Your Trusted Plumbing, Heating and Air Experts in Nashua, NH
Since 1987, GSMS has been proud to offer top-notch HVAC and plumbing services to residents of Nashua, NH. With over three decades of experience, our family-owned business has built a reputation for excellence, reliability, and outstanding customer service.
Need AC repair, a local plumber or better indoor air quality for your home? Call 603-424-8258 to schedule your HVAC and plumber service or contact us online with any questions 24 hours a day.
Expert HVAC Service
We provide a comprehensive range of HVAC services, including air conditioning repair, replacement, and HVAC maintenance, as well as heating repair and installation services for furnaces and boilers. Our expert HVAC technicians are also skilled in installing and maintaining ductless mini-split systems, ensuring that your home stays comfortable year-round.
Heating and AC Repair and Replacement
At GSMS, we use only the highest quality products from leading manufacturers, guaranteeing efficient and long-lasting solutions for your heating and cooling needs. Whether you need a quick repair, a complete system installation, or regular maintenance, our team is dedicated to providing personalized service tailored to your specific requirements.
Don't let HVAC issues disrupt your comfort—call GSMS today at 603-424-8258 to schedule your AC repair or heating service in Nashua and experience the difference of working with trusted local professionals.
Local Plumbing Services
In addition to our heating and air conditioning services, we offer top-quality plumbing services to the residents of Nashua. With over three decades of experience, our family-owned business has established a reputation for trust, reliability, and exceptional customer care.
Water Heater Repair and Installation
Our local plumbing services include water heater repair, replacement, and maintenance for both tank and tankless models, ensuring your home has a consistent supply of hot water. We also specialize in kitchen plumbing, from faucet and sink installations to dishwasher and water line services.
In the bathroom, our expert plumbers handle everything from toilet and shower repairs to vanity plumbing and pipe replacement. We use only the highest quality materials and the latest techniques to provide efficient and long-lasting solutions for your plumbing needs.
Get the Best Plumbers
Don't let plumbing issues disrupt your daily routine—call GSMS today at 603-424-8258 to schedule your plumbing service in Nashua and experience the peace of mind that comes with working with trusted local professionals.
Don't belive us, see what your neighbors are saying about our HVAC and plumbing services below!
Recent Jobs and Reviews in Nashua, NH
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.
Our Local Reviews by City
- Amherst, NH (10)
- Atkinson, NH (2)
- Auburn, NH (1)
- Barrington, NH (22)
- Bedford, NH (27)
- Candia, NH (2)
- Chester, NH (2)
- Concord, NH (7)
- Deerfield, NH (1)
- Derry, NH (2)
- Dover, NH (1)
- Durham, NH (2)
- Epping, NH (1)
- Gilford, NH (1)
- Gilmanton, NH (1)
- Goffstown, NH (8)
- Greenland, NH (2)
- Hampstead, NH (2)
- Henniker, NH (3)
- Hillsborough, NH (1)
- Hollis, NH (13)
- Hooksett, NH (14)
- Hudson, NH (7)
- Lee, NH (1)
- Litchfield, NH (3)
- Londonderry, NH (13)
- Manchester, NH (55)
- Merrimack, NH (43)
- Milford, NH (7)
- Moultonborough, NH (1)
- Nashua, NH (50)
- New Boston, NH (4)
- Newbury, NH (1)
- Newmarket, NH (2)
- Northfield, NH (1)
- Northwood, NH (1)
- Pembroke, NH (1)
- Raymond, NH (1)
- Rochester, NH (2)
- Salem, NH (4)
- Sandown, NH (2)
- Stratham, NH (5)
- Tilton, NH (1)
- Weare, NH (5)
- Windham, NH (7)
- York, ME (1)
Job Locations and Reviews
I never thought I’d meet anyone as cool nice and kind as Mark but Jack was amazing. He took on the dirty job.. No problem He was super communicative and explained everything. I’m really grateful to have Granite State Mechanical on speed dial.
Large root blockage 38 feet out from basement cleanout. I remove roots and restored flow. I reccomend flushing root destroyer and having camera inspection and going from there.
Completed the water heater maintenance today. I flushed out the water from the water heater. I added in water and made sure it came out clear. I pulled the anode rod and wiped it down with a rag, it was in good condition. I completed the whole house plumbing inspection. I looked at the water lines, the drain lines and the fixtures. The only two things that I found was the master bedroom sink is starting to leak from the drain. The sink plug I wasn't able to get back in. Other than that everything look great. We will write up an estimate to make those two repairs and send it over to you by the end of this week.
Snake upstairs tub drain. Fix squealing sink by cleaning aerator. Complete furnace & water heater planned maintenance. Please see each maintenance form for details of todays servicing. Thank you!
Excellent service
Replacement of the existing heating and cooling system with a new high-efficiency and reliable Lennox heating and cooling system. The existing system will be removed. The outdoor unit will be placed in the same location, with a new lineset installed and the electrical circuit modified as needed for the new system. A new bypass humidifier will be installed, along with a new AirBear filtration unit to enhance indoor air quality. System venting will be redone to bring it up to current standards. The existing Nest thermostat will be used for system control.
Qwentin did the annual maintenance on our furnaces. He checked everything thoroughly via checklist and itemized was done.
We replaced the pump bracket assembly with a replacement that was found in the basement. There were a few issues encounter such as seized bolts and one that had to be drilled out and tapped. We were able to get it replaced and checked for operation. You're all set. The smaller boiler on unit 115 needs a new expansion tank and relief valve. The relief valve is dripping water and the expansion tank is water logged.
Whenever Mark is on the way, you know it’s gonna be fixed correctly. He is awesome!
Replaced kohler flapper
Determined there is another run off of the plenum that goes up to the second floor for his son's bedroom that we need to cut in a damper for. Then is flexible with timing we can plan on coming back worst case he can give us the garage code to get in. Also installed remote room air sensor for S40 system for the second floor.
Replacement of failed 80% gas furnace with a new Lennox 95%+ gas furnace. Installation of a Right Angle AirBear filtration system. **This is an estimated price and will be updated upon completion.**
As I was finishing up on the maintenance for the Lennox furnace, I found that the furnace was producing very high CO levels. I had to red tag the unit. I shut off the gas and the power to the furnace, red tagged it and took pictures and sent them over to you. The Lennox furnace was from 1970.
Completed the condensing gas boiler maintenance today. I started off with checking all electrical connections and everything looked good. I cleaned the heat exchanger with vinegar and flushed it with water. I cleaned and primed the trap. I cleaned the flame sensor. All the boiler accessories looked good. I ran the unit in high and low fire and performed a combustion analyzer test that checks the units CO, CO2 and oxygen levels and everything was according to manufacture specifications. The boiler was running great.
GSMS is a great Family owned Company to work with. I am very happy with my new Boiler heating system. Zak explained all my options and was prompt to call back with any questions I had. Adam, the lead Technician was outstanding with the installation. Gina was great coordinating the scheduling. Mark also came out for a final inspection. You can tell they take pride in their work! I would definitely recommend them.
Jack was prompt and did a great job tuning our furnace.
Did annual maintenance on the furnaces so we are all set for winter!
Did annual maintenance on the furnaces so we are all set for winter!
Great seeing Mark again.
Great service , personality and thorough
top notch service, always professional. would recommend to anyone needing HVAC service, repair or install.
It was a pleasure serving you and your family. Thank you for sharing your kind words with us. It means the world to us and to our entire team!
