating Fire Protection Company's main corporate office by phone at

+1-773-489-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Great Lakes Plumbing Heating Fire Protection Company's official website and social media links?

Great Lakes Plumbing Heating Fire Protection Company's official website is glph.com and has social profiles on LinkedIn.

How much revenue does Great Lakes Plumbing Heating Fire Protection Company generate?

As of October 2026, Great Lakes Plumbing Heating Fire Protection Company's annual revenue is estimated to be $50M - $100M.

What is Great Lakes Plumbing Heating Fire Protection Company's NAICS code?

Great Lakes Plumbing Heating Fire Protection Company's NAICS code is 23 - Construction.

How many employees does Great Lakes Plumbing Heating Fire Protection Company have currently?

As of October 2026, Great Lakes Plumbing Heating Fire Protection Company has approximately 127 employees across 2 continents, including North America and Europe. Key team members include Chief Executive Officer: S. G. S., Vice President Mechanical: L. S. and President: D. T. Explore Great Lakes Plumbing Heating Fire Protection Company's employee directory with LeadIQ.

What industry does Great Lakes Plumbing Heating Fire Protection Company belong to?

Great Lakes Plumbing Heating Fire Protection Company operates in the Construction industry.

What technology does Great Lakes Plumbing Heating Fire Protection Company use?

Great Lakes Plumbing Heating Fire Protection Company's tech stack includes gstatic.com, RSS, WordPress, MySQL, Font Awesome, jQuery Migrate, PHP and Yoast SEO.

What is Great Lakes Plumbing Heating Fire Protection Company's email format?

Great Lakes Plumbing Heating Fire Protection Company's email format typically follows the pattern of FLast@glph.com. Find more Great Lakes Plumbing Heating Fire Protection Company email formats with LeadIQ.

When was Great Lakes Plumbing Heating Fire Protection Company founded?

Great Lakes Plumbing Heating Fire Protection Company was founded in 1946.

Great Lakes Plumbing Heating Fire Protection Company

ConstructionIllinois, United States51-200 Employees

Great Lakes Plumbing and Heating Company, founded in 1946, is a mid-sized mechanical contracting firm based in the Chicago region that provides plumbing, mechanical piping and fire protection design and installation. Headquartered in Westmont, Illinois, the company pursues complex retrofit and new construction projects, designing, engineering, fabricating and installing systems.

Its client base includes organizations seeking intricate heating, plumbing and fire protection solutions for existing-building projects. The firm emphasizes on-site collaboration, with engineers, CAD operators and purchasing staff frequently on site to help ensure projects meet design, budget and schedule. Over the years, Great Lakes has completed work on notable Chicago-area structures, reflecting its experience in the region's built environment.