Insights

Long-standing NH contractor GSMS Air•Heating•Plumbing has operated in New Hampshire for over 35 years, indicating strong local market presence and established customer relationships, presenting opportunities for maintenance contracts, service plan upsells, and referrals.

Family-led growth Second-generation leadership (Zak and Jack) suggests continuity, trust-building potential with homeowners, and prospects for personalized outreach, loyalty programs, and expansion into bundled home comfort solutions.

Broad service mix Offering heating, cooling, and plumbing services positions GSMS to cross-sell seasonal HVAC checks, water heater replacements, and plumbing upgrades to existing customers, increasing ticket size per visit.

Mid-market revenue With estimated revenue in the $10M-$25M range and a small employee base, there may be opportunities to target commercial property managers and small businesses for preventive maintenance contracts and service agreements.

Tech-enabled operations Utilization of cloud and web tech (AWS, WordPress, Google Workspace, CRM-like tools) suggests potential to deploy digital marketing, remote diagnostics, and customer portals to improve lead capture, scheduling, and ongoing customer engagement.

Similar companies to GSMS Air•Heating•Plumbing

GSMS Air•Heating•Plumbing Tech Stack

GSMS Air•Heating•Plumbing uses 8 technology products and services including Amazon Web Services, Open Graph, WordPress, and more. Explore GSMS Air•Heating•Plumbing's tech stack below.

GSMS Air•Heating•Plumbing's Email Address Formats

GSMS Air•Heating•Plumbing uses at least 2 email formats:
GSMS Air•Heating•Plumbing Email FormatsExamplePercentage
First@gsmsnh.comJohn@gsmsnh.com
50%
First.Last@gsmsnh.comJohn.Doe@gsmsnh.com
50%

Frequently Asked Questions

What is GSMS Air•Heating•Plumbing's phone number?

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You can contact GSMS Air•Heating•Plumbing's main corporate office by phone at . 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 GSMS Air•Heating•Plumbing's official website and social media links?

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GSMS Air•Heating•Plumbing's official website is gsmsnh.com and has social profiles on LinkedIn.

How much revenue does GSMS Air•Heating•Plumbing generate?

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As of November 2026, GSMS Air•Heating•Plumbing's annual revenue is estimated to be $10M - $25M.

What is GSMS Air•Heating•Plumbing's NAICS code?

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GSMS Air•Heating•Plumbing's NAICS code is 81 - Other Services (except Public Administration).

How many employees does GSMS Air•Heating•Plumbing have currently?

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As of November 2026, GSMS Air•Heating•Plumbing has approximately 4 employees across 1 continents, including North America. Key team members include Director: J. P. Explore GSMS Air•Heating•Plumbing's employee directory with LeadIQ.

What industry does GSMS Air•Heating•Plumbing belong to?

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GSMS Air•Heating•Plumbing operates in the Consumer Services industry.

What technology does GSMS Air•Heating•Plumbing use?

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GSMS Air•Heating•Plumbing's tech stack includes Amazon Web Services, Open Graph, WordPress, MySQL, Google Workspace, Mailchimp, JSON-LD and RequireJS.

What is GSMS Air•Heating•Plumbing's email format?

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GSMS Air•Heating•Plumbing's email format typically follows the pattern of First@gsmsnh.com. Find more GSMS Air•Heating•Plumbing email formats with LeadIQ.

When was GSMS Air•Heating•Plumbing founded?

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GSMS Air•Heating•Plumbing was founded in 1987.
GSMS Air•Heating•Plumbing logo

GSMS Air•Heating•Plumbing

Consumer ServicesNew Hampshire, United States2-10 Employees

GSMS Air•Heating•Plumbing is a Manchester, New Hampshire-based provider of installation and service for heating, cooling, and plumbing systems. Founded in 1987 by Mark Downing and originally operating as Granite State Mechanical Services, the company serves homeowners and local businesses in New Hampshire, delivering on-site service through technicians referred to as Service Specialists.

Leadership has transitioned to a second generation, with Zak overseeing daily operations and customer interactions while Jack serves as Service Manager, leading the team that repairs and maintains advanced heating and cooling systems. The organization emphasizes ongoing training and education for its specialists to ensure knowledgeable, effective service across its core offerings.

Section iconCompany Overview

Phone number
Website
gsmsnh.com
NAICS Code
81 - Other Services (except Public Administration)
Founded
1987
Employees
2-10

Section iconFunding & Financials

  • $10M - $25M

    GSMS Air•Heating•Plumbing's revenue is estimated to be in the range of $10M - $25M

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