What services does John C. Flood provide?

John C. Flood offers a wide range of services, including plumbing, HVAC, and electrical services, serving customers in Northern Virginia, DC, and Maryland.

What types of plumbing services does John C. Flood offer?

John C. Flood's plumbing services include boiler installation and replacement, drain cleaning and repair, garbage disposal installation and repair, sewer line replacement and repair, sump pump services, and water heater installation and repair.

What HVAC services are available from John C. Flood?

John C. Flood's HVAC services include air conditioning installation and repair, furnace installation and repair, heat pump installation and repair, and indoor air quality services such as air purification, dehumidifier, and humidifier installation and repair.

Does John C. Flood offer electrical services?

Yes, John C. Flood provides a variety of electrical services, including electrical wiring, electrical panel and circuit breaker installation, EV home charger installation, indoor and outdoor lighting, and surge protector services.

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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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John C. Flood

$12.4M revenue • 51 employees • 4419 41st St, Brentwood, MD, 20722, United States

Last Updated Aug 21, 2026

Own this business? Claim & update this listing →

Company Overview

Company Name

John C. Flood

Address

4419 41st St, Brentwood, MD, 20722, United States

Website

johncflood.com

Phone

(301) 962-2319

Approx. Annual Revenue

$12.4M

Employees

Established

1996

Google Reviews

4.7 (503 reviews)

Google Business Category

HVAC contractor

Locations

About John C. Flood

John C. Flood is a company that provides plumbing, HVAC, and electrical services in Northern Virginia, Washington D.C., and Maryland. The company is located in Brentwood, Maryland and offers a range of services including boiler installation and repair, drain cleaning, water heater installation, and electrical wiring.

Recent changes

What changed on the John C. Flood website and Google listing, as detected by Coldlytics on each visit.

Nov 10, 2026 · Alexandria, VA
Google reviews went from 5,766 to 5,849
Nov 9, 2026 · Alexandria, VA
Google Business category is now Plumber
Nov 8, 2026 · Alexandria, VA
Google Business category is now Plumber
Nov 6, 2026 · Alexandria, VA
Google Business category is now Plumber
Nov 5, 2026 · Brentwood, MD
Google reviews went from 496 to 503
Nov 5, 2026 · Alexandria, VA
Google Business category is now Plumber
Nov 4, 2026 · Alexandria, VA
Google Business category is now Plumber
Nov 2, 2026 · Alexandria, VA
Google Business category is now Plumber
Nov 1, 2026 · Brentwood, MD
Google rating went from 4.8 to 4.7
Oct 30, 2026 · Alexandria, VA
Google Business category is now Plumber
Oct 15, 2026 · Alexandria, VA
Google Business category is now HVAC contractor
Oct 14, 2026 · Alexandria, VA
Google Business category is now Plumber
Oct 13, 2026 · Alexandria, VA
Google Business category is now HVAC contractor

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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John C. Flood locations

2 Google Business Profile listings.

Location	Google category	Reviews	Status
4419 41st St, Brentwood, MDprimary	HVAC contractor	4.7 (503)	Claimed
6430 General Green Way, Alexandria, VA	Plumber	4.8 (5,849)	Claimed

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Contact Research

People Search

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Integrations

John C. Flood

Company Overview

Company Name

Address

Website

Phone

Approx. Annual Revenue

Employees

Established

Google Reviews

Google Business Category

Locations

About John C. Flood

Recent changes

John C. Flood locations

Companies near Brentwood, MD

Frequently Asked Questions about John C. Flood

What services does John C. Flood provide?

What types of plumbing services does John C. Flood offer?

What HVAC services are available from John C. Flood?

Does John C. Flood offer electrical services?

Technologies Used

Social Profiles

Key Decision Makers