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Qwentin G.

Qwentin G.

Service Specialist

Rating

Reviews

Qwentin is a dedicated Service Specialist with 4 years in the HVAC industry and a year at GSMS. His hands-on background, honed through working on dirt bikes, drives his enthusiasm for tackling technical challenges and delivering exceptional service. Outside of work, Qwentin stays active by going to the gym and riding dirt bikes.

Qwentin values the supportive and collaborative environment at GSMS, which he considers the best workplace he’s ever experienced. Known for his light-hearted, fun-loving nature, Qwentin is committed to providing high-quality work and treating each client with the care and respect they deserve.

Name: Qwentin Gauvin

Recent Jobs and Reviews

Rated 5.0 out of 5 stars based on 129 customer reviews

Customers say: The overall sentiment across these reviews is overwhelmingly positive, reflecting high levels of customer satisfaction and appreciation. Customers consistently express enthusiasm about the quality of service they received, with recurring praise for professionalism, expertise, and efficiency. A dominant theme throughout is the technical skill and knowledge demonstrated by the service team, with many reviewers highlighting how thoroughly problems were diagnosed and resolved. The interpersonal qualities of the technicians emerge as another strong positive trend, with customers frequently describing them as friendly, personable, pleasant, and respectful. Communication stands out as a particularly valued aspect, with reviewers appreciating clear explanations, patience in answering questions, and being kept informed throughout the service process. Timeliness and punctuality are consistently mentioned as strengths, alongside respect for customers' property and maintaining clean, orderly work practices. Many customers express strong loyalty and trust in the company, with several indicating they are repeat customers or plan to continue using the service. The tone is enthusiastic and grateful, with multiple reviewers offering strong recommendations and expressing genuine happiness with the results. Overall, these reviews paint a picture of a service provider that excels in both technical competence and customer care, creating consistently positive experiences that foster long-term customer relationships.

At a glance

GSMS Air•Heating•Plumbing has completed 25 jobs between September 2026 and October 2026.

The 15 customer reviews shown here average 5.0 out of 5.

The most recent job was on October 8, 2026.

Recent work covers Merrimack, NH, Manchester, NH, Stratham, NH, Bedford, NH and Nashua, NH.

Job Locations and Reviews

Review
Qwentin provided excellent service today. He is a very professional and personable young man. Granite State is lucky to have him on their team.
Al - Bow, NH 03304
Completed the furnace maintenance today. Everything went great. I replaced the air filter and the humidifier pad. Please see the attached maintenance form.
Completed the furnace maintenance today. Everything went great. I replaced the air filter and the humidifier pad. Please see the attached maintenance form.
Qwentin G.
Qwentin G. Checked in
Completed the furnace maintenance today. Everything went great. I replaced the air filter and the humidifier pad. Please see the attached maintenance form.
Bow, NH 03304
Completed the gas furnace maintenance today. Everything went great. I replaced the inducer motor capacitor since it was failing. Please see the attached maintenance form.
Completed the gas furnace maintenance today. Everything went great. I replaced the inducer motor capacitor since it was failing. Please see the attached maintenance form.
Qwentin G.
Qwentin G. Checked in
Completed the gas furnace maintenance today. Everything went great. I replaced the inducer motor capacitor since it was failing. Please see the attached maintenance form.
Manchester, NH 03109
Completed the steam boiler maintenance today. Everything went great. It is ready for the winter!
Completed the steam boiler maintenance today. Everything went great. It is ready for the winter!
Qwentin G.
Qwentin G. Checked in
Completed the steam boiler maintenance today. Everything went great. It is ready for the winter!
Manchester, NH 03104
Replaced the failed expansion tank. Replaced the failed air vent. Replaced the leaking pressure relief valve. Replaced the failed temperature and pressure gauge. Replaced the failed autofill and replaced it with a autofill and backflow preventer combo. Purged all the air out of the system and made sure the returns came back hot. Right at the end I noticed that there was a good size crack in the flue pipe going into the chimney. I patched it up with furnace cement for now and told the client that we will be reaching out to get that replaced as soon as possible.
Replaced the failed expansion tank. Replaced the failed air vent. Replaced the leaking pressure relief valve. Replaced the failed temperature and pressure gauge. Replaced the failed autofill and replaced it with a autofill and backflow preventer combo. Purged all the air out of the system and made sure the returns came back hot. Right at the end I noticed that there was a good size crack in the flue pipe going into the chimney. I patched it up with furnace cement for now and told the client that we will be reaching out to get that replaced as soon as possible.
Qwentin G.
Qwentin G. Checked in
Replaced the failed expansion tank. Replaced the failed air vent. Replaced the leaking pressure relief valve. Replaced the failed temperature and pressure gauge. Replaced the failed autofill and replaced it with a autofill and backflow preventer combo. Purged all the air out of the system and made sure the returns came back hot. Right at the end I noticed that there was a good size crack in the flue pipe going into the chimney. I patched it up with furnace cement for now and told the client that we will be reaching out to get that replaced as soon as possible.
Manchester, NH 03109
Completed the gas boiler maintenance today. Everything went great! Please see the attached form.
Completed the gas boiler maintenance today. Everything went great! Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the gas boiler maintenance today. Everything went great! Please see the attached form.
Merrimack, NH 03054
Completed the furnace maintenance today. Everything went great! Please see the attached form.
Completed the furnace maintenance today. Everything went great! Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the furnace maintenance today. Everything went great! Please see the attached form.
Manchester, NH 03104
Completed the oil boiler maintenance today. Everything went great. The air vent was leaking water so I replaced it. Please see the attached form.
Completed the oil boiler maintenance today. Everything went great. The air vent was leaking water so I replaced it. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the oil boiler maintenance today. Everything went great. The air vent was leaking water so I replaced it. Please see the attached form.
Goffstown, NH 03045
Qwentin G.
Qwentin G. Checked in
Found that the expansion tank had failed. I replaced the expansion tank and the pressure relief valve. Made sure that the boiler PSI was set correctly. I turned on all the zones and made sure there was no air in the lines. All my returns came back hot.
Barrington, NH 03825
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Newmarket, NH 03857
Qwentin G.
Qwentin G. Checked in
Turned on the gas valve. Ran the furnace in heating. Everything was working as it should.
Nashua, NH 03064
Qwentin G.
Qwentin G. Checked in
I added in two check valves on both return zones. I tested all operations and everything is working as it should. I also tested the thermostat and that was working as it should as well.
Manchester, NH 03109
Hooksett, NH - Completed the furnace maintenance today. Everything went great. I replaced the air filter that the client supplied. I also replaced the humidifier pad and ensured that the humidifier was working.
Qwentin G.
Qwentin G. Checked in
Completed the furnace maintenance today. Everything went great. I replaced the air filter that the client supplied. I also replaced the humidifier pad and ensured that the humidifier was working.
Hooksett, NH 03106
Completed the gas furnace maintenance today. Everything went great. Please see the attached form.
Completed the gas furnace maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the gas furnace maintenance today. Everything went great. Please see the attached form.
Merrimack, NH 03054
Completed the gas furnace maintenance today. Everything went great. Please see the attached form.
Completed the gas furnace maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the gas furnace maintenance today. Everything went great. Please see the attached form.
Merrimack, NH 03054
Bedford, NH - Completed the plumbing maintenance today. Everything went great!
Qwentin G.
Qwentin G. Checked in
Completed the plumbing maintenance today. Everything went great!
Bedford, NH 03110
Review
On time, courteous, and efficient.
Tom - Merrimack, NH 03054
Completed the furnace maintenance today. Everything went great. Please see the attached form.
Completed the furnace maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the furnace maintenance today. Everything went great. Please see the attached form.
Merrimack, NH 03054
Review
Excellent
Raymond - Stratham, NH 03885
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Stratham, NH 03885
Review
Excellence
Raymond - Epping, NH 03042
Completed the gas furnace maintenance today. Everything went great! Please see the attached form.
Completed the gas furnace maintenance today. Everything went great! Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the gas furnace maintenance today. Everything went great! Please see the attached form.
Epping, NH 03042
Completed the furnace maintenances today. The upstairs unit had high CO levels. After pulling the whole unit apart and confirming with tech support, one of the pressure switch tubes and the collector box orifice was plugged with a bug. This made the gas valve not operate correctly causing a incomplete combustion flame. After putting it all back together I tested operation and everything is within manufacturer specifications. Please see the attached form.
Completed the furnace maintenances today. The upstairs unit had high CO levels. After pulling the whole unit apart and confirming with tech support, one of the pressure switch tubes and the collector box orifice was plugged with a bug. This made the gas valve not operate correctly causing a incomplete combustion flame. After putting it all back together I tested operation and everything is within manufacturer specifications. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the furnace maintenances today. The upstairs unit had high CO levels. After pulling the whole unit apart and confirming with tech support, one of the pressure switch tubes and the collector box orifice was plugged with a bug. This made the gas valve not operate correctly causing a incomplete combustion flame. After putting it all back together I tested operation and everything is within manufacturer specifications. Please see the attached form.
Windham, NH 03087
Completed the furnace maintenance today. Everything went great. Please see the attached form.
Completed the furnace maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the furnace maintenance today. Everything went great. Please see the attached form.
Merrimack, NH 03054
Completed the second plus third floor boiler maintenance. Everything went great. Please see the attached form.
Completed the second plus third floor boiler maintenance. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the second plus third floor boiler maintenance. Everything went great. Please see the attached form.
Nashua, NH 03064
Qwentin G.
Qwentin G. Checked in
Replaced the air vent and the inducer motor capacitor for apartment 1 boiler. Replaced the air vent, expansion tank and the inducer motor capacitor for apartment 2 and 3 boiler.
Nashua, NH 03064
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the oil boiler maintenance today. Everything went great. Please see the attached form.
Merrimack, NH 03054
Completed the gas furnace maintenance today. Everything went great! Please see the attached form.
Completed the gas furnace maintenance today. Everything went great! Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the gas furnace maintenance today. Everything went great! Please see the attached form.
Exeter, NH 03833
Review
Excellent!
Jeffrey - Stratham, NH 03885
Completed the oil furnace maintenance today. Everything went great. Please see the attached form.
Completed the oil furnace maintenance today. Everything went great. Please see the attached form.
Qwentin G.
Qwentin G. Checked in
Completed the oil furnace maintenance today. Everything went great. Please see the attached form.
Stratham, NH 03885
Review
Qwentin seemed knowledgeable, was very personable, efficient
Nancy - Stratham, NH 03885
Review
Always wonderful with Quentin
Bonnie - Bedford, NH 03110
Review
Overall it was a great experience. From getting the appointment to completion of maintenance, all was smooth.
Ali - Bedford, NH 03110
Review
Great team of technicians keeping my system running both summer and winter
John - Bedford, NH 03110
Review
Excellent service and very knowledgeable technician.
Michael - Amherst, NH 03031
Review
Great service and communication!
Steven - Hollis, NH 03049
Review
Excellent service and technical work
Phil - Windham, NH 03087
Review
Qwentin was knowledgeable, friendly, & got the job done quickly.
Kelly - Londonderry, NH 03053
Review
Excellent and professional
Shawn - Gilmanton, NH 03237
Review
Fast resolution
Eric - Exeter, NH 03833
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