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 reviews exhibit a positive sentiment, with a majority of customers expressing satisfaction with the services provided by GSMS. The recurring themes include praise for the quality of work, professionalism, responsiveness, and excellent customer service. Customers also appreciate the technicians' expertise, friendliness, and the overall positive experience they had with GSMS. Negative reviews are minimal and focus on specific issues or misunderstandings, which were promptly addressed by GSMS. Overall, the reviews suggest that GSMS is a reliable and trustworthy company that delivers high-quality services to its customers.
Our Local Reviews by City
- Amherst, NH (5)
- Atkinson, NH (1)
- Auburn, NH (1)
- Barrington, NH (13)
- Bedford, NH (18)
- Candia, NH (2)
- Chester, NH (1)
- Concord, NH (5)
- Deerfield, NH (1)
- Derry, NH (2)
- Dover, NH (1)
- Durham, NH (1)
- Epping, NH (1)
- Gilford, NH (1)
- Gilmanton, NH (1)
- Goffstown, NH (4)
- Greenland, NH (1)
- Henniker, NH (3)
- Hillsborough, NH (1)
- Hollis, NH (11)
- Hooksett, NH (9)
- Hudson, NH (5)
- Lee, NH (1)
- Litchfield, NH (1)
- Londonderry, NH (11)
- Manchester, NH (35)
- Merrimack, NH (23)
- Milford, NH (5)
- Moultonborough, NH (1)
- Nashua, NH (28)
- New Boston, NH (3)
- Newbury, NH (1)
- Northfield, NH (1)
- Northwood, NH (1)
- Pembroke, NH (1)
- Raymond, NH (1)
- Rochester, NH (2)
- Salem, NH (3)
- Sandown, NH (2)
- Stratham, NH (2)
- Tilton, NH (1)
- Weare, NH (5)
- Windham, NH (6)
Job Locations and Reviews

Check charge added one pound of r22.condenser coils need to be cleaned.will make appointment to come back and wash a/c coils.changed filters in hall way

Did pm on Phil’s office unit,phone store,liberty tax,barber shop and avard.
We were without hot water when a very old heater stopped working. Mark installed a new hot water heater and brought the old plumbing up to current code.
Waiting for completion of project

Replaced electric hot water heater

Replace blower motor capacitor. Gina will reachout to schedule an estimate for system replacement. Thank you!

Damper motor bad won't close all the way.I ordered new one

Replaced mixing valve and installed expansion tank

Installed pressure reducing valve
Extremely knowledgeable, polite and an excellent craftsman.

Snake tub drain,Replaced trip lever trim and did pm on mini spilts

Pm on a/c unit change pure filter and lites

Install new outside faucets. 12" frost free. Isolation valve inside.
Let a vmail message to make sure Jack feels appreciation. He's thorough, explains what he's doing/fixing. Its nice to know I can count on him. Thank you!
It is always nice to see Jack! Super friendly, polite and explains what needs to be done.
Service Excellent
New to the company. Professional scheduling and arrival for scheduled appointments.
Excellent service as Ive always had from GSMS. I appreciate Jack's quick response and fix on a beautiful Friday spring afternoon!
Mark is so awesome!! He can solve any problem
We count ourselves lucky for customers like you and look forward to working with you again in the future!
Excellent service
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!