Recent Jobs and Reviews
Job Locations and Reviews
Adam P.
Replacement of the existing 80% gas-fired furnace with a new high-efficiency, 97% efficient, gas-fired direct-vent furnace. The venting to the chimney will be capped off. New venting, using 2" piping, will exit the front of the home by the basement window, as discussed, to provide both exhaust and fresh air for the new system. The existing copper gas line will be cut out and replaced with black iron piping back to the transition point. This new section of piping will be sized to meet the load requirements of the new furnace. A new Lennox S40 thermostat will be installed to provide precise comfort control, as well as air quality monitoring to activate the PureAir system as needed for clean air. A condensate drain line will be added and will drain through a neutralizer. A whole-home steam humidifier will be installed for the new furnace. This will require either 120V or 240V circuit installed by the client's electrician.
Barrington, NH 03825
Qwentin G.
I found that the heat exchanger has failed. My combustion analyzer read 3500 ppm of CO inside of the vent pipe. I believe the reason why it failed was because of improper ductwork sizing and air flow. I red tagged the unit. I shut the gas off at the line, turned the switch off on the gas valve and turned off power. We will reach out to the client about what we can do to resolve this issue.
Litchfield, NH 03052
Qwentin G.
I completed the oil boiler maintenance today. I replaced the oil filter, the pump strainer, the nozzle and the electrodes. I checked all the boiler accessories and everything looked great. I performed a smoke test and the boiler was zero smoke. I performed a draft test and that was within manufacture specifications. Lastly I performed a combustion analyzer test that checks the units CO, CO2 and oxygen levels and the boiler was running great. The client mentioned that one room on the first floor wasn’t heating and I found that the supply line had been cut previously.
Newmarket, NH 03857
Jack D.
I diagnosed a failed circulatory pump. I replaced it and checked for operation of all zones. Everything is back online. I also performed a system maintenance on the Energy Kinetics oil boiler and everything went great! Please see the maintenance sheet for details of servicing. Thank you!
Barrington, NH 03825
Mark D.
Install new faucet for second floor bathroom. Also replace shut-off valves with new quarter turn handles. Based only on assumption, shower cartridge needs to be replaced for second floor shower that is causing a slow drip. We will provide a full diagnosis before repairing. This price is based off of replacing only the shower cartridge. Lift and replace wax ring for toilet seal in the first floor bathroom.Installed 2 of customers toilet and replaced 3 supply valves
Hudson, NH 03051
Review
Arrived on time. Work was completed timely. Cleaned up afterwards. Very pleased with the service.
Jack D.
Replacement of failed 80% gas furnace with a new Lennox 95%+ gas furnace. Installation of a Right Angle AirBear filtration system. **This is an estimated price and will be updated upon completion.**
Nashua, NH 03064
Mark D.
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Manchester, NH 03102
Jack D.
Water heater replacement! Thank you!
Bedford, NH 03110
Mark D.
Replaced kitchen faucet and tighten both basket strainers.Fillex sinks up and checked for leaks
New Boston, NH 03070
Qwentin G.
As I was finishing up on the maintenance for the Lennox furnace, I found that the furnace was producing very high CO levels. I had to red tag the unit. I shut off the gas and the power to the furnace, red tagged it and took pictures and sent them over to you. The Lennox furnace was from 1970.
Nashua, NH 03064
Review
GSMS is a great Family owned Company to work with. I am very happy with my new Boiler heating system. Zak explained all my options and was prompt to call back with any questions I had. Adam, the lead Technician was outstanding with the installation. Gina was great coordinating the scheduling. Mark also came out for a final inspection. You can tell they take pride in their work! I would definitely recommend them.
Review
Jack was prompt and did a great job tuning our furnace.
Review
Very happy with the job done.
Review
Did annual maintenance on the furnaces so we are all set for winter!
Review
Did annual maintenance on the furnaces so we are all set for winter!
Review
Great seeing Mark again.
Review
As always, your guys are on time, polite, efficient and friendly. No worries when any of your crew is here, or at the office texting. Thank you GSMS. Susan
Review
Excellent service!
Review
Very happy with the service. Technician was great!!!!
Love dealing with this company. Their techs are always prompt, efficient and courteous. We've been happy to be their customer since 2010.
Response from GSMS Air•Heating•Plumbing:
Thank you so much for the kind words and for being part of the GSMS family since 2010! It means the world to us to have earned your trust over the years. I’m proud of our team for continuing to deliver the kind of service that keeps clients like you coming back. We truly appreciate your loyalty and support. – Zak D., Second-Generation Owner
Qwentin was on time, very friendly and professional. He was able to identify the issue, communicate it effectively, and then fix it. Highly recommend.
Response from GSMS Air•Heating•Plumbing:
Thank you so much for the kind words and for trusting GSMS to take care of your home. Qwentin is a rising star on our team, and it means a lot to hear that his professionalism and communication made a strong impression. As a local, family-run business, we’re grateful for your recommendation and honored to have earned your trust. – Zak D., Second-Generation Owner
Great water heater service. On time and professional l He gave me some helpful tips on other water related issues. Highly recommend GSMS.
Response from GSMS Air•Heating•Plumbing:
Thank you for the great review! I’m glad to hear our Specialist was able to get your water heater squared away and offer some extra tips while he was there. We always aim to go beyond just the repair, and I really appreciate you taking the time to share your experience. Thanks for choosing GSMS — it means a lot to our family and our team. – Zak D., Second-Generation Owner
top notch service, always professional. would recommend to anyone needing HVAC service, repair or install.
Response from GSMS Air•Heating•Plumbing:
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!
Had an issue with our heat pump. Reached out for assistance and they had someone on site that afternoon. Problem was resolved quickly. Super friendly service. The tech was exceptionally friendly and an excellent communicator. Highly recommend
Response from GSMS Air•Heating•Plumbing:
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!
Adam, Quin and Mark did a wonderful job installing my replacement oil boiler and oil tank. I have trusted GSM for 3 installs at my house because of their professionalism, workmanship, honesty, transparency and integrity for how they conduct their family business. Everyone who has worked at my house has always been informative, on time and respectful. I would recommend GSM to anyone who needs to have major plumbing or heating/cooling done in their home. Gina in customer service is the best at relaying information and gets back to you in a timely fashion. Zak is wonderful to work with and the entire team at GSM treats you with kindness. Thank you again for another wonderful experience because when it comes to your home it is one of the largest investments you will make in your life, and I trust GSM to be there for me in the future.
Response from GSMS Air•Heating•Plumbing:
We thank you for sharing your positive experience. It made our day.
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