Request Service Call Now Contact Us Coupons

Amherst, NH

Your Trusted Heating, AC & Plumbing Experts in Amherst, NH

Since 1987, GSMS has been proud to offer top-notch HVAC services to residents of Amherst, NH. With over three decades of experience, our family-owned business has built a reputation for excellence, reliability, and outstanding customer service. We provide a comprehensive range of HVAC services, including air conditioning repair, replacement, and maintenance, as well as heating services for furnaces and boilers. Our expert technicians are also skilled in installing and maintaining ductless mini-split systems, ensuring that your home stays comfortable year-round. At GSMS, we use only the highest quality products from leading manufacturers, guaranteeing efficient and long-lasting solutions for your HVAC needs. Whether you need a quick repair, a complete system installation, or regular maintenance, our team is dedicated to providing personalized service tailored to your specific requirements. Don’t let HVAC issues disrupt your comfort—call GSMS today at 603-424-8258 to schedule your HVAC service in Amherst, NH, and experience the difference of working with trusted local professionals.

In addition to our heating and air conditioning services, we offer top-quality plumbing services to the residents of Amherst, NH. With over three decades of experience, our family-owned business has established a reputation for trust, reliability, and exceptional customer care. Our comprehensive plumbing services include water heater repair, replacement, and maintenance for both tank and tankless models, ensuring your home has a consistent supply of hot water. We also specialize in kitchen plumbing, from faucet and sink installations to dishwasher and water line services. In the bathroom, our expert plumbers handle everything from toilet and shower repairs to vanity plumbing and pipe replacement. At GSMS, we use only the highest quality materials and the latest techniques to provide efficient and long-lasting solutions for your plumbing needs. Whether you require a quick repair, a complete installation, or regular maintenance, our team is committed to delivering personalized service tailored to your home’s unique requirements. Don’t let plumbing issues disrupt your daily routine—call GSMS today at 603-424-8258 to schedule your plumbing service in Amherst, NH, and experience the peace of mind that comes with working with trusted local professionals.

Recent Jobs and Reviews in Amherst, NH

Rated 5.0 out of 5 stars based on 3 customer reviews

Customers say: The provided content describes the overall sentiment of the reviews as positive. The reviewers consistently express satisfaction with the services provided by Granite State Mechanical Services (GSMS). They mention factors such as responsiveness, dependability, fair pricing, thoroughness, cleanliness, use of technology, and the quality of the work. Positive reviews highlight the friendliness, expertise, efficiency, and reliability of the technicians, as well as their integrity, honesty, and performance. Customers appreciate the prompt and effective resolution of issues, the professionalism, and the trust they have in the GSMS team. The positive reviews also mention the range of services offered, including plumbing, HVAC, and air quality testing, as well as the positive experiences with scheduling, communication, and the overall customer service. Overall, the sentiment expressed in the reviews is overwhelmingly positive, with customers expressing high levels of satisfaction and recommending GSMS to others.

Job Locations and Reviews

Qwentin G.
Qwentin G. Checked in
I found out that the zone dampener was being opened to the second floor when the first floor was calling for heat. The thermostat wires going through the wall to the upstairs thermostat were shorting out to each other creating a call when the first floor would turn on. I talked to the client and the only way to solve that is to use a Wireless thermostat. The client wanted to update all three of his thermostats as well. I performed a maintenance on both Lennox and Mitsubishi mini splits. I started with cleaning them both from the inside out with water. I cleaned the outside of the unit as well. Everything looked great. Inside I washed the air filters with Dawn soap and water. I cleaned the indoor coils as well with Dawn soap and water. All the mini splits were in very good condition.
Amherst, NH 03031
Mark D.
Mark D. Checked in
Replace check valves and corroded copper elbow fitting. Replaced sprinkler shut off valve
Amherst, NH 03031
Jack D.
Jack D. Checked in
Replace
Amherst, NH 03031
Jack D.
Jack D. Checked in
The upstairs bathroom under sink drain piping was back pitched towards the trap, I reccomend replacing the drain piping. The upstairs bathroom faucet has an aerator cap that leaks. I tried tightening it but the threads are no good on it. The upstairs bathroom tub spout diverter doesn't seal and the shower valve cartridge does not seem to seal when in the off position. The basement bathroom toilet is wobbly, I tried tightening the flange nuts but they are plastic and will not tighten enough. The basement bathroom sink drains very slowly due to not having a vent.
Amherst, NH 03031
Mark D.
Mark D. Checked in
Removed shower drain,recaulked drain and installed
Amherst, NH 03031
Jack D.
Jack D. Checked in
I replaced the expansion tank and relief valve which had both failed. I diagnosed the humidifier that was not working. The flow restrictor was clogged. I replaced the humidifier pad as well. I resent the estimate to replace the check valve for the basement heat loop. I also will get back to you in regards to the third zone above the garage once I talked to the install team and system replacement designer. Thank you.
Amherst, NH 03031
Mark D.
Mark D. Checked in
Run new 2” pvc line to existing 3” abs line
Amherst, NH 03031
Jack D.
Jack D. Checked in
The drain is draining fine. It is only slow when large amounts are drained at once. I believe there new basket strainer is more restrictive than before.
Amherst, NH 03031
Qwentin G.
Qwentin G. Checked in
Cutout 3” elbow and replace with a new one. Test for leaks.
Amherst, NH 03031
Jack D.
Jack D. Checked in
Furnace maintenance completed on Lennox signature series propane furnace. New humidifier pad was installed today. Everything looked great thanks!
Amherst, NH 03031
Mark D.
Mark D. Checked in
Estimate for washing machine hook up
Amherst, NH 03031
Review
First time, here.Wonderful guys, great work. See them, next year!
Amherst - Amherst, NH 03031
Mark D.
Mark D. Checked in
Pm on furnace
Amherst, NH 03031
Jack D.
Jack D. Checked in
Everything went well with the maintenance on your Rheem furnace. I only had to adjust the low fire gas manifold pressure. I found fitting on the vent pipe to have a small leak that had condensation on it. I taped the fitting for temporary fix but I will send an estimate for the repair.
Amherst, NH 03031
Jack D.
Jack D. Checked in
Call back so diagnostic is waved.
Amherst, NH 03031
Mark D.
Mark D. Checked in
Installed new garbage disposal and switch.Repaired first floor toilet
Amherst, NH 03031
Review
Great
Carol - Amherst, NH 03031
Jack D.
Jack D. Checked in
I replaced the basket strainer and the tail piece. They were both corroded and frail. I tested it for leaks and all is well. Thank you!
Amherst, NH 03031
Mark D.
Mark D. Checked in
Repaired 3” vent through roof,
Amherst, NH 03031
Jack D.
Jack D. Checked in
The HomeClub heating maintenance visit went great! I went through each furnace and checked safeties, cleanliness, electrical connections, and gas pressures according to manufacturer specifications. The Bryant furnace in the attic did not require any adjustments. The Whirlpool furnace in the basement needed a slight gas adjustment. Both air filters looked clean so I did not replace them. Thank you and see you next time!
Amherst, NH 03031
Jack D.
Jack D. Checked in
Cleared the kitchen drain with snake and used the rest of the drain after I pushed the blockage out into the main. We ran water and tested operation. I recommend replacing the copper drain tail piece as the bottom is brittle and breaking.
Amherst, NH 03031
Mark D.
Mark D. Checked in
Check flashing she is going to call and set appointment when roofer is here
Amherst, NH 03031
Mark D.
Mark D. Checked in
Removed toilet installed spacer and new gasket.ALSO REPLACED FLAPPER
Amherst, NH 03031
Jack D.
Jack D. Checked in
Repaired a Navien NPE-240S tankless water heater with an issue of inconsistent hot water supply near Amherst. Diagnosed the problem as a malfunctioning flow sensor. Replaced the faulty sensor with a new OEM part and cleaned the heat exchanger to remove scale buildup. After reassembling the unit, performed a system check to ensure consistent water flow and temperature stability. The heater is now operating correctly and the customer is pleased.
Amherst, NH 03031
Jack D.
Jack D. Checked in
Completed a water heater installation in Amherst using customer purchased AO Smith ProLine XE 50-gallon gas model. Removed the old unit, installed the new heater on a stable platform, and connected the water supply lines with new brass fittings. Set up the 3-inch venting system to ensure proper exhaust and connected the gas line with a secure seal. Filled the tank and tested the system for leaks, then adjusted the thermostat for optimal performance.
Amherst, NH 03031
Review
We have used GSMS for years and have always been very pleased with their service!
Maria - Amherst, NH 03031
Response from GSMS Air•Heating•Plumbing:

Love to hear it, Maria!! Thank you for taking the time to shout out our awesome team.

Jack D.
Jack D. Checked in
Cleaned shower head.
Amherst, NH 03031
Mark D.
Mark D. Checked in
Removed pressure switch and cleaned pressure port/repaired two leak and replaced bath rm sink shut off.
Amherst, NH 03031
Trusted Quality & Service
Request Service
servicereturningdetailscustomer schedule
*
Have we served you in the past? (Required)
Yes
No
*
To Serve You Best
Details Regarding Your Request (Required)
*
Your Contact and Service Location (Required)
*
*
What Date Would You Like To Schedule Your Service?(Required)
*
What time of day is best for you? (Required)
First Available
Morning
Afternoon
*
By pressing Submit I agree to receive phone, email, or text messages from GSMS Air•Heating•Plumbing to the provided mobile number and also agree to the GSMS Air•Heating•Plumbing terms and privacy policy. Message & data rates may apply. Consent is not a condition of purchase. We will never share your personal information with third parties for marketing purposes.
Back Next