Insights

Expanded service footprint Longstanding plumbing and HVAC provider servicing Montgomery, Bucks, Chester, and Delaware counties with a full-suite home services offering, presenting cross-sell opportunities across plumbing, heating, cooling, and drainage services.

Certification and training Technicians undergo ongoing NATE and manufacturer training, signaling strong capability to install and service advanced equipment; leverage this to pitch premium systems, warranty extensions, and smart-home integrations.

Quality and ethics Strong emphasis on ethical conduct and professional accountability through Nexstar Network and BBB membership, which can be used to build trust-based relationships with customers for higher-ticket upgrades and recurring service plans.

Tech-enabled sales Active tech stack including Sage Intacct, Power BI, HubSpot, and live chat indicates potential for data-driven outreach, targeted campaigns, and streamlined service scheduling to boost upsell and retention.

Growth signals Revenue bracket ($50M-$100M) and historical recognition as a top local provider suggest readiness for scalable service packages, maintenance plans, and bundled HVAC/plumbing offerings to capture adjacent market demand.

Similar companies to Donnelly's Plumbing, Cooling & Heating

Donnelly's Plumbing, Cooling & Heating Tech Stack

Donnelly's Plumbing, Cooling & Heating uses 8 technology products and services including UserWay, Sage Intacct, Amazon Advertising, and more. Explore Donnelly's Plumbing, Cooling & Heating's tech stack below.

Donnelly's Plumbing, Cooling & Heating's Email Address Formats

Donnelly's Plumbing, Cooling & Heating uses at least 2 email formats:
Donnelly's Plumbing, Cooling & Heating Email FormatsExamplePercentage
First@4donnellys.comJohn@4donnellys.com
71%
FLast@4donnellys.comJDoe@4donnellys.com
29%

Frequently Asked Questions

What is Donnelly's Plumbing, Cooling & Heating's official website and social media links?

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Donnelly's Plumbing, Cooling & Heating's official website is 4donnellys.com and has social profiles on LinkedIn.

How much revenue does Donnelly's Plumbing, Cooling & Heating generate?

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As of August 2026, Donnelly's Plumbing, Cooling & Heating's annual revenue is estimated to be $50M - $100M.

What is Donnelly's Plumbing, Cooling & Heating's SIC code and NAICS code?

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Donnelly's Plumbing, Cooling & Heating's SIC code is 7699 - Repair Shops and Related Services, Not Elsewhere Classified and NAICS code is 81 - Other Services (except Public Administration).

How many employees does Donnelly's Plumbing, Cooling & Heating have currently?

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As of August 2026, Donnelly's Plumbing, Cooling & Heating has approximately 30 employees across 2 continents, including North America and Europe. Key team members include Vice President: C. D., Director Of Operations: I. T. and Accounting Controller: S. M. Explore Donnelly's Plumbing, Cooling & Heating's employee directory with LeadIQ.

What industry does Donnelly's Plumbing, Cooling & Heating belong to?

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Donnelly's Plumbing, Cooling & Heating operates in the Consumer Services industry.

What technology does Donnelly's Plumbing, Cooling & Heating use?

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Donnelly's Plumbing, Cooling & Heating's tech stack includes UserWay, Sage Intacct, Amazon Advertising, Google Ads, Microsoft Advertising, Power BI, LiveChat and HubSpot.

What is Donnelly's Plumbing, Cooling & Heating's email format?

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Donnelly's Plumbing, Cooling & Heating's email format typically follows the pattern of First@4donnellys.com. Find more Donnelly's Plumbing, Cooling & Heating email formats with LeadIQ.

When was Donnelly's Plumbing, Cooling & Heating founded?

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Donnelly's Plumbing, Cooling & Heating was founded in 1972.
Donnelly's Plumbing, Cooling & Heating logo

Donnelly's Plumbing, Cooling & Heating

Consumer ServicesPennsylvania, United States11-50 Employees

Donnelly's Plumbing, Cooling & Heating is a mid-sized home-services provider based in Lansdale, Pennsylvania, serving residents across Montgomery, Bucks, Chester, and Delaware counties. Founded in 1972, the company began with plumbing services and later expanded to include heating and cooling, extending its work to drainage, well services, sump pumps, and water quality improvements. The organization emphasizes ongoing technician training and safety, with staff earning industry certifications and participating in manufacturer programs for new products. It adheres to a formal code of ethics and maintains memberships with professional groups and the Better Business Bureau.

Serving residential customers in the same counties, the company provides a full range of plumbing and HVAC services for installation, repair, and maintenance, along with related drain, well, and water-quality work. Based in Lansdale, it functions as a local, full-service provider within the Pennsylvania consumer-services landscape, supported by industry associations and the BBB to reflect its professional standards.

Section iconCompany Overview

SIC Code
7699 - Repair Shops and Related Services, Not Elsewhere Classified
NAICS Code
81 - Other Services (except Public Administration)
Founded
1972
Employees
11-50

Section iconFunding & Financials

  • $50M - $100M

    Donnelly's Plumbing, Cooling & Heating's revenue is estimated to be in the range of $50M - $100M

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