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Contact Us

When you choose GSMS you're choosing our professional and friendly team. We wouldn't be where we are today if it wasn't for our team. An employee is one who is employed for wages or salary. A team member is one who belongs to a group of people involved in attempting to achieve a common goal. We’re a team at GSMS and our goal we aim to achieve is providing New Hampshire families and businesses with quality service from friendly specialist.

Get in Touch With Us

Phone: 603-424-8258

Text: 603-493-1199

Email: customercare@gsmsnh.com

Meet our Team
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Mark Downing

Owner, Sales & Service

 

 

EDUCATION:

University of Connecticut, 

HVAC & Refrigeration

 

LICENCES:

NH Master Plumbing License No: 3276

NH Gas Fitting License No: GFE0700459

Cheryl Downing

Comptroller & Bath Design

 

 

EDUCATION:

Notre Dame College, Design & Marketing

Zak Downing

Home Comfort Specialist & Marketing

 

 

EDUCATION:

University of New Hampshire, 

Business Management & Mech. Engineering

 

Lennox Industries, 

Home Comfort Product Specialist Training

 

 

 

Adam Phelps

Installation & Service Technician

 

 

EDUCATION:

Manchester Trades School, 

HVAC & Refrigeration

 

LICENCES:

NH Plumbing License No: 4407

NH Gas Fitting License No: GFE0700558

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Call The Service Specialists: 603-424-8258

©2019 Granite State Mechanical Services, LLC.  NH LIC#: MBE0003276

724 East Industrial Park Drive, Unit 16, Manchester, NH 03109

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