Recent Jobs and Reviews
Job Locations and Reviews
Qwentin G.
Water heater isn't keeping up. Client wanted the water heater replaced.
Manchester, NH 03102
Mark D.
Replaced fill valve on toilet
Newmarket, NH 03857
Jack D.
Replace toilet. Cutout old iron flange and add stainless steel flange. Replace Kohler canister gasket. Measure shower for replacement.
Hollis, NH 03049
Qwentin G.
I started off with doing the maintenance on the Rinnai floor heater. I vacuumed the air filters. I vacuumed out the whole inside of the unit and the blower wheels. I checked all the electrical connections and everything looked good. I checked all the vent pipe connections for carbon monoxide leaks and there was none. I used an electronic sniffer on the gas lines and there is no leaks as well. The bathroom fan was extremely dirty so there was poor air flow. I took it all apart and cleaned it. It was a night and day difference with the amount of suction now. Lastly I took a look at the water heater and the date says it was manufactured in September of 2005. There is a water filter that filters the water before the tank and it is extremely dirty. I would highly recommend replacing the tank due to the age because if that tank was to fail there would be 40 plus gallons of water all over the floor and the ceiling below.
Manchester, NH 03101
Mark D.
Install bath rm fan
Nashua, NH 03064
Jack D.
To permanently resolve the leak and ensure safe, consistent water temperatures, we recommend a complete internal rebuild of the shower valve using genuine OEM Kohler replacement parts. We do not recommend a "partial" repair, as disturbing the old, hardened O-rings on the secondary components will likely cause new leaks behind the finished wall.
Manchester, NH 03102
Adam P.
Project Overview During our recent service visit, Jack, noted significant scale buildup and active corrosion on several internal valves and fittings within your 11-year-old Rinnai tankless water heater. Given the age of the unit (originally installed during the home's construction) and the cost of rebuilding these internal components, we strongly recommend proactively replacing the unit. Upgrading now prevents a sudden failure and provides you with a brand-new system, full factory warranties, and renewed efficiency. Scope of Work 1. Equipment Removal & Installation Removal: Safely drain, disconnect, and remove the existing 11-year-old Rinnai tankless water heater. Installation: Supply and mount a new, high-efficiency Rinnai Tankless Water Heater in the existing location. Connections: Install new hot and cold water isolation valves (required for future maintenance and flushing) and reconnect to the existing gas and water lines. 2. Recirculation System Integration: Your home is a
Windham, NH 03087
Qwentin G.
Found a huge crack in the bottom of the indirect water tank. The supply valve is shut. I also found that the domestic water expansion tank has failed. The water tank is from 1998. I will send over an estimate to replace the hot water tank and the expansion tank. I would also recommend a maintenance to be done on the boiler if it hasn't been done recently.
Hooksett, NH 03106
Jack D.
I reccomend replacing water tank due to high TDS on hit water, yellow color, and anode rod being completely gone.
Manchester, NH 03102
Jack D.
Replace anode rod. Cut out corroded fitting and replace. Check for leaks and purge air from hot water lines. Thank you!
Amherst, NH 03031
Review
It’s always a pleasure when Qwentin stops by; a polite and personable young man who is an asset to the formidable GSMS team who did another super, duper jobby! 😉 Hope he had a great time at the party celebrating multiple birthdays this weekend?! Cheers 👍🙂🥃🥃
Review
Adam & Quinn just left after finishing the installation of my new Lennox Air Conditioning unit. As always, they are very personable and professional. Adam explains everything to me before he leaves and I am very comfortable with my new system. I would not hesitate to recommend GSMS and have done so in the past.
Review
Qwentin was thorough and diagnosed the issue
Review
Great service
Review
Excellent Service
Review
Excellent service and communication. A great family business.
Review
Quentin gave me all the information I requested and was exceptionally polite and did a through job. I highly recommend him and GSMS company !
Review
We use GSMS for all our bathroom remodels! Mark, Jack and Zak have been awesome to work with.
Review
Excellent service.
Review
Amazing service as usual!!!
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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