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
Our Local Reviews by City
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Job Locations and Reviews
Replaced hot water heater
I started off with the indoor Mitsubishi air handler. I replaced the air bear filter with a new filter that the client supplied. Next I took off the panels and I cleaned the coil with Dawn soap and then I flushed the trap with cleaner. Lastly, I checked the electrical connections and everything looked good. Next I went outside and I washed the outdoor coil from the inside out with water. I checked electrical connections and everything looked good. The wireless thermostat was having trouble connecting to the unit when I powered on everything. I called into tech-support and checked a couple things with my meter. The Technician told me to unplugged the unit outside for 10 minutes and then turn it back on. I tried this and it didn’t work. The client mentioned that it could be the Kumo cloud that was acting up so I disconnected the cloud controller from the control board. I powered off the air handler from the breaker for 5 minutes. When the unit turned on the thermostat started working aga
The Lennox furnace maintenance went great today. It is in exceptional condition. There are no repairs to be noted of today.
We’ve been so happy with the products and service from GSMS! I absolutely recommend them!
Today we completed a maintenance on your Ideal natural gas boiler. Everything looks great. Thank you!
I came out to look for an exhaust smell. I smelt more of a sewage smell but the effected area was far from any drains. I actually ended up finding a dead mouse. Although I am almpst 100% certain this was the cause of the smell- I still checked every gas connection with an electronic detector and checked every exhaust fitting just to be safe of everything. Thank you!
The Veissmann natural gas boiler maintenance was completed today. Everything went well and there were no issues to be found. Thank you!
Adam install a heat pump system in our home, which required not just one but two complete systems with air exchange. From start to finish, Adam was courteous, professional, and an absolute pleasure to work with. He took the time to answer all our questions, ensured the installation process went smoothly, and worked with us every step of the way. The quality of his work was exceptional—everything was done meticulously, and the system is running perfectly. Adam’s attention to detail and dedication to doing the job right were clear throughout the project. We couldn’t be happier with the results
Conversion of existing failed steam system to a modern whole home comfort system to provide the first and second floors with forced air heating and cooling. To maximize efficiency and reduce fossil fuels, we will install a hybrid system (heat pump with back-up gas furnace) for the first floor. The second floor system will be a full electric system comprising of an air handler to service the main rooms and two mini-split heads to serve the back office off of the primary bedroom and the garage below it. Heat rises, so we can rely on the full electric system on the second floor versus having two hybrid systems. Existing steam boiler will be disconnected, removed, and recycled. Steam piping will also be removed from property to allow room for ductwork. *Based on no piping containing asbestos. Radiators will be client's responsibility to remove. First floor will have floor registers; supply and returns. Second floor will have ceiling registers; supply and returns. Each system will be cont
Removed tub drain,put new putty on it and reinstalled. caulked around tub and floor.Floor needs to be repaired
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.
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
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.
New high-efficiency Rinnai tankless water heater with our built-in recirculation technology will be installed in place of the existing low-efficiency model.
GSMS is always professional and courteous. We always go to them with any plumbing and heating needs.
Bad expansion tank on booster pump
