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Bedford, NH

HVAC and Plumbing Services for Bedford, NH Homes

When something goes wrong with the comfort systems in your home, you need a team you can trust. GSMS provides dependable heating, cooling, and plumbing services to families throughout Bedford, NH. Our technicians bring years of hands-on experience along with honest guidance and solutions that last.

Call today 603-424-8258 or visit our contact us page to schedule service.

Complete Heating Care for Bedford Homeowners

Cold nights in Bedford call for a heating system you can rely on. Our team services all furnace and boiler brands and offers high-quality Lennox heating equipment when it is time for an upgrade. We focus on reliable repairs and seasonal care that keeps your home warm and safe.

Heating services include:

  • Furnace and boiler repair
  • System replacement and installation
  • Heat pump services
  • Seasonal heating maintenance
  • Emergency heating assistance

Each appointment includes a thorough inspection so we can pinpoint issues before they become larger problems.

Fast and Reliable Furnace Repair

Furnace repair is one of the most common service requests from Bedford residents. When your furnace starts blowing cool air, cycling on and off, making loud noises, or causing your energy bill to rise, our technicians respond quickly to restore heat.

We diagnose airflow problems, ignition failures, sensor issues, thermostat concerns, and worn components with precision. Our goal is to repair your system safely and efficiently, extending the life of your furnace and keeping your home comfortable all winter.

If a repair is not the best long-term fix, we can help you choose a new Lennox furnace that improves comfort and reduces monthly energy costs.

Cooling Solutions That Keep Your Home Comfortable

Bedford summers can be warm and humid, so your AC system needs to run smoothly. We offer full-service cooling solutions that address everything from weak airflow to system breakdowns.

Our AC services include:

  • Air conditioning repair
  • AC installation and replacement
  • Annual cooling tune-ups
  • Heat pump cooling
  • High efficiency cooling upgrades

We diagnose refrigerant issues, drainage problems, frozen coils, and thermostat inconsistencies and explain the best options for your home.

Professional Plumbing Services for Bedford, NH

Plumbing problems can disrupt your day, which is why we provide fast and thorough service to get everything working again. Our licensed plumbers are trained to handle a wide variety of repairs and installations.

Plumbing services include:

  • Drain cleaning
  • Toilet and faucet repair
  • Water heater repair and replacement
  • Garbage disposal installation
  • Kitchen and bathroom plumbing
  • Emergency plumbing appointments

We use high-quality materials and proven methods to deliver durable results you can rely on.

Indoor Air Quality Improvements

Good indoor air quality helps protect your family’s health and keeps your home feeling fresh and comfortable. We offer solutions that filter airborne particles, reduce odors, and maintain balanced humidity levels.

Indoor air quality services include:

  • Air purifiers
  • Humidifiers and dehumidifiers
  • Filtration upgrades
  • Duct cleaning and repair
  • Ventilation improvements

We take time to understand your concerns and match you with products designed to create a cleaner environment.

Why Bedford, NH Trusts GSMS

GSMS is a family-owned company built on trust, craftsmanship, and customer care. We are proud to serve Bedford and the surrounding communities with dependable HVAC and plumbing solutions.

Homeowners choose us because:

  • We are family-owned with deep local values
  • We are an authorized Lennox dealer offering top-quality equipment
  • Our technicians are licensed, skilled, and trained for all home comfort needs
  • We provide honest guidance and transparent recommendations
  • We focus on long-term solutions that improve comfort and efficiency
  • Customer satisfaction is always our top priority

Schedule HVAC or Plumbing Service in Bedford, NH

Your home comfort is in good hands with GSMS. Whether you need a seasonal tune-up up a furnace repair, or a plumbing fix, our team is prepared to deliver fast, dependable service.

Call today 603-424-8258 or visit our contact us page to book your appointment.

Recent Jobs and Reviews in Bedford, NH

Rated 4.9 out of 5 stars based on 27 customer reviews

Customers say: The recent reviews exhibit a predominantly positive sentiment, with recurring themes of satisfaction, professionalism, and expertise. Customers express gratitude, recommend the company, and acknowledge the quality of the work performed. Positive reviews frequently mention friendly and knowledgeable technicians, timely responses, and efficient service. Negative reviews are minimal and do not represent a clear, recurring trend. Overall, the reviews suggest a positive experience with the company, with many customers expressing satisfaction with their HVAC and plumbing needs.

Job Locations and Reviews

Bedford, NH - Bad nozzle,replaced with new one
Mark D.
Mark D. Checked in
Bad nozzle,replaced with new one
Bedford, NH 03110
Did home club visit for gas furnace and boiler.Both check out fine.
Did home club visit for gas furnace and boiler.Both check out fine.
Mark D.
Mark D. Checked in
Did home club visit for gas furnace and boiler.Both check out fine.
Bedford, NH 03110
Mark D.
Mark D. Checked in
Replaced mixing valve
Bedford, NH 03110
Furnace maintenance went great today. We had to clean the burners to achieve a safe co.bustion reading. They need to be replaced. We will provide a quote for new burners and the silicone exhaust piece.
Furnace maintenance went great today. We had to clean the burners to achieve a safe co.bustion reading. They need to be replaced. We will provide a quote for new burners and the silicone exhaust piece.
Jack D.
Jack D. Checked in
Furnace maintenance went great today. We had to clean the burners to achieve a safe co.bustion reading. They need to be replaced. We will provide a quote for new burners and the silicone exhaust piece.
Bedford, NH 03110
Jack D.
Jack D. Checked in
Clean inlet screen, remove and inspect flush cartridge, reinstall cartridge, adjust actuator according to instructions, and test flush. Lever from handler is no longer slipping off of actuator linkage. Vacuumed up water in tank and flushed multiple times and there was no more water.
Bedford, NH 03110
Bedford, NH - Pm on oil boiler replaced nozzle,filter and strainer,check boiler water good
Mark D.
Mark D. Checked in
Pm on oil boiler replaced nozzle,filter and strainer,check boiler water good
Bedford, NH 03110
Bedford, NH - I completed the oil furnace maintenance today. I replace the oil filter, the pump strainer and the nozzle. I replaced the air filter with a 20 x 25 x 5 air bear filter. I checked the wiring connections and everything looked good. I pulled the cleanouts and I brush and vacuumed out the heat exchanger. Lastly I ran the furnace and I completed a combustion analyzing test. This checks for CO, CO2 and oxygen levels and everything was running great.
Qwentin G.
Qwentin G. Checked in
I completed the oil furnace maintenance today. I replace the oil filter, the pump strainer and the nozzle. I replaced the air filter with a 20 x 25 x 5 air bear filter. I checked the wiring connections and everything looked good. I pulled the cleanouts and I brush and vacuumed out the heat exchanger. Lastly I ran the furnace and I completed a combustion analyzing test. This checks for CO, CO2 and oxygen levels and everything was running great.
Bedford, NH 03110
Jack D.
Jack D. Checked in
Batteries in flood stop valve were low. It couldn't open back up when the valve was performing its programmed exercising. I replaced the batteries and cycled the valve a few times. I tested for hot water at fixtures and you are all set. Thank you!
Bedford, NH 03110
Qwentin G.
Qwentin G. Checked in
Completed the mini split maintenance today. I started off with cleaning the outdoor unit. I washed the coil from the inside out with water. I checked the electrical connections and everything looked good. I went inside and I cleaned all the indoor coils with coil cleaner. I cleaned the outside of the unit with a wet rag. I ran all units on maximum heat and they were blowing 117° air. Everything was running great.!
Bedford, NH 03110
I completed the gas furnace maintenance today. I started off with checking all the electrical connections and everything looked good. I pulled the flame sensor and I cleaned it. I flushed the trap and condensate pump with cleaner. I replaced the clients air filter that she supplied. I checked incoming and outgoing gas pressures and everything was according to manufacture specifications. Lastly, I ran the unit and performed a combustion analyzer test, to test CO, CO2 and oxygen levels and everything was running great!
I completed the gas furnace maintenance today. I started off with checking all the electrical connections and everything looked good. I pulled the flame sensor and I cleaned it. I flushed the trap and condensate pump with cleaner. I replaced the clients air filter that she supplied. I checked incoming and outgoing gas pressures and everything was according to manufacture specifications. Lastly, I ran the unit and performed a combustion analyzer test, to test CO, CO2 and oxygen levels and everything was running great!
Qwentin G.
Qwentin G. Checked in
I completed the gas furnace maintenance today. I started off with checking all the electrical connections and everything looked good. I pulled the flame sensor and I cleaned it. I flushed the trap and condensate pump with cleaner. I replaced the clients air filter that she supplied. I checked incoming and outgoing gas pressures and everything was according to manufacture specifications. Lastly, I ran the unit and performed a combustion analyzer test, to test CO, CO2 and oxygen levels and everything was running great!
Bedford, NH 03110
Qwentin G.
Qwentin G. Checked in
Completed the gas furnace maintenance today. I started off with cleaning the trap and condensate pump with cleaner. I pulled and cleaned the flame sensor. I checked the wiring connections and everything looked good. The client replaces his own filters. I replaced the humidifier pad and put the humidifier into winter mode. I checked incoming and outgoing gas pressures and everything was according to manufacture specifications. Ran the unit in high and low fire and performed a combustion analyzer test to check for CO, CO2 and oxygen levels and everything was according to manufacture specifications. The client noticed that their hot water recently started to get really hot. I found that the mixing valve was sticking. I ended up freeing it up and adjusting the water temperature to 122°F. I let the client know that if they notice their water temperature change again that we just need to replace the mixing valve.
Bedford, NH 03110
Replaced hot water heater
Replaced hot water heater
Mark D.
Mark D. Checked in
Replaced hot water heater
Bedford, NH 03110
Jack D.
Jack D. Checked in
Replace Lennox zone panel under labor and Part warranty Furnace maintenance all set! Thank you!
Bedford, NH 03110
Mark D.
Mark D. Checked in
Bad zone board order one under warranty.Will call when in
Bedford, NH 03110
Review
5 🌟 excellent knowledge of produce and very professional
Alison - Bedford, NH 03110
Completed the furnace maintenance today. The client replaced her own filter and I replaced the humidifier pad. Checked all the wiring connections, everything looked good. Cleaned the flame sensor. I checked incoming and outgoing gas pressures and everything was within manufacture specifications. I performed a combustion analyzer test to check for CO, CO2 and oxygen levels and everything was within manufacture specifications. Replaced the clients house sediment filter with her supplied filter. We noticed that her Rinnai had a code 63. I pulled out the inlet filter and it was dirty so I cleaned it. The code never came back on, but I told the client to keep an eye on it.
Completed the furnace maintenance today. The client replaced her own filter and I replaced the humidifier pad. Checked all the wiring connections, everything looked good. Cleaned the flame sensor. I checked incoming and outgoing gas pressures and everything was within manufacture specifications. I performed a combustion analyzer test to check for CO, CO2 and oxygen levels and everything was within manufacture specifications. Replaced the clients house sediment filter with her supplied filter. We noticed that her Rinnai had a code 63. I pulled out the inlet filter and it was dirty so I cleaned it. The code never came back on, but I told the client to keep an eye on it.
Qwentin G.
Qwentin G. Checked in
Completed the furnace maintenance today. The client replaced her own filter and I replaced the humidifier pad. Checked all the wiring connections, everything looked good. Cleaned the flame sensor. I checked incoming and outgoing gas pressures and everything was within manufacture specifications. I performed a combustion analyzer test to check for CO, CO2 and oxygen levels and everything was within manufacture specifications. Replaced the clients house sediment filter with her supplied filter. We noticed that her Rinnai had a code 63. I pulled out the inlet filter and it was dirty so I cleaned it. The code never came back on, but I told the client to keep an eye on it.
Bedford, NH 03110
Qwentin G.
Qwentin G. Checked in
Completed the tanked water heater maintenance.
Bedford, NH 03110
Mark D.
Mark D. Checked in
Installation of a comprehensive whole-house water treatment system designed to significantly improve your home's water quality. This proposal includes: Whole-House Acid Neutralizer System (WaterSoft): This system will be installed to raise your water's pH from its current slightly acidic level (6.77). Neutralizing the pH helps protect your home's plumbing (especially copper pipes) from corrosion and can contribute to a better overall feel for your skin and hair. All necessary plumbing connections, bypass valves, and system startup will be performed by our certified technicians. Important Note: This proposal focuses on whole-house treatment for general water quality improvement and specific contaminant reduction. A Point-of-Use (POU) Reverse Osmosis (RO) system for dedicated drinking water purification is not included in this estimate. This would be ideal to have installed for the ice maker line on the fridge, but that would need to be connected by an appliance technician due to the
Bedford, NH 03110
Jack D.
Jack D. Checked in
Today I completed a maintenance on your Lennox Signature Series propane furnace. Everything went great. I found the vent pipe was not glued in so I went ahead and glued it together. I replaced the Humidifier pad as well. The Rinnai tankless water heater maintenance went great as well. There were no necessary repairs found during today's visit.
Bedford, NH 03110
Jack D.
Jack D. Checked in
Replace toilet.
Bedford, NH 03110
Jack D.
Jack D. Checked in
Replace over tightened supply hoses for master bath sinks.
Bedford, NH 03110
Did flush and heat exchanger cleaning
Did flush and heat exchanger cleaning
Mark D.
Mark D. Checked in
Did flush and heat exchanger cleaning
Bedford, NH 03110
Bedford, NH - Boiler pm
Mark D.
Mark D. Checked in
Boiler pm
Bedford, NH 03110
Qwentin G.
Qwentin G. Checked in
Removed and cleaned blower wheel and cabinet. Cleaned the secondary heat exchanger as well. I replaced the air filter as well. I set up the smart AC kit in the main house.
Bedford, NH 03110
Review
Very professional and courteous!
Michelle - Bedford, NH 03110
Mark D.
Mark D. Checked in
Main Home: 3 AC'S, 3 Furnaces, 1 HRV, 1 Boiler, and 1 Tankless Water Heater. Guest Home: 1 Furnace, 1 AC, and 1 Tankless Water heater.need appointment to finish.Replace two more toilet shut offs valves, one in main house and one in guest house first floor bath rm.
Bedford, NH 03110
Qwentin G.
Qwentin G. Checked in
I fixed the vent pipe and added in a drain line to the air handlers drain. Next I went outside and I performed the maintenance on the outdoor unit. I cleaned the coil with water. Washed the outside of the unit as well. Last time I was here, I completed all the other maintenance and replaced the filter as well.
Bedford, NH 03110
Review
Excellent
Michelle - Bedford, NH 03110
Review
Provided great service, excellent communication and very pleasant to work with!
Jennifer - Bedford, NH 03110
Review
Service from GSMS was excellent, as usual. Qwentin did a great job and didn’t rush, even when working in the attic at 120 degrees! Thank you!
Mark - Bedford, NH 03110
Review
Great service
Jeff - Bedford, NH 03110
Review
Every time a great job
Ali - Bedford, NH 03110
Review
Excellent Service
Ed - Bedford, NH 03110
Review
I needed a new fan motor for my air conditioner. Jack replaced the motor and it ran for about 30 minutes and stoped. I called the company and explained what I had observed and they sent Mark out the next day to replace the motor and the same thing happened. They ordered a replacement motor from the air conditioner company, Mark installed it and problem was solved. This was all done very professionally and within a reasonable time period.Great company to deal with.
Ronald - Bedford, NH 03110
Review
Jack is a very knowledgeable technician. He serviced my AC unit and found the fan motor was on its way out. He showed me the problem with the motor and had a replacement on his truck. Jack is very friendly guy and does not hesitate to discuss what he is doing and why. When he was finished, I received a complete report on items he had tested or inspected. I am Pleased he will be handling my HVAC system. Gina was also very helpful in arraigning my appointment.
Ronald - Bedford, NH 03110
Review
Jack was very polite, knowledgeable and thorough in solving our AC problem.
John - Bedford, NH 03110
Review
We trust Mark explicitly.. it’s been the best service for many years He’s the best!
Sandra - Bedford, NH 03110
Response from GSMS Air•Heating•Plumbing:

Thank you so much for this 5-star review. We really appreciate you being a customer and helping to share the word about us. We’re here for you anytime.

Review
Fast response time, Jack provided a friendly professional service for my plumbing issue. Thank you
Joyce - Bedford, NH 03110
Response from GSMS Air•Heating•Plumbing:

We really appreciate you taking the time out to share your experience with us.

Review
Great service! Explains issues well. Thank you
Susan - Bedford, NH 03110
Response from GSMS Air•Heating•Plumbing:

Many thanks for taking the time to share your feedback with us. We’re very happy to hear that we met your expectations!

Review
Qwentin was on time, very friendly and professional. He was able to identify the issue, communicate it effectively, and then fix it. Highly recommend.
Phil Cutler - Bedford, NH 03110
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

Review
Mark is just an amazing person! So thorough with the work he delivers. And Gina was wonderful, as she walked me through the entire process! It is always a pleasure to do business with you. Thank you!
Jeannette - Bedford, NH 03110
Review
We have used GSMS for over twenty years and have found them to be highly responsive, dependable, fairly priced, and thorough. They always keep my home clean, wearing covers over their work boots. Their use of technology to track arrival time is very helpful. We recommend them highly.
Matthew - Bedford, NH 03110
Review
David DiNardo - Bedford, NH 03110
Response from GSMS Air•Heating•Plumbing:

Thank you for the 5 stars, David! We really appreciate you choosing GSMS and supporting our family-run team. If there’s ever anything more we can do for you, don’t hesitate to reach out. – Zak D., Second-Generation Owner

Review
Responsive on New Year’s Day!
Tom - Bedford, NH 03110
Response from GSMS Air•Heating•Plumbing:

We are so grateful for your kind words.

Review
Everyone I have interacted with is extremely knowledgeable and personable. Your team is clear in what would best serve your customers needs and we are very grateful.
Heather - Bedford, NH 03110
Review
Mark and his team have been great. I will miss the prompt and polite service and response to my many needs over the last year. I will leave your information for the new owner/s
Annette - Bedford, NH 03110
Review
Jack and his co-worker were polite, professional and efficient - as always.
Linda - Bedford, NH 03110
Response from GSMS Air•Heating•Plumbing:

Thank you Linda!! We're proud of our friendly team of Specialists.

Review
Great service and very informative with questions asked. Very professional and kind.
Jennifer - Bedford, NH 03110
Review
He was great and a super nice guy
Michael - Bedford, NH 03110
Review
Timely, experienced service
Annette - Bedford, NH 03110
Review
Efficient, friendly informative service
Annette - Bedford, NH 03110
Review
GSMS are always beey good to deal with. Organized, professional, and efficient.
Dan - Bedford, NH 03110
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