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 overall sentiment across these reviews is overwhelmingly positive, reflecting high levels of customer satisfaction and appreciation. Customers consistently express enthusiasm about the quality of service they received, with recurring praise for professionalism, expertise, and efficiency. A dominant theme throughout is the technical skill and knowledge demonstrated by the service team, with many reviewers highlighting how thoroughly problems were diagnosed and resolved. The interpersonal qualities of the technicians emerge as another strong positive trend, with customers frequently describing them as friendly, personable, pleasant, and respectful. Communication stands out as a particularly valued aspect, with reviewers appreciating clear explanations, patience in answering questions, and being kept informed throughout the service process. Timeliness and punctuality are consistently mentioned as strengths, alongside respect for customers' property and maintaining clean, orderly work practices. Many customers express strong loyalty and trust in the company, with several indicating they are repeat customers or plan to continue using the service. The tone is enthusiastic and grateful, with multiple reviewers offering strong recommendations and expressing genuine happiness with the results. Overall, these reviews paint a picture of a service provider that excels in both technical competence and customer care, creating consistently positive experiences that foster long-term customer relationships.
Our Local Reviews by City
- Amherst, NH (10)
- Atkinson, NH (2)
- Auburn, NH (3)
- Barrington, NH (23)
- Bedford, NH (36)
- Bow, NH (2)
- Candia, NH (3)
- Chester, NH (2)
- Concord, NH (11)
- Deerfield, NH (1)
- Derry, NH (3)
- Dover, NH (1)
- Durham, NH (2)
- Epping, NH (3)
- Exeter, NH (1)
- Gilford, NH (1)
- Gilmanton, NH (1)
- Goffstown, NH (9)
- Greenland, NH (2)
- Hampstead, NH (2)
- Hampton, NH (3)
- Henniker, NH (3)
- Hillsborough, NH (1)
- Hollis, NH (19)
- Hooksett, NH (21)
- Hudson, NH (8)
- Lee, NH (1)
- Litchfield, NH (3)
- Londonderry, NH (15)
- Madbury, NH (1)
- Manchester, NH (72)
- Merrimack, NH (66)
- Milford, NH (9)
- Moultonborough, NH (2)
- Nashua, NH (71)
- New Boston, NH (4)
- Newbury, NH (1)
- Newmarket, NH (3)
- Northfield, NH (1)
- Northwood, NH (2)
- Pembroke, NH (1)
- Raymond, NH (1)
- Rochester, NH (2)
- Salem, NH (4)
- Sandown, NH (3)
- Strafford, NH (1)
- Stratham, NH (11)
- Tilton, NH (1)
- Weare, NH (8)
- Windham, NH (10)
- York, ME (2)
Job Locations and Reviews
This proposal outlines the plumbing labor and materials required to add a functional utility sink setup to your basement utility boiler room. To avoid the massive mess, expense, and concrete jackhammering associated with traditional basement plumbing, we will utilize a premium macerator pump system. This advanced technology grinds and pumps the waste upward, allowing us to safely tie your new basement fixtures directly into the home's existing overhead main waste line. Scope of Work Waste Discharge: We will route a 1-inch PVC discharge line from the powerful macerator pump, running it up and tying it safely and securely into your home's main overhead waste line. 2. Utility Sink & Water Lines The Sink: We will supply and install a heavy-duty Mustee 20-inch utility sink, equipped with a reliable basic chrome faucet. Drainage: The utility sink will be piped to drain directly into the Saniflo macerator pump, utilizing the pump to efficiently eject the sink's greywater. Water Supply:
It is always great to see Jack! GSMS never disappoints.
The tubspout needs to be replaced due to the metal being corroded. The pits from corrosion do not allow the diverter gasket to seat fully.
Replaced the failed expansion tank and install a flood stop valve. Made sure there was no leaks and tested the operation of the floodstop valve. Everything went great.
Quentin was friendly, personable, knew his business, and professional. Answered all my questions. Made recommendations that made sense. Would use him and GSMS anytime
Completed the AC maintenance and the furnace maintenance today. Everything went great! Please see the attached maintenance forms. I will send over the estimate for the hot water heater repairs.
CALL BACK IS IN THE WORKS- THERMOSTAT IS BLACK - NO REPSOPONSE.
Found overflow switch off.Looks like air was blowing on it from door cover moved switch .
To provide highly efficient cooling and supplemental heating for your sunroom, we have engineered a dedicated single-zone Mitsubishi system. As we discussed, this system is perfectly sized to handle the summer cooling load while extending the usability of the room well into the cooler months. Performance Expectations Summer Cooling: This system is specifically sized to easily handle the heavy cooling load of the sunroom's Florida-style windows. Winter Heating Limitations: While this unit provides excellent, reliable heating during the fall, spring, and milder winter days, it is limited based on the room it's installed in (i.e. the windows). We do not guarantee its ability to maintain the room's temperature during the true, deep winter months. The outdoor temperature must remain above 20 to 30 degrees Fahrenheit for this system to effectively maintain the set temperature in this specific sunroom environment. This aligns perfectly with your goals for the space, but we want to ensure e
I found that the capacitor had failed in the outdoor unit. After replacing it I ran the unit and tested operating pressures. I could tell that the unit is getting low on refrigerant. The coil outside is extremely corroded. I recommend to the client to not put any more money into the unit and to replace it next year. I also told her to let us know if the unit isn't keeping up on a hot day and that we will have to come out and fill it up with R22 refrigerant.
Clean condenser. Check dual capacitor at condenser. Check refrigerant charge. Vacuum indoor unit. Clean indoor unit condensate drain and flush with cleaner into pump. Check indoor fan motor capacitor. Check operation of system at end of servicing. All set, thank you!
Replace toilet fill valve.
Great communication, timely responses, good service
Completed the AC maintenance today. I found that the capacitor was about to fail so I replaced it with a new one. Other than that the unit was running great. Please see the attached forms.
Worked with Jack before. He is always professional & does what he has to do to remedy our problem. He’s a great guy & the company should be proud of him.
As always very professional
Quentin is a very knowledgeable & professional representative of your company. You can take pride in having him as your representative.
Exceptional service
Qwentin did maintenance on multiple hot water tanks. All went well!
Jack was so knowledgeable and kind. Found the problem right awa
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!







