Recent Jobs and Reviews
Job Locations and Reviews
Jack D.
Rinnai wall heater not working. After trouble shooting I found 2 of the 3 flame sensors were reading very low and would not keep the main gas valve on. I removed them and cleaned them. I tested their flame sensing current after and it was good. The unit would stay lit. As a courtesy, I vacuumed the unit while I had the panels off. I noticed the middle propane tank outside was on 0%.
Rochester, NH 03867
Jack D.
Baseboard loop in "mud room" froze and burst. The Tennant said that the room was always cold. We cut it out of the first floor heat loop and bypassed it. Thank you!
Concord, NH 03301
Jack D.
Replace all flue pipe for oil appliances. Test combustion on both pieces of equipment.
Belmont, NH 03220
Qwentin G.
Installed the new hot surface igniter for the Lennox furnace. I completed the plumbing maintenance today. I inspected all the fixtures and the drains and everything looked great. I labeled some emergency shut off tags. I drained down the Rheem tanked water heater. I didn't pull the anode rod because the water heater is only 4 months old. I made sure to turn the water heater back on and I let the client know that it would be hot again within an hour. Lastly I removed the kitchen sink aerator and made sure there was no air in the hot water pipes.
Merrimack, NH 03054
Jack D.
Repair leaking tub. It appears the seal of the drain has rotted out and needs to be repaired. The first attempt will be to apply new sealant and re-tighten the drain flange. This estimate includes this service. If this fails, the next attempt would be to replace the drain and that would be an additional task. Repair shower hot water issue. Based on our diagnosis, we recommend to replace in the two showers noted, the cartridge. A new cartridge will allow for correct temperature control to bring hot water temperatures back. Repair faucet aerator. We will install a new Kohler aerator in the sink as the old one appears to be stripped out on the threads. - No charge for this since it's only a $5 part.
Hooksett, NH 03106
Jack D.
Rinnai propane boiler not working. I found propane tank was empty. While here I found a gas leak at the boiler gas connection. I repaired it along with a few other loose fittings. Thank you!
Bedford, NH 03110
Jack D.
Perform maintenance on propane Viessmann boiler. Please see maintenance form for details of today's service. Thank you!
Merrimack, NH 03054
Adam P.
Water servo valve not functioning. Water from vent pipe dripping over controls. Water servo needs to be replaced. Vent pipe needs to be redone so it is pitching outwards. There are signs of corrosion from vent pipe not installed properly. Unit might have future issues or may not depending on rate of corrosion.
Nashua, NH 03064
Adam P.
Call was for carbon monoxide. The fire department was called in. They were measuring 130 to 150 parts per million CO. Pulled a coil out could not find crack and heat exchanger, did efficiency test found levels inside vent exhaust at 30 ppm gas pressure was at 3.5 inches. Ran furnace for a while with my carbon monoxide detector and dock and did not register any CL, thinking there’s a crack in the heat exchanger that opens up when it gets really hot. Tested vent pipes found leaks and vent pipes will have to run a new vent disconnected electrical and gas and condemned furnace not to be used.
Nashua, NH 03064
Review
We had a no heat issue. Qwentin diagnosed the problem and kept me informed of the process. He got the furnace running and told me what to watch for until the part comes in that will be the permanent fix.
Adam P.
Not hot water. Code 65. Found water dripping from unit. Noticed water dripping from combustion blower. Opened up cold water inlet screen. Screen was plugged , also a piece of rubber gasket inside. Replaced screen assembly with new one. Ran hot water on tub for 5 minutes,no codes. Looked into water dripping from combustion blower, I believe with the extreme cold air unit is bringing in and lack of correct pitch outward is causing issue. Maybe look into redoing vent to prevent future issues. Or maybe lifting unit up an inch. Also a flush for unit is needed
Nashua, NH 03064
Review
Arrived on time, organized equipment. Friendly, answered all my “many questions”. Adam made sure all the equipment was in working order. Excellent service.
Review
A+
Review
Always amazing service, every team member at GSMS has always been great and performed exceptionally great service.
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Excellent Service
Review
Very nice and personable person. Explained everything to me in a way I could understand
Review
I never thought I’d meet anyone as cool nice and kind as Mark but Jack was amazing. He took on the dirty job.. No problem He was super communicative and explained everything. I’m really grateful to have Granite State Mechanical on speed dial.
Review
Jack was once again on time, diagnosed the problem quickly and fixed it. All GSMS staff are courteous and extremely professional. I wouldn’t go with anyone else.
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Excellent work
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Great service!
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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