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 (3)
- Atkinson, NH (1)
- Auburn, NH (1)
- Barrington, NH (7)
- Bedford, NH (11)
- Candia, NH (2)
- Chester, NH (1)
- Concord, NH (4)
- Derry, NH (1)
- Epping, NH (1)
- Goffstown, NH (2)
- Henniker, NH (1)
- Hillsborough, NH (1)
- Hollis, NH (6)
- Hooksett, NH (5)
- Hudson, NH (4)
- Lee, NH (1)
- Londonderry, NH (3)
- Manchester, NH (23)
- Merrimack, NH (8)
- Milford, NH (3)
- Moultonborough, NH (1)
- Nashua, NH (12)
- New Boston, NH (2)
- Northwood, NH (1)
- Pembroke, NH (1)
- Raymond, NH (1)
- Rochester, NH (2)
- Salem, NH (1)
- Sandown, NH (1)
- Stratham, NH (1)
- Weare, NH (3)
- Windham, NH (3)
Job Locations and Reviews
Replace hot water heater
Mark is the best! Always takes care of the issues thoroughly!
We are so grateful for your 5-star review. Thanks for sharing your rating with us and the community.
Meet inspector for gas inspection,connected generator and replaced expansion tank on hot water heater
Replacement of existing aged system with a modern GSMS comfort system consisting of a new A/C unit and gas furnace to provide the home with reliable heating and cooling. New furnace venting will penetrate the front exterior of the home. The existing chimney vent will be capped off and remain in place for the existing water heater. Condensate will be re-located to drain internally into the laundry drain. New basic programmable thermostat installed for system control.
Dirty thermocouple. Cleaned it and tested operation. Thank you!
Had a space heater that stopped working. Jack resolved the problem and got it working again.
Thank you for the wonderful review and for taking the time to share your feedback.
Repaired toilet,replaced expansion tank and relief valve
Troubleshooting boiler found bad pilot valve.Ordered from webb,also need to repair leak on 11/4 return line for second floor unit
No heat for the administrators offices. We found the inducer motor to be seized at the rooftop unit. Came back with a new motor, gasket and replaced it. Unit is running good now.
Light unit heater. Ensure it is operating safely. Thank you.
I started off with cleaning the Lennox outdoor mini split. I washed the coil with water from the inside out. I cleaned the outside of the unit with soap. I then went inside and I cleaned the indoor head with hot water and Dawn soap. The filter was very clean. I ran a temperature test and the air coming out was 105°. Everything looked perfect.
Maintenance performed on your Armstrong air nautral gas furnace. Everything was gone through and no repairs were found to be needed.
Maintenance performed on Teledyne Laars Mini-Therm boiler. I removed the burners and cleaned them. I inspectedthe heat exchanger and it showed no signs of leaks. The gas pressure and combustion readings were good. All of the boiler components looked good as well and do not need replacing. The only thing that needs to be replaced is the draft hood as it is heavily corroded.
I started off with cleaning the burner tubes. I then vacuumed out the burner box and vacuumed off the boiler as well. Next, I checked incoming and manifold natural gas pressures, everything look good. I performed a sniff test to make sure there was no gas leaks. Lastly, I looked over the boiler accessories. The relief valve looked good and operated properly. The expansion tank and high vent need to get replaced as well as the draft hood. The gas line has a grease pack valve and should be replaced at some point.
Maintenance performed on Teledyne Laars Mini-Therm boiler. I removed the burners and cleaned them. I inspectedthe heat exchanger and it showed no signs of leaks. The gas pressure and combustion readings were good. The expansion tank needs to be replaced. All of the other boiler components looked good do not need replacing.
Maintenance performed on Teledyne Laars Mini-Therm boiler. I removed the burners and cleaned them. I inspectedthe heat exchanger and it showed no signs of leaks. The gas pressure and combustion readings were good. The expansion tank is failed. We will provide an esitmate to replace that. All of the other boiler components looked good and do not need replacing.
I started off with cleaning the burner tubes. I then vacuumed out the burner box and vacuumed off the boiler as well. Next, I checked incoming and manifold natural gas pressures, everything look good. I performed a sniff test to make sure there was no gas leaks. Lastly, I looked over the boiler accessories. The expansion tank, high vent, relief valve all looked good and operated properly. The gas line has a grease pack valve and should be replaced at some point.
Great communication and service is always top notch.
Grease gas valve replacement.
We found the furnace condensate drain line to not be draining because of a loose seal causing the inducer to suck air through the drain line, creating a vacuum. We fixed the line and tested the drain and it is working. While we were here we noticed many code violations on the water heater. The vent is a major safety hazard and needs to be corrected. The gas line has no drip leg. The tank has no mixing valve. The gas line has an unapproved hanger.
Installed shower door
Replace expansion tank, two air vents, and relief valve.
Humidifier won’t work in heat pump cycle,needs price on steam humidifier.will look into some different models doesn’t have much rm.He we wire it
Installed vanity,Moen faucet ,drain and installed two new supply valves and supply lines.Will make appointment to move dishwasher in cabinet more.
The maintenance on your Lennox furnace for unit 42-C went great. There are no recommended repairs at this time. We will bring a replacement filter whe we come back to fix the vent on the other boiler.
The boiler maintenance on the system for 42-C went well. There are no recommend repairs at this time.
The boiler maintenance for the 42-1 boiler went well. The exhaust elbow fitting needs to be replaced.
The boiler maintenance for unit 42-B went good. There are no necessary repairs at this time. Thank you.
Great service as always!
I needed a new dryer vent duct installed thru the basement and angled properly exiting the building.
Great service with excellent and honest communication throughout the appointment.
We count ourselves lucky for customers like you and look forward to working with you again in the future!
Excellent service
Zero complaints. Service was prompt, complete, and clean. Role model performance by technician.
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!
Great Organization!
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.
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!
