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 (28)
- 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 (15)
- Hooksett, NH (14)
- Hudson, NH (7)
- Lee, NH (1)
- Litchfield, NH (3)
- Londonderry, NH (14)
- Manchester, NH (59)
- Merrimack, NH (49)
- Milford, NH (8)
- Moultonborough, NH (1)
- Nashua, NH (56)
- 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 (6)
- Tilton, NH (1)
- Weare, NH (5)
- Windham, NH (7)
- York, ME (1)
Job Locations and Reviews
Full explanation of the work to be completed and suggestions for future services . Answered all my questions. Very professional and knowledgeable.
Completed the boiler maintenance today. I started off with checking all the wiring connections and everything looked good. Next I pulled the burner tubes and I cleaned them as well as the burner box. I also cleaned the igniter, it was dirty. The expansion tank is starting to fail and the hy-vent is leaking. We will send over an estimate to replace both of those. Next I checked incoming and outgoing gas pressure and everything was according to manufacture specifications. Lastly I ran the boiler and performed a combustion analyzer test that checks the units CO, CO2 and oxygen levels. The boiler was running great.
Both guys very helpful & solved the problem
We found that the fill valve was starting to fail. We replaced the fill valve and tested operation. No leaks and everything worked as it should.
Very knowledgeable & very helpful
Completed the plumbing inspection today all of the fixtures and drains looked good. The air lines looked good as well. The water heater is 15 years old so I did not perform a flush on it due to the age. Other than that the inspection went good today.
GSMS HomeClub Plumbing visit!
I completed the plumbing inspection today. I checked all the drains and fixtures and everything looked great. I labeled a few emergency shut offs and I showed the client where they were. There is no where for me to drain the water heater today so I told the client that we could do it in the spring/summertime when we come to do his mini-split maintenances.
Estimate Summary: Complete replacement of the existing failed heating and cooling system with our Lennox Signature Series. This system features fully Variable-Speed technology for both heating and cooling, providing the quietest operation and the most precise temperature and humidity control available. Heating & Cooling Equipment: We will remove the existing furnace and AC and install the Lennox Signature Variable-Speed Gas Furnace paired with the matching Variable-Speed Air Conditioner. The system will be controlled by the new Lennox S40 Smart Thermostat, which acts as the communication hub for the equipment. Indoor Air Quality & Accessories: We will install the Lennox PureAir Carbon Catalyst UV light system to actively clean the air and surface coils. We will replace the existing bypass humidifier with a brand new bypass humidifier. Due to the tight space constraints in the corner, we will retain a standard 1-inch filter rack configuration, as there is not enough clearance to adapt
Friendly and transparent. Explained all aspects of the service.
Possible crack heat exchanger,also combustion blower should be replaced
We had an issue with our furnace and called GSMS on recommendation from a friend. I called and spoke with Gina to schedule an appointment. (She is very pleasant with a great attitude!) A service specialist, named Qwentin, came out to assess the issue. Qwen is great! He spoke well and is quite knowledgeable. He explained the issue, proposed a solution and a provided quote to fix. Although he didn’t have the part, he indicated he would quickly leave, go get the part and come right back to install—- all in that same visit! Qwentin‘s customer service skills, along with everyone else I’ve spoken with at GSMS, are top-notch. Going forward, we will use GSMS for our Plumbing, Air, Heating needs.
Snake bath tub drain and resealed tub drain
Replace existing Rinnai due to failure of Servo but also due to delay in waiting for parts needed. New unit will be installed as a direct replacement. We will replace the CSST gas line with rigid black iron piping to bring up to our standard for a safe installation.
I found that the collector box gasket had failed. I replaced the collector box, collector box gasket and inducer gasket. After I assembled it I ran the unit and checked for leaks and there was none. Lastly I performed a combustion analyzer test that checks the units CO, CO2 and oxygen levels and the furnace was running great.
A+
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.
Excellent service
Qwentin did the annual maintenance on our furnaces. He checked everything thoroughly via checklist and itemized was done.
Whenever Mark is on the way, you know it’s gonna be fixed correctly. He is awesome!
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!
