Enjoy Better Hot Water All Year with GEM

If you’ve ever run out of hot water mid-shower or waited for a tank to refill before doing laundry, you know how frustrating a traditional water heater can be.

Older tanks can struggle to keep up with daily household demands, leaving you with inconsistent temperatures, higher energy bills, and ongoing maintenance. Upgrading to a tankless water heater solves these problems while improving your home’s efficiency. Unlike traditional systems, a tankless model heats water on demand, providing endless hot water while saving space and energy.

At GEM Plumbing & Heating Services, LLC, we help homeowners throughout Rhode Island and Southeast Massachusetts take the stress out of this upgrade with clear guidance and expert installation. Offering decades of experience installing tankless water heaters, GEM makes the process simple.

We handle every detail so you can enjoy reliable hot water and peace of mind. Contact GEM today to schedule your tankless water heater installation.

(833) 222-2953

GEM Technicial Inside Van


(833) 222-2953

Tankless Water Heater Installation Done Right

Choosing the right installer makes a difference in how your system performs over time.

GEM has been working in homes throughout the region for decades, giving our team a clear understanding of local water conditions, housing styles, and system demands. That experience helps us recommend the right tankless setup and complete installations that perform reliably. With technicians already working in neighborhoods across the area, we provide responsive service, clear communication, and a process that feels straightforward from start to finish.


Skilled employees

Trucks on the Road

Years in Business

Emergency Service


GEM’s Step-By-Step Tankless Water Heater Installation Process

GEM keeps the process of installing a tankless water heater simple and straightforward.

We evaluate your household’s water usage, number of bathrooms, and daily demand to determine the right system size, ensuring your new tankless unit can supply hot water efficiently for your family.

GEM walks you through high-quality models, explaining energy efficiency, durability, and capacity. You’ll get clear recommendations that balance performance with your budget.

Our technicians carefully install the unit, connecting plumbing and electrical systems according to code. Every installation is completed with precision to ensure long-lasting reliability.

Once installed, we test the system thoroughly for proper flow, temperature, and performance. We also walk you through operation and maintenance so you feel confident using your new tankless water heater.

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What Our Customers Are Saying

100% Satisfaction Guarantee

4.6
Based on 8895 reviews
GEM plumbing recently installed a ductless minisplit system in my home. The installers did an excellent job. They were extremely knowledgeable, courteous, and patient. They communicated with me every step of the way and took the time to answer all of my questions. The system is working beautifully. If you are looking for a contractor to install a ductless minisplit system, I highly recommend GEM plumbing.
I do wish it hadn’t been so expensive, but I will say I really did feel like my technician understood what he was doing. He was knowledgeable and professional. He explained things well and I’d be happy to work with him again.
William (Bill) and Antony arrived promptly and serviced my boiler system – everything is up and running smoothly (and the hot water is back).!
Dory was friendly, respectful, and went above and beyond!
Omar did an excellent job installing our central air conditioning system. Very efficient and friendly. He got the system up and running quickly and had a great attitude. Kept the house neat while cutting holes in the ceiling for vents. An all around positive experience.
Steve R was amazing and was super helpful and kind 10/10 would welcome back!!
Eliceo from Gem is a professional skilled technician. He explained the installation process and was organized and neat.
Very efficient and focused. They were in and out in no time.
Great job. Very helpful explaining what the problem and what to expect from the repair. Highly recommend Gem.
Walter and Anthony did a great job!
1st time using GEM for plumbing. Process was smooth, the workers were professional and diligent and kept me up to date the entire process. I highly recommend their services
Right on time, very knowledgeable about the issues I had. Great job fixing the leaks I had at home. No doubt I would recommend their service. Thank you Abraham.
Nice people, quick to respond and knowledgeable. Highly recommend them for emergencies. William T. was great, thank so much
First maintenance on our Generac. All went very smoothly!! Arrived within timeframe provided and even informed on actual arrival that day!
Very polite gentleman who went right to work, provided an update once maintenance was completed and explained basic process performed.
David S, our GEM technician was on time, respectful of our home and provided us with a thorough explanation of our GEM service contract and the scope of work completed and recommended. I would highly recommend him again!
Alec and Scott made quick work of what turned out to be a simple solution. Very efficient, pleasant and explained the issue and recommendation clearly.
Both service calls to my house were with Nick, and I can't say enough good things about him. He's professional, courteous, communicative, and thorough. My only hiccup with Gem has been conflicting information from the office, but even with hiccups the staff have been professional and friendly. Thank you, Gem! You're the best, Nick!
great guy! vaery talented and professional
Joseph (Junior) from GEM Plumbing & Heating came out to do a check on our HVAC system for this season. He was very thorough, knowledgeable, and honest. Our system is in great shape after 16 years. Thank you Joe!!! We were on a contract plan, which was very reasonable, so we paid nothing at the time of service.
Our tech was Joseph (junior), Incredible experience came out the same day.Billed me for the service. Exceptional diagnostics, developed a number of options to fix the problem. We called four other places.First three never showed one showed and walked away, without figuring anything out. Our A/C has been out for 6 wks waiting for people to not show up. YOU ABSOLUTELY MUST CALL GEM FIRST
GEM responded very quickly. I was out of state when my tenant called stating the A/c system wasn't working. I called GEM to see if they would be willing to help me. I didn't have an account with them but they were more than willing to assist me with my broken A/C system.
Nick the technician was very knowledgeable and worked with me while I was out of state and with my tenants. He articulated very well, explaining all the issues, what the repair process would involve and the cost. There were no surprises. My tenants informed me that Nick was terrific !
Nick got the system up and running. Overall, it was a very positive experience and I would highly recommend GEM to anyone.
Great service. Timely response and got the job done. It’s on the pricey side but that’s expected given their quick response time. Joe was particularly good and have had him out twice on our property. Thanks!
From beginning to end the experience was amazing. It started with my man Walter who calmly with humor explained the process and my guys Ben and his partner who took cared of me and my family. They were professional and very knowledgeable about the process. Their patience when not finding my well was welcome. Awesome job
Thank you
The people are nice, punctual, pleasant.
And best of all great prices. I'm very happy with the service.
I was very impressed with Dory . He was extremely knowledgeable and very helpful.


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(833) 222-2953

4 Clear Signs Your Home Could Benefit from a Tankless Water Heater

Traditional water heaters are reliable for a time, but there are clear signs that an upgrade is overdue.

Watching for these issues can save you money, improve comfort, and prevent future emergencies.

If your showers or laundry cycles leave you waiting for water to heat up, your current tank may not meet your household’s needs. Tankless systems provide endless hot water on demand.

Older tanks heat and store water constantly, wasting energy. Switching to a tankless model can reduce your utility costs by heating only what you need.

Traditional tanks take up significant space in basements, closets, or utility rooms. Tankless units are compact, freeing up space and giving your home a cleaner, modern look.

Visible rust, corrosion, or leaks indicate your water heater is at the end of its life. Replacing it with a tankless system prevents damage and improves reliability.

How Long Can You Expect Your Tankless Water Heater to Last?

Tankless water heaters are built for longevity, often lasting 20 years or more with proper care, roughly twice the lifespan of traditional tank models.

Their durable components and efficient design help minimize wear, giving you reliable hot water for many years. With regular care, a tankless water heater can provide your home with consistent comfort and fewer replacements.

Unlike traditional units that often fail after a decade, a well-maintained tankless system is engineered to provide reliable service for decades.

Since these systems don’t store water, they are significantly less prone to the rust and sediment buildup that typically shortens the life of tank-style heaters.

Most tankless models are designed with modular parts, allowing for easy repairs and component swaps rather than requiring a full unit replacement when a single part wears out.

Why New England Homeowners Rely on GEM for Tankless Water Heater Installation

Choosing GEM means working with a team you can trust for a major home upgrade.

From expert installation to long-term support, we make your project smooth and reliable. Here are some reasons why homeowners across New England choose GEM for tankless water heater installations:

We understand that waiting for hot water isn’t an option. GEM works quickly to get your system up and running as soon as possible.

With years of hands-on experience installing tankless systems across Rhode Island and Southeast Massachusetts, GEM has the know-how to handle any home.

We provide clear, honest guidance about system choices and installation, helping you make decisions that fit your home and budget.

Every GEM technician is fully licensed and insured, giving you peace of mind that your installation meets all local codes and safety standards. We stay current with industry certifications and regional requirements.

We stand behind our work with strong warranty coverage on both labor and equipment, protecting your investment for years to come. If issues arise, we’re here to make things right.

GEM provides upfront, detailed pricing before any work begins, so you know exactly what to expect. We believe in honest estimates with no surprise charges or last-minute add-ons.

Water heater in a residential basement.

(833) 222-2953


customer and technician interaction

Our GEM Family Cares for Your System’s Entire Life

Your homes HVAC, plumbing and electrical systems work hard all year. Regular maintenance keeps it running efficiently, quietly, and reliably for years to come.

Our Home Comfort Club makes maintenance easy with annual tune-ups, priority scheduling, and discounts on repairs. We catch problems before they become emergencies and keep your home’s systems running the way they should, year after year.


Maintaining Your Tankless Water Heater for Long-Term Comfort

A tankless water heater delivers consistent hot water, but regular care is key to keeping it performing at its best.

Flushing the system, checking for mineral buildup, and inspecting components periodically ensures efficiency, prevents corrosion, and extends the life of your unit.

GEM’s Home Comfort Club takes the worry out of maintenance. Members get routine service visits, automatic reminders, and priority scheduling so their tankless system runs smoothly and provides hot water for years to come. Ask about the Home Comfort Club today!

GEM technician in front of service truck



Schedule Your Tankless Water Heater Installation With GEM

Upgrading to a tankless water heater is a smart investment in comfort, efficiency, and peace of mind.

Reach out today to schedule your free consultation or chat with our team to learn how a tankless water heater can transform your home’s hot water experience.

What Is a Tankless Water Heater and How Does It Work?

A tankless water heater, also known as an on-demand system, heats water only when you need it rather than storing it in a tank. As water flows through the unit, it is heated instantly, eliminating standby energy loss and providing a continuous supply of hot water. This design is more compact and energy efficient than traditional systems, making it a practical option for many homes.

How long does a tankless water heater installation take?

Most installations are completed in a single day, depending on your home’s size and existing plumbing or electrical setup. Some projects may take longer if upgrades or adjustments are needed. GEM works efficiently and keeps you informed throughout the process.

What type of tankless water heaters does GEM install?

GEM installs high-quality, energy-efficient tankless gas and electric tankless water heaters from trusted manufacturers. These systems are selected for reliable performance and long-term durability. Your technician will recommend options that fit your home’s needs and usage.

Will installation require modifications to my home?

Some installations may require minor updates to plumbing, gas lines, or electrical connections. These adjustments help ensure the system operates safely and efficiently. GEM completes all work cleanly and prepares your system for immediate use.