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Concord, NH

Your Trusted Heating, AC & Plumbing Experts in Concord, NH

Since 1987, GSMS has been proud to offer top-notch HVAC services to residents of Concord, 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 Concord, 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 Concord, 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 Concord, NH, and experience the peace of mind that comes with working with trusted local professionals.

Recent Jobs and Reviews in Concord, NH

Rated 5.0 out of 5 stars based on 2 customer reviews

Job Locations and Reviews

Review
We’ve used GSMS for several years- three major projects at two different houses- and they’ve always been top notch! Great communication, reliability, and professionalism. We always recommend GSMS to anyone we know with HVAC needs.
Ashley - Concord, NH 03301
Adam P.
Adam P. Checked in
Replacement of existing system with our Lennox Signature Collection high-efficiency variable speed gas furnace and heat pump system to provide the most efficient and reliable heating and cooling. New venting installed. We will use one of the concentric vent holes and drill a new hole for our two pipe venting system. New Lennox Smart Zoning System with zone thermostats and new zone panel for control. We already replaced zone dampers and will keep those in place. Existing AirBear filtration system we installed will be modified to work with new system. System will be dropped down from the cinderblocks and put on our furnace footies. We will go through exposed ductwork and repair ripped insulation areas. Outdoor unit location will be moved to the side of the home due to heigh requirement with the current unit being under the deck. Line item to add another return register on the second floor in the primary bedroom area. Duct will drop down through the first floor closet, into the bas
Concord, NH 03301
Qwentin G.
Qwentin G. Checked in
I started off with washing the outdoor units coil with water. I then cleaned the outside of the unit with soap and water. I checked electrical connections and everything looked good. I went inside and I cleaned all three coils with hot water and Dawn soap. I cleaned the filters with Dawn soap as well. I ran the units on maximum heat and the temperatures looked good.
Concord, NH 03301
Adam P.
Adam P. Checked in
New high-efficiency Rinnai tankless water heater with our built-in recirculation technology will be installed in place of the existing low-efficiency model.
Concord, NH 03301
Review
GSMS is always professional and courteous. We always go to them with any plumbing and heating needs.
Ben - Concord, NH 03301
Mark D.
Mark D. Checked in
Bad expansion tank on booster pump
Concord, NH 03301
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