top of page
Zak_17.png
30+ Years   •   2nd Gen, Family Owned   •   Certified Techs   •   100% 5-Star Reviews

With Over 30-Years of Experience, We're Prepared.

Complete Home Care from Friendly People with Quality Products and Genuine Service.
System 2000 Dealer Icon.jpg

When it comes to repairing your plumbing issue, installing a new home comfort system, or scheduling maintenance, you want a skilled technician to perform the task.

No matter your home service need, our team is standing by and ready to add you to our family of customers. We're on a mission to provide genuine service and quality products from our team of friendly Service Specialists.

Our family owned business refers to our team of two technicians as "Service Specialists". This is because we've been working for over 30 years and never stop learning about new efficient home solutions to share with our customers. It's one of the reasons why we fix all your problems the first time, eliminating annoying and costly call-backs.

Schedule your appointment today, we can't wait for you to experience the GSMS Difference our customers have come to know and trust.

Fujitsu-Elite.png
logo.png
logo.jpg
rinnai-tankless-water-heater-logo.jpg
- Our Services We Proudly Perform -
Ductless Mini-Splits
  • Single-Zone & Multi-Zone

  • Ductless Installation

  • Mini-Split Maintenance

  • Mini-Split Service & Repair

Heat Pump
  • Hybrid Systems

  • Mini-Split Systems

  • Heat Pump Maintenance

  • Heat Pump Service & Repair

Nest
  • Nest Thermostat

  • Nest Outdoor Cameras

  • Nest Indoor Cameras

  • Nest Doorbell

  • Nest Secure Security System

Natural Gas & Propane
  • Appliance Hook-up

  • Gas outdoor hook-up

  • Stand-by generator hook-up

Water Heaters
  • Electric Water Heaters

  • Gas Water Heaters

  • Hybrid Water Heaters

  • Tankless Water Heaters

  • Water Heater Maintenance

  • Water Heater Service

Boiler Heating System
  • System 2000 Boiler

  • Gas Boilers

  • Oil Boilers

  • Boiler Maintenance

  • Boiler Service & Repair

rE+5CDqaR8SBIdkBw0lhgw.jpg
Central Air
  • Lennox A/C Systems

  • Central Air Maintenance

  • Central Air Service & Repair

Air Quality
  • Air Filtration

  • Air Purifiers

  • Humidifiers

  • Dehumidifiers

httH3uvXTeuft0v6OoRTRw.jpg
Furnace Heating System
  • Gas Furnaces

  • Oil Furnaces

  • Hybrid Furnaces

  • Furnace Maintenance

  • Furnace Service & Repair

07-9-18-2705.jpg
Plumbing Fixtures
  • Kitchen & Bathroom Faucets

  • Shower Heads & Valves

  • Body Sprays

  • Fixture Service & Repair

Toilets
  • Toilet Replacement

  • Toilet Installation

  • Toilet Rebuilding & Repair

We Turn Frowns Upside Round

😫  😁

Facebook

"Prompt polite service at a reasonable price. Good people to work with and I will call them again when I need service."

Facebook

"The GSMS team installed central AC in our home. Cannot say enough about the courteous, efficient and professional service that they provided. Highly recommend them!!"

Facebook

"Thank you GSMS for how friendly and professional you are! We love our new ac!"

Google

"One of, if not the best contracting services we've ever dealt with.  Mark, Zak, and Adam installed our new boiler.  They are exceptionally professional, meticulous in their work, and extremely courteous."

GSMS Learning Center

Let's make home easier, together.™
Here's what Zak has been talking about recently:
  • Facebook - White Circle
  • LinkedIn - White Circle
  • Twitter - White Circle
  • YouTube - White Circle
  • Pinterest - White Circle

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

bottom of page