Request Service Call Now Contact Us Coupons

Premier Heating, Air & Plumbing from a Family-Run New Hampshire Business

Heating Services
Cooling Services
Plumbing Services
Ductwork Services
We're Local. We're Family-Owned

HVAC Contractor & Plumber Services For Homes & Businesses

GSMS is your all-in-one destination for plumbing, heating, and cooling solutions in New Hampshire. We stand as a beacon of reliability, offering award-winning services rooted in family-owned traditions. With a commitment to your comfort and satisfaction, we bring 35+ years of experience to every project. We’re here to elevate essential systems of local homes and businesses.

×
Excellence Defines GSMS

Comprehensive, Expert Care for Every Room

Trusted Quality & Service
  • Best Of The Best
  • Expertise 2024
  • Lennox Premier Dealer
  • Mitsubishi Diamond Contractor
  • Rinnai
  • Ek Bhbsno Tagline
blue-background-with-white-line-point-n
Since 1987

Why Choose GSMS

icon_Family-Owned
Family Business You're supporting a local NH family with its second generation of ownership, not some big out-of-state corporation.
icon_WOW-Warranty
WOW Warranty We only install systems that meet our standards. That means we stand behind them with industry-leading labor warranties.
icon_smartmonitoring
GSMS Smart Monitoring Our unique sensors analyze your air and heating systems daily. This allows us to predict issues before they happen.
icon_welovelocal
Helping Our Community Through our "We Heart Local" initiative, we donate a portion of our profits every month to local NH organizations in need!
icon_Great-Service-Promise-Logo
Great Service Promise Affordable pricing, 5-star service, and pride in our work. If you're not satisfied, we'll make it right. It's how we've worked since 1987.
gsms-home-club-card-small@2x

Let's Make Home Enjoyable Again.

Total home protection, rewards, discounts, and smart monitoring. It’s all yours when you’re in the club.

Countless 5-Star Reviews

Great Service Makes For Great Reviews

Lisa Jobin
Lisa Jobin
21:14 11 Jun 25
Excellent service from Jack today!!
Zach White
Zach White
15:09 10 Jun 25
Very good service. Polite, attentive and considerate of my home.
Mark Cooke
Mark Cooke
13:40 10 Jun 25
Had an issue with our heat pump. Reached out for assistance and they had someone on site that afternoon. Problem was resolved quickly. Super friendly service. The tech was exceptionally friendly and an excellent communicator. Highly recommend
js_loader
Read More Reviews
gsms-van-cut-out-with-service-area

Serving New Hampshire

No matter where you call home in New Hampshire, GSMS is here to ensure it remains a haven of comfort throughout the seasons. We work all across NH to deliver great service exactly where you need it. Our Service Area
Trusted Quality & Service
  • Best Of The Best
  • Expertise 2024
  • Lennox Premier Dealer
  • Mitsubishi Diamond Contractor
  • Rinnai
Request Service
servicereturningdetailscustomer schedule
*
Have we served you in the past? (Required)
Yes
No
*
To Serve You Best
Details Regarding Your Request (Required)
*
Your Contact and Service Location (Required)
*
*
What Date Would You Like To Schedule Your Service?(Required)
*
What time of day is best for you? (Required)
First Available
Morning
Afternoon
*
By pressing Submit I agree to receive phone, email, or text messages from GSMS Air•Heating•Plumbing to the provided mobile number and also agree to the GSMS Air•Heating•Plumbing terms and privacy policy. Message & data rates may apply. Consent is not a condition of purchase. We will never share your personal information with third parties for marketing purposes.
Back Next