Your Trusted Heating, AC & Plumbing Experts in Nashua, NH
Since 1987, GSMS has been proud to offer top-notch HVAC 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. We provide a comprehensive range of HVAC services, including air conditioning repair, replacement, and maintenance, as well as heating services for furnaces and boilers. Our expert technicians are also skilled in installing and maintaining ductless mini-split systems, ensuring that your home stays comfortable year-round. At GSMS, we use only the highest quality products from leading manufacturers, guaranteeing efficient and long-lasting solutions for your HVAC 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 HVAC service in Nashua, NH, and experience the difference of working with trusted local professionals.
In addition to our heating and air conditioning services, we offer top-quality plumbing services to the residents of Nashua, NH. With over three decades of experience, our family-owned business has established a reputation for trust, reliability, and exceptional customer care. Our comprehensive 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. At GSMS, we use only the highest quality materials and the latest techniques to provide efficient and long-lasting solutions for your plumbing needs. Whether you require a quick repair, a complete installation, or regular maintenance, our team is committed to delivering personalized service tailored to your home’s unique requirements. Don’t let plumbing issues disrupt your daily routine—call GSMS today at 603-424-8258 to schedule your plumbing service in Nashua, NH, and experience the peace of mind that comes with working with trusted local professionals.
Recent Jobs and Reviews in Nashua, NH
Our Local Reviews by City
- Amherst, NH (1)
- Atkinson, NH (1)
- Auburn, NH (1)
- Barrington, NH (2)
- Bedford, NH (8)
- Goffstown, NH (1)
- Hollis, NH (2)
- Hooksett, NH (2)
- Hudson, NH (1)
- Lee, NH (1)
- Manchester, NH (6)
- Moultonborough, NH (1)
- Nashua, NH (5)
- Pembroke, NH (1)
- Raymond, NH (1)
- Rochester, NH (1)
- Stratham, NH (1)
- Weare, NH (3)
- Windham, NH (1)
Job Locations and Reviews
New relief valve, expansion tank, hy-vent, and auto fill valve with backflow prevention valve. Fill boiler with water + antifreeze and purge all heat zones.
Zero complaints. Service was prompt, complete, and clean. Role model performance by technician.
Your Lennox furnace maintenance went great. We checked everything according to the service manual. Thank you!
Kohler comfort height brush nickel handle. Replace the two toilets on the master bedroom bathroom and the first floor utility closet.
Clean flame sensor, check flame sensor reading, and program thermostat for your York furnace. Thank you!
Rough shower valve and remove vanity
Today I performed an oil maintenance in your System 2000 oil boiler. The expansion tank, hyvent, and relief valve need to be replaced. Everything else looked good on the system. Thank you!
I performed maintenance on a Burnham natural gas boiler in Nashua. The combustion analysis showed everything was within specifications. I checked the low water cutoff (LWCO), and it was functioning correctly. Gas pressures were also within the proper range. The boiler is operating efficiently, ensuring reliable performance for the heating system.
I inspected a steam boiler in Nashua, NH, to gather information for an upcoming tune-up. I checked the boiler's pressure and venting system and noted the condition of the burner and heat exchanger. I also took measurements to provide an accurate quote for replacing the system with a Rinnai high-efficiency boiler. The homeowner was informed of the options for upgrading to a more energy-efficient model and advised on potential savings. The next steps include pricing and scheduling the installation.
Furnace maintenance went great. We went through your York natural gas warm air furnace. We changed the air filter in your furnace as well as the humidifier pad on your aprilaire humidifier. See you next summer for your AC tune up!
Excellent service and such nice people to work with.
Many thanks for taking the time to share your feedback with us. We’re very happy to hear that we met your expectations!
Replace flapper
Great Organization!
Everything went great with the annual boiler maintenance/ cleaning on your Viessmann Boiler. We will order the target wall refractory under warranty and replace it next season as it looks good enough for one more heating season. While I was working on the boiler I smelt gas.. I investigated the smell further and found a small gas leak at the drier with with my electronic gas leak detector! I tightened the connection on the flexible gas supply connector and the leak was fixed. Thank you!
Remove old shower and prep drain for new shower. Scott will come in and remove sheet rock and build a wall. We will return back and install a shower and shower valve. Scott will return to complete finish; install sheetrock and paint. Shower door will be installed as final completion. Scott will work directly with client - his estimate to complete work will not exceed $2,000. This price is not reflected in our proposal.
So trustworthy, nice and incredibly talented in their field. Any plumbing, heating or cooling needs…do yourself a favor and call Zak, Mark and Jack at GSMS.
Use cutter on snake to clean roots from main out into sewer. I made 3 passes and definitely broke up some root clusters. Replace fill valve in second floor bathroom by stairs.
Old rubber coupling was cracked from age. I replaced it with a new one. Tested for leaks. All set.
Replaced shower & tub valve,removed bucket trap and replaced with p trap and atm vent,connected plumbing to kitchen sink
Gave estimate on new toilers
Installed a Rinnai RU199iN tankless water heater today for a customer in Nashua. Mounted the unit securely, connected the gas line using approved fittings, and installed the concentric venting for proper exhaust. Connected the cold and hot water lines with isolation valves for easy maintenance and tested for leaks. The system was then purged of air and tested for correct operation. Ensured that the MC-91-2 temperature control panel was functioning and calibrated for energy efficiency.
Charged the AC system with 4 pounds of R-22 refrigerant to restore proper cooling capacity. Also a leak sealant to the system to address any minor leaks in the refrigerant lines. Monitored the system pressures to ensure they stabilized within the recommended range. After the sealant was applied, the system was tested to confirm that it was now operating efficiently without leaks. This procedure should help maintain the system's performance throughout the cooling season.
Very grateful to have someone I can call who responds so quickly and is very fair and honest
Thank you for your kind words Kathleen! We're so grateful to have you a part of our GSMS family for so many years!
Snaked lav sink and toilet.Replaced flapper in second floor toilet and adjusted handle on master bedroom toilet
