
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
