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Litchfield, NH

Your Local Plumbing & HVAC Experts in Litchfield, NH

Homeowners in Litchfield, NH, count on GSMS for dependable plumbing, heating, and cooling services. As a family-owned company, we bring decades of experience and a neighborly approach to every service call. Whether you’re looking to upgrade to a ductless system, need a new water heater, or have a plumbing emergency, our licensed team is here to make your home comfortable again.

Schedule your service today by calling 603-424-8258 or request an appointment online.

Ductless Mini-Splits: The Smart Choice for Litchfield Homes

As a Mitsubishi Electric dealer, we specialize in high-efficiency ductless mini-split systems designed for New England homes.

If you’re in Litchfield and looking for a modern, efficient alternative to traditional systems, our team can recommend the ideal Mitsubishi ductless solution for your space.

Plumbing Services for Litchfield, NH

Plumbing problems can disrupt daily life quickly. That’s why GSMS offers full-service plumbing solutions designed to keep your home’s water flowing smoothly and reliably.

Water Heater Repair & Installation

Our plumbers service both traditional and tankless water heaters, restoring hot water fast when you need it.

Whole-Home Water Filtration

Protect your plumbing and enjoy better-tasting water with custom water filtration and reverse osmosis systems built for your home.

Plumbing Repairs & Installations

From leaky faucets to broken fixtures, our licensed plumbers provide reliable solutions for any issue.

Heating & Cooling Services in Litchfield

Keeping your home comfortable in New Hampshire’s changing seasons means having reliable heating and cooling systems. Our technicians are here to handle everything from urgent repairs to complete system replacements.

Furnace & Boiler Services

Stay warm in Litchfield winters with expert furnace and boiler repair, replacement, and maintenance.

Air Conditioning Repair & Installation

Beat the summer heat with AC repairs and replacements designed to keep your home cool and efficient.

Indoor Air Quality Solutions

From air purifiers to humidity control, we help you create a healthier home environment.

Why Litchfield Homeowners Choose GSMS for Home Comfort

As a family-owned business serving Southern New Hampshire, GSMS is trusted by homeowners throughout Litchfield, NH for honest, reliable service. Whether you’re near Campbell High School or along Albuquerque Avenue, our technicians know the unique needs of the community and deliver solutions that last.

When you need comfort restored fast or want to upgrade your home systems, turn to GSMS — the local team your neighbors trust. Call us today at 603-424-8258 or request service online to get started.

Recent Jobs and Reviews in , NH

Job Locations and Reviews

Adam P.
Adam P. Checked in
Thank you for having me out to evaluate your home's comfort issues! Based on my load calculation, your first-floor cooling issues are stemming from the original installation. The previous contractor attempted to cool both the living room and the kitchen by placing one oversized 15,000 BTU unit in the living room. Because that unit is so large for the space it's actually in, it cools the room too quickly and shuts off before it can pull the humidity out of the air—leaving your living room feeling "cold and clammy" while the kitchen stays hot. The Solution: We are going to add a dedicated, perfectly sized single-zone Mitsubishi mini-split directly into the kitchen where the heat is trapped. By running this new kitchen unit continuously, it will act as the "heavy lifter," efficiently cooling the space and pulling the trapped humidity out of the entire first floor. This will allow you to raise the temperature on your oversized living room unit so it stops short-cycling, finally balancing
Barrington, NH 03825
Qwentin G.
Qwentin G. Checked in
Completed the AC maintenance today. Everything looks great. Please see the attached form.
Nashua, NH 03064
Qwentin G.
Qwentin G. Checked in
Completed both of the AC maintenances today. Everything went great! Please see the attached form.
Hollis, NH 03049
Jack D.
Jack D. Checked in
GSMS HOMECLUB AC VISIT.
Manchester, NH 03104
Review
Friendly, thorough and efficient!
Bob - Sandown, NH 03873
Review
Qwentin was super communicative about what the AC service check entailed - accommodating/ polite/professional. Thank you Qwentin!
Susan - Hooksett, NH 03106
Jack D.
Jack D. Checked in
Go over auto changeover on thermostat. Would like to see other options for thermostat. We will send over an estimate.
Manchester, NH 03102
Review
Customer service great, technician knowledgeable & explained what was going on.
Michelle - Manchester, NH 03104
Review
Very good.
Phil - Hooksett, NH 03106
Jack D.
Jack D. Checked in
Furnace PM and wash condenser coil. The vent near the furnace needs fittings to be replaced. The customer said that they will replace them.
Hooksett, NH 03106
Qwentin G.
Qwentin G. Checked in
Completed the AC maintenance today. Everything looks good. Please see the attached form.
Manchester, NH 03104
Qwentin G.
Qwentin G. Checked in
Completed the AC maintenance today. Everything looks great for the age! Please see the attached form.
Hooksett, NH 03106
Mark D.
Mark D. Checked in
Pm on a/c system everything check out good
Sandown, NH 03873
Mark D.
Mark D. Checked in
Water leaking from tub&shower valve.Removed valve and taped lines
Bedford, NH 03110
Qwentin G.
Qwentin G. Checked in
Completed the mini split maintenance. Everything looks great. Please see the attached form. Zak can come out next Tuesday afternoon, 5/19 for the boiler estimate.
Manchester, NH 03109
Jack D.
Jack D. Checked in
Qwentin located a highly visible refrigerant leak directly on your indoor evaporator coil. Fortunately, we were able to locate an exact-match replacement coil for your system, which means we can get this swapped out smoothly. Here is what our team will do to resolve this: Safely recover any remaining refrigerant from your system. Remove the leaking coil and install a brand-new, exact-match ADP evaporator coil. Professionally braze the new copper connections and perform a deep-vacuum of the system to ensure no moisture or contaminants are inside. Recharge your system with the proper amount of new refrigerant and test everything to ensure it is cooling perfectly. A Note on Warranty: We checked the manufacturer's warranty status for your current Advanced Distributor Products (ADP) coil. Unfortunately, because the system is past the 5-year mark, the original manufacturer's warranty has expired.
Nashua, NH 03064
Per your request, I have revised the mechanical design for your home to an all-cassette configuration. Instead of using a traditional wall-mounted unit in the Master Bedroom, I have upgraded all three zones (Front Sitting Room, Back TV Room, and Master Bedroom) to utilize sleek, flush-mounted 1-way ceiling cassettes. This design provides premium comfort while keeping your wall space completely clear across the entire house.

Important Note: Because I am now adding a third ceiling cassette into the layout, I will need to schedule a brief final site visit to specifically confirm the attic access and structural joist clearance above the Master Bedroom before we officially begin the installation.

Scope of Work

1. Outdoor Equipment

Condenser Installation: We will supply and install one (1) multi-zone Mitsubishi outdoor heat pump condenser on the exterior of your home.

Mounting & Protection: We will safely mount the unit on an elevated equipment pad or snow stand to ensure proper drainag
Per your request, I have revised the mechanical design for your home to an all-cassette configuration. Instead of using a traditional wall-mounted unit in the Master Bedroom, I have upgraded all three zones (Front Sitting Room, Back TV Room, and Master Bedroom) to utilize sleek, flush-mounted 1-way ceiling cassettes. This design provides premium comfort while keeping your wall space completely clear across the entire house.

Important Note: Because I am now adding a third ceiling cassette into the layout, I will need to schedule a brief final site visit to specifically confirm the attic access and structural joist clearance above the Master Bedroom before we officially begin the installation.

Scope of Work

1. Outdoor Equipment

Condenser Installation: We will supply and install one (1) multi-zone Mitsubishi outdoor heat pump condenser on the exterior of your home.

Mounting & Protection: We will safely mount the unit on an elevated equipment pad or snow stand to ensure proper drainag
Adam P.
Adam P. Checked in
Per your request, I have revised the mechanical design for your home to an all-cassette configuration. Instead of using a traditional wall-mounted unit in the Master Bedroom, I have upgraded all three zones (Front Sitting Room, Back TV Room, and Master Bedroom) to utilize sleek, flush-mounted 1-way ceiling cassettes. This design provides premium comfort while keeping your wall space completely clear across the entire house. Important Note: Because I am now adding a third ceiling cassette into the layout, I will need to schedule a brief final site visit to specifically confirm the attic access and structural joist clearance above the Master Bedroom before we officially begin the installation. Scope of Work 1. Outdoor Equipment Condenser Installation: We will supply and install one (1) multi-zone Mitsubishi outdoor heat pump condenser on the exterior of your home. Mounting & Protection: We will safely mount the unit on an elevated equipment pad or snow stand to ensure proper drainag
Nashua, NH 03062
Goffstown, NH - Replaced well tank
Mark D.
Mark D. Checked in
Replaced well tank
Goffstown, NH 03045
Qwentin G.
Qwentin G. Checked in
Completed the mini split and central AC maintenance. Everything went great. Please see the attached forms.
Concord, NH 03301
Mark D.
Mark D. Checked in
p.m. on AC system everything checked out fine. could not check the charge because it was 47° outside unit had no crankcase heater customer was fine with that
New Boston, NH 03070
Qwentin G.
Qwentin G. Checked in
Completed the plumbing inspection today. Everything looks great!
Manchester, NH 03103
Mark D.
Mark D. Checked in
Started a/c pm
Manchester, NH 03104
Qwentin G.
Qwentin G. Checked in
Completed the water heater maintenance today. Everything looks great. Please see the attached form.
Merrimack, NH 03054
Review
I’ve used GSMS for years now. They have always provided top notch services and workmanship. Shout out to Jack specifically for today help 🙌🏻
Sam - Concord, NH 03301
Jack D.
Jack D. Checked in
I believe that the three way valve in the boiler was sticking and caused the domestic hot water to trigger a boiler high limit lockout. I reccomend replacing the boiler due to its age.
Concord, NH 03301
Completed the mini split maintenance today. Everything went great! Please see the attached form. Zak will be reaching out soon about the water treatment results.
Completed the mini split maintenance today. Everything went great! Please see the attached form. Zak will be reaching out soon about the water treatment results.
Qwentin G.
Qwentin G. Checked in
Completed the mini split maintenance today. Everything went great! Please see the attached form. Zak will be reaching out soon about the water treatment results.
Nottingham, NH 03290
Jack D.
Jack D. Checked in
Undersink water heater leaking caused by supply hose. I replaced both hot and cold hose. The leak is now gone.
Salem, NH 03079
Jack D.
Jack D. Checked in
I ran almost 2 gallons of water through Ductless system in XRAY. Everything was working properly related to the drain. I could not find a source of a water leak related to the system.
Nashua, NH 03062
Review
Prompt and attentive young man. Excellent job
Sandra - Bedford, NH 03110
Jack D.
Jack D. Checked in
Replace two outdoor faucets. New spigots will be frost free. Cutout mess of fittings and tee in boiler room as discussed with David.
Derry, NH 03038
Qwentin G.
Qwentin G. Checked in
Completed the AC maintenance today. Everything was working great. Please see the attached form.
Bedford, NH 03110
Review
As always, Excellent work!
Jenn - Hudson, NH 03051
Review
Jack is a nice guy. Explains things well. Respectful of my home. Thorough
Georgia - Epping, NH 03042
Review
Arrived on time, was meticulous in his work and answered all my questions, even the ones not related to my service.
Terry - Manchester, NH 03109
Review
Excellent service
Lisa - Exeter, NH 03833
Review
He arrived on time and was neat and orderly and very pleasant to deal with.
Grantly - Bow, NH 03304
Review
Respectful and knows what he is talking about. Even dealt with Stanley in a way they are always welcome back. If i could give more than 5 stars i would.
Holly - Northwood, NH 03261
Review
Very pleased with Qwentin
Bonnie - Bedford, NH 03110
Review
Qwentin was on-time. Friendly, polite, and conscientious. All work was performed and verified. Would recommend to anyone looking for HVAC service or installation.
Thomas - Merrimack, NH 03054
Review
Great service, nice app to track when service tech will arrive. Answered all questions pleasant to talk with and very conscientious.
John L - Bedford, NH 03110
Review
Qwentin was his professional and friendly self today. I am always very happy with his work.
Barry Fitzgerald - Manchester, NH 03109
Review
Glad to see the ole man still working!! LOL
Phil - Windham, NH 03087
Review
Friendly, efficient service
Charlie - Concord, NH 03301
Review
Excellent and very prompt.. Thank you
Mike - Hampton, NH 03842
Review
Great service
Mark - Barrington, NH 03825
Review
Jack did an excellent job cleaning and servicing our mini-split. He is amiable, efficient, and professional. It was a great experience!!!
Kathleen - Nashua, NH 03062
Review
good service
Peter - Merrimack, NH 03054
Review
The best
James - Manchester, NH 03104
Review
.
Zsolt - Nashua, NH 03062
Review
Seems like a thorough inspection and update....great job Qwentin.
Phil - Windham, NH 03087
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