Recent Jobs and Reviews
Job Locations and Reviews
Qwentin G.
Completed the gas furnace maintenance today. I started off with cleaning the flame sensor. I checked all the wiring connections and the capacitor and everything looks great. The air filter was clean, the client replaces his own filters. I flushed the trap and condensate pump with cleaner. I checked incoming gas pressure and that was according to manufacture specifications. Lastly, I ran the unit in low and high fire and performed a combustion analyzer test to check the CO, CO2 and oxygen levels. The furnace was running great.
Concord, NH 03303
Jack D.
Today I completed a preventative maintenance on your high efficiency York natural gas furnace as part of your GSMS HomeClub membership. Thank you for signing up today and choosing to trust us! Everything went great. Please see our attached maintenance sheet for details of todays service. I looked up your Ruud water heater warranty and it unfortunately expired in February of 2024. I will have sent an estimate to replace it with a new tank with a leak stop valve.
Nashua, NH 03064
Mark D.
Replacement of Empire gas wall furnace at pump house.
Barrington, NH 03825
Qwentin G.
Replaced the oil burner motor and coupling. Tested operation and the burner is nice and quiet.
Manchester, NH 03103
Jack D.
Oil furnace preventative maintenance. Everything looks great on your system. Please see the maintenance sheet for todays details of visit.
Merrimack, NH 03054
Review
Very happy with the job done.
Qwentin G.
I completed the gas furnace maintenance today. I started off with checking all electrical connections and everything looked good. I pulled and cleaned the flame sensor. I flushed the trap and condensate pump cleaner with cleaner. I vacuumed out the filter box and inside of the furnace. I replaced the air filter with a 20 x 25 x 5 air bear filter. I checked incoming and outgoing gas pressures and everything was according to manufacturer specifications. Lastly I ran the unit to check the CO, CO2 and oxygen levels and the furnace was running great.
Merrimack, NH 03054
Jack D.
I made some adjustments on the S40 to improve heating comfort in the home. Please let us know if you would like one more adjustment made. I made a middle ground adjustment to keep the unit efficient, while still being comfortable.
Nashua, NH 03064
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!
Qwentin G.
Completed the oil boiler maintenance today. I replaced the oil filter, the pump strainer and the nozzle. I pulled the clean out off of the boiler and I brushed and vacuumed out the heat exchanger. I tested the pump pressure and that was within manufacture specifications. I ran the unit and performed a smoke test and got zero smoke. I also performed a combustion analyzer test that checks the CO, CO2 and oxygen levels and the boiler was running great. I noticed that the target wall and the floor in the boiler are starting to fall apart. I’m adding a photo with the estimate and emailing it to the client.
Bedford, NH 03110
Jack D.
Replace zone valve head that was damaged from leaking valve. Replace leaking valve. While in attic i noticed water near air handler. I couldn't tell if it was from system or roof. The office will schedule for me to come back with the air filter and to diagnose further.
Dover, NH 03820
Mark D.
Replace tstat and fix low voltage wiring
Manchester, NH 03109
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!!!!
Review
Jack was awesome! Showed up for an emergency on a Sunday and was able to remedy the situation in no time! He took the time to explain everything throughout the process and was very thorough and efficient!
Review
Completed job in a timely fashion attention to detail would hire again
Review
👍
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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