What services does Black Diamond offer?

Black Diamond services air conditioning, heating, plumbing, and electrical equipment in McHenry, IL and surrounding areas. They also provide services such as duct cleaning and sealing, dryer vent cleaning, water treatment, and more.

What is Black Diamond's service area?

Black Diamond primarily serves the McHenry, IL and surrounding areas.

What financing options are available?

Black Diamond offers various financing options to help customers with their home and commercial HVAC, plumbing, and electrical needs.

What certifications or qualifications does Black Diamond have?

As the leading HVAC, plumbing, and electrical service provider in Illinois, Black Diamond employs highly trained and experienced technicians to ensure quality work and customer satisfaction.

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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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Black Diamond Plumbing & Mechanical

$8.0M revenue • 40 employees • 3548 35th St, Rockford, IL, 61109, United States

Last Updated Aug 21, 2026

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Company Overview

Company Name

Black Diamond Plumbing & Mechanical

Address

3548 35th St, Rockford, IL, 61109, United States

Website

blackdiamondtoday.com

Phone

(779) 207-3003

Approx. Annual Revenue

$8.0M

Employees

Established

2007

Google Reviews

3.8 (101 reviews)

Locations

About Black Diamond Plumbing & Mechanical

Black Diamond services air conditioning, heating, plumbing, and electrical equipment in McHenry, IL and surrounding areas. The company is located in Rockford, IL, United States and offers a range of services, including emergency HVAC, heating, plumbing, and electrical repair, as well as maintenance plans and installation.

Business Profile

Read from the Black Diamond Plumbing & Mechanical website on Oct 12, 2026. Hover an item to see the exact wording it came from.

How Black Diamond Plumbing & Mechanical works

Ownership (as declared by the business)

Locally owned

About the website

Website quality (AI-assessed): 8/10 · Current copyright 2026; Complete service and contact info

Recent changes

What changed on the Black Diamond Plumbing & Mechanical website and Google listing, as detected by Coldlytics on each visit.

Oct 15, 2026 · McHenry, IL
Google Business category is now HVAC contractor
Oct 14, 2026 · McHenry, IL
Google reviews went from 6,786 to 6,793
Oct 10, 2026 · Rockford, IL
Google rating went from 3.9 to 3.8

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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