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Atkinson, NH

Your Trusted Heating, AC & Plumbing Experts in Atkinson, NH

If your home comfort system is acting up or you are dealing with a plumbing issue, GSMS is here to help. We provide reliable HVAC and plumbing services for homeowners across Atkinson, NH, with fast response times, honest recommendations, and expert workmanship backed by decades of experience.

Call today 603-424-8258 or visit our contact us page to schedule your service.

Keeping Atkinson Homes Warm All Winter

Winters in Atkinson can be long and cold. Our licensed technicians keep your home warm with reliable heating repair, installation, and maintenance services. We work on all furnace and boiler makes and models and offer trusted Lennox heating systems when you are ready for an upgrade.

Our heating services include:

  • Furnace repair, installation, and seasonal maintenance
  • Boiler installation and replacement
  • Emergency heating service
  • Heat pump troubleshooting and installation
  • Annual system tune and safety inspection

Each service is designed to improve efficiency, prevent breakdowns, and keep your home comfortable through every New Hampshire winter.

Cooling Comfort When New Hampshire Heats Up

Warm summer days are easier to enjoy when your AC is running well. GSMS offers complete cooling services that restore comfort quickly and extend the lifespan of your system.

We provide:

  • AC repair for all brands
  • AC installation and replacement
  • Routine cooling maintenance
  • Heat pump cooling support
  • High-efficiency Lennox system upgrades

We find the source of problems such as warm air, short cycling, drainage issues, or increasing energy bills and offer solutions that fit your home and budget.

Plumbing Repairs That Keep Your Home Running Smoothly

From minor leaks to major repairs, our plumbers deliver dependable service with attention to detail. We understand how stressful plumbing issues can be, so we arrive prepared to complete most repairs during the same visit.

Our plumbing services include:

  • Pipe and fixture repair
  • Water heater repair and replacement
  • Drain cleaning
  • Garbage disposal repair and installation
  • Toilet repair and replacement
  • Kitchen and bathroom plumbing
  • Emergency plumbing calls

We only use high-quality materials and industry best practices to ensure long-lasting results.

Water Heater Repair and Replacement

Water heater problems are one of the most common service requests in Atkinson. Cold showers, inconsistent temperatures, unusual noises, or rising energy bills often signal a failing unit.

Our team diagnoses water heater issues quickly and explains whether a repair or full replacement is the better long-term option. We service both traditional tank water heaters and energy-efficient tankless units. When replacement is needed, we help you choose the right size and type for your household needs, ensuring reliable hot water and improved efficiency.

Indoor Air Quality Solutions

Healthy indoor air is essential for comfort. We offer a range of IAQ products and services that remove allergens, odors, and airborne contaminants.

Our IAQ services include:

  • Whole-home humidifiers and dehumidifiers
  • Air purification systems
  • High efficiency filtration upgrades
  • Duct cleaning and duct repair
  • Ventilation improvements

We evaluate your air quality concerns and recommend solutions that keep your home cleaner and healthier year-round.

Why Atkinson Homeowners Trust GSMS

GSMS is proud to be a trusted, family-owned business serving Atkinson and the surrounding New Hampshire communities. Homeowners choose us because we provide reliable service, honest guidance, and workmanship that stands the test of time.

What sets us apart:

  • Family-owned and operated with strong community roots
  • Local Lennox dealer offering top-rated heating and cooling systems
  • Fully licensed HVAC and plumbing technicians
  • Fast response times and clear communication
  • Quality solutions designed for long-lasting comfort
  • Commitment to integrity and exceptional customer service

Your comfort and peace of mind always come first.

Schedule Your HVAC or Plumbing Service in Atkinson, NH

GSMS is ready to help with any heating, cooling, or plumbing needs your home may have. Whether you are dealing with an urgent repair or planning ahead with preventive maintenance, our team delivers dependable service every time.

Call today 603-424-8258 or visit our contact us page to schedule your appointment.

Recent Jobs and Reviews in Atkinson, NH

Rated 5.0 out of 5 stars based on 2 customer reviews

Customers say: The recent reviews exhibit a predominantly positive sentiment, with recurring themes of satisfaction, professionalism, and expertise. Customers express gratitude, recommend the company, and acknowledge the quality of the work performed. Positive reviews frequently mention friendly and knowledgeable technicians, timely responses, and efficient service. Negative reviews are minimal and do not represent a clear, recurring trend. Overall, the reviews suggest a positive experience with the company, with many customers expressing satisfaction with their HVAC and plumbing needs.

Job Locations and Reviews

Jack D.
Jack D. Checked in
Annual maintenance on your Energy Kinetics Fronteir oil boiler. I completed the maintenance according to the manufacturer instructions. Everything went great. There are no necessary repairs.
Atkinson, NH 03811
Review
Excellent Service
Josh - Atkinson, NH 03811
Jack D.
Jack D. Checked in
Over charged system. Remove 1 pound. Liquid pressure fluctuating. System appears to have non condensibles. TXV valve is hunting. I reccomend recovering all refrigerant, replacing liquid line drier and refilling with new refrigerant. Thank you!
Atkinson, NH 03811
Mark D.
Mark D. Checked in
Check bath rm fans
Atkinson, NH 03811
Mark D.
Mark D. Checked in
Pm on boiler
Atkinson, NH 03811
Review
Qwentin represents GSMS very well. He was very pleasant, focused and knowledgeable.
Kathy - Atkinson, NH 03811
Qwentin G.
Qwentin G. Checked in
I started off with cleaning the outdoor unit. I rinsed the coil from the inside out with water. I cleaned the outside of the unit with soap and water. I checked all electrical connections and everything looked good. Then I went inside and I cleaned both indoor heads with soap and water. I cleaned the filters as well with Dawn soap and water. The system operating pressures looked good. I noticed both indoor blower wheels were very dirty so I recommended to the client to have them deep cleaned.
Atkinson, NH 03811
Trusted Quality & Service