Close view of hand using a wrench to tighten a connection on a water heater.

The Hot Water You Rely On Deserves Ongoing Care

Tankless water heaters provide endless hot water on demand while using less energy than traditional tank systems.

Homeowners love the convenience, efficiency, and space-saving benefits, but like any appliance, they require care to continue performing at their best. GEM Plumbing & Heating Services, LLC, helps homeowners across Rhode Island and Southeast Massachusetts maintain tankless water heaters for consistent performance and reliability.

Our trained technicians provide thorough maintenance, expert guidance, and professional care, giving you confidence in your home’s hot water system. Schedule your tankless water heater maintenance with GEM today to keep your system operating efficiently and delivering reliable hot water year-round.

(833) 222-2953


Reliable Care for Your Tankless Water Heater

Proper maintenance helps ensure your tankless water heater continues delivering consistent hot water while operating efficiently and safely.

GEM’s licensed technicians understand the unique maintenance needs of tankless systems, including flushing mineral buildup, inspecting components, and verifying proper system performance. With careful service and attention to detail, we help homeowners across Rhode Island and Southeast Massachusetts keep their tankless water heaters operating reliably and efficiently year after year.

(833) 222-2953


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Emergency Service


What Happens During a GEM Tankless Water Heater Maintenance Visit

Tankless water heater maintenance isn’t a quick rinse—it’s a comprehensive process that ensures every component functions properly.

GEM’s technicians follow a precise, system-specific approach so your water heater performs reliably for years.

Technicians check internal components for wear, corrosion, or damage. Early detection of minor issues prevents larger problems down the line.

Scale and mineral deposits are carefully flushed from the unit, restoring efficiency and helping prevent long-term damage to heating elements.

Air and water filters are cleaned to ensure proper flow and performance. Clean filters improve heating response and prolong system lifespan.

Your system is tested to confirm that water heats consistently and meets your household’s needs. Adjustments are made to ensure reliable temperature and flow.

Your technician will review error codes and safety alerts with you, explain any concerns clearly, and provide actionable recommendations.

Our team will fine-tune your system’s settings for optimal performance and efficiency. Then, they’ll walk you through what was done. You’ll get clear guidance on best practices, maintenance timing, and when to call GEM.

customer and technician interaction

Long-Term Protection for a High-Efficiency System

Like any high-performance system, tankless water heaters benefit from regular care and attention.

GEM’s Home Comfort Club offers a simple way to stay organized with routine service for the systems that keep your household running smoothly, including plumbing components that support reliable hot water. Automatic reminders and routine system visits help ensure important equipment receives consistent service.

Members also benefit from priority scheduling and exclusive savings. While tankless water heater maintenance is scheduled separately, membership makes it easier to plan and coordinate service when your system needs it.

With the Home Comfort Club, keeping track of plumbing, HVAC, and electrical maintenance becomes far easier—helping your home’s systems continue performing reliably.


Reliable Maintenance You Can Count On

Selecting the right team for maintenance is as important as the service itself.

Homeowners throughout Rhode Island and Southeast Massachusetts trust GEM for professional care, reliable solutions, and transparent communication. Here are a few reasons you can too:

GEM explains findings and maintenance needs clearly so you understand what’s happening and why, without feeling rushed or pressured.

Serving the New England community since 1949, GEM understands local water quality, plumbing setups, and seasonal challenges, ensuring your tankless system is cared for correctly.

Tankless water heaters require specialized knowledge and care. GEM’s team of licensed electricians and plumbers is trained to service high-efficiency units properly, using best practices and industry-leading techniques.

Appointments are conducted efficiently and professionally. Technicians work carefully, keeping your home clean and minimizing disruption.

Homeowners get clear pricing before any work begins. GEM recommends only what your system truly needs, helping you make confident decisions without surprises.

GEM makes continued care simple with responsive customer support and convenient online booking. From routine maintenance to future service needs, homeowners know help is always easy to access.

GEM technician smiling inside residential kitchen during service call

(833) 222-2953


What Our Customers Are Saying

100% Satisfaction Guarantee

4.6
Based on 8414 reviews
Thomas Ladd
Solved our problem! Terrific! Patient and polite technician.
Gem has always been my lifesaver and yesterday they came through again. When GEM came yesterday for the annual boiler cleaning they discovered that my boiler was leaking carbon monoxide gas. It had not been leaking the year before so carbon monoxide leaking from your burner. It’s like a tire that’s going flat in the air is coming out. It only gets worse. They gave me an estimate on replacing it, I did some research and they said that they couldn’t install it the next day. The price was in line with everything I had researched and the Bernar rated very high on Trustpilot as did the warranty. Having worked with GEM before, I trust them and I made the deal. Today two men arrived two more came then the Electrician.They got the old burner out they got the new burner installed. They cleaned up the basement and I now have heat and no carbon monoxide.Thanks for being there again GEM.
Daniel Penick
Nice people, quick to respond and knowledgeable. Highly recommend them for emergencies. Orlando C. saved us, thanks
A. H.
A+ service
Ruth D.A
This was the second time Steve serviced my AC system. He is knowledgeable and courteous. He did an excellent job!
Steve, thank you for going above and beyond.
I highly recommend Gem Plumbing and Heating to colleagues, family and friends.
Amanda Bishop
I had contacted GEM because the heat had gone out in my tenants apartment. Anthony and Nehemias came out and determined the issue to be with the pressure switch. They were able to replace the pressure switch and get the heat up and running. They also changed the air filter and performed some system maintenance. Anthony and Nehem were so nice! They explained everything, answered all of my questions, and reviewed with me all of the work that was done once they had finished. I signed up for the GEM Home Comfort Club and am very happy with the service received.
Matthew Cedor
Efficient and informative.

Took the time to answer all of my questions.

Thank you!
Jessica Fairfield
Great job, explained everything and fast! Thx guys!!
Stephanie Igoe
Cameron and Mason provided efficient and effective repair after hours. They were extremely courteous and professional. I am very thankful for them helping us at night.
Lauren Horne
Technician was very polite and informative. Offered good information and was sympathetic about the situation.
David Shikiar
Friendly guy. Got the job done.
Nancy Grasing
Joe arrived the same day I called, assess the problem, and was able to make repairs the next day! Amazing service and a great job
Carlos Santos
Great job very pleasant
Stephanie Boosahda
Spot on estimate, professional, knowledgeable, well-mannered, easy scheduling … Not a thing to complain about; highly recommend.
William Kirk
Easy to work with, always on time and professional
Christine Kirk
Our technician was Joseph. He arrived on time and was very pleasant. He was thorough and explained everything.
Ritesh Patel
Best explanation & so knowledgeable Aaron & Tim.I recommend Gem Plumbing & Heating for anyone!!
Valerie Smith
Joseph K from GEM solved our heating issue. He was professional, thorough and helpful. Our heating system is working perfectly. Highly recommend GEM. All the technicians we have dealt with have been fabulous!
Donna Wenners
had to get a new furnace installed, Alecs and Ethan showed up right on time. They worked tirelessly all day long to make sure everything was up and running. They were professional and courtesy, worked neatly and efficiently. Could not have asked for a better team for our project.
Eva Bickford
Our technician was personable and efficient. He was kind to my 2 dogs as well.
John Peters III
Fantastic service. Quick scheduling; fast and efficient service.
Marcel Desrosiers
Had my A/C maintenance today by David S and his assistant. They were very efficient and got the job done quickly. I like that explained everything as they worked and gave me information about my system.
Richard Killeen
I would again highly recommend Gem!
Douglas and Christopher came installed new insulation on the outside lines, cleaned the whole system And removed mold from the units and added a UV light Air scrubber in the attic. Nice job done by all.
Edward Maloney
I met two fine gentleman this morning. It is great to be updated on arrival times.
Cory explained what was going to be done and approximately how long it would take.
Donald Roy (Don)
Technician that came to our home was very professional and was well prepared to address reason for visit.


Customer and technician shaking hands on the front porch

(833) 222-2953

The Difference Regular Tankless Maintenance Makes

Consistent service helps protect your investment, maintain strong performance, and reduce the risk of unexpected disruptions.

Over time, mineral buildup and normal wear can affect performance, making professional service an important part of keeping your system running smoothly. Here’s how professional tankless water heater service supports long-term reliability and efficiency:

Flushing out scale and mineral deposits keeps heating elements working efficiently, reduces energy usage, and lowers monthly utility costs.

Routine inspections and cleaning reduce stress on components. Well-maintained systems are less likely to fail prematurely, saving money in the long run.

Professional maintenance catches minor issues before they become major problems, ensuring you’re never left without hot water when you need it most.

Maintaining flow and temperature consistency guarantees reliable performance. You’ll experience fewer temperature fluctuations or delays.

Tankless water heaters are a significant investment in your home. Maintenance helps preserve their value and ensures they continue performing optimally.


Additional Water Heating Services from GEM

Tankless maintenance helps protect performance, but homeowners sometimes need additional support.

GEM provides complete water heater solutions designed to keep your hot water system operating safely and efficiently.

GEM helps you select the right system for your household’s size and hot water usage, ensuring installation that supports long-term efficiency and reliable performance.

Our technicians can quickly diagnose error codes and performance issues. Once the problem is identified, they complete the necessary repairs to restore hot water as quickly as possible.

When repairs aren’t cost-effective, replacement is the best option. GEM provides guidance on modern, high-performance units that meet your household’s needs.

GEM services tank and hybrid water heaters for repair, replacement, and preventive maintenance. Every system is treated with the same expert care.

Unexpected problems require quick action. GEM offers responsive 24/7 emergency support to restore hot water and prevent further damage.

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(833) 222-2953

GEM technician in front of service truck

Schedule Tankless Water Heater Maintenance with GEM

Tankless water heater maintenance doesn’t have to be complicated or stressful.

Homeowners throughout Rhode Island and Southeast Massachusetts trust GEM for clear guidance, expert care, and a long-term partnership in plumbing and water heating maintenance. Schedule your maintenance today to protect your system and enjoy uninterrupted comfort.

Call GEM at (833) 222-2953 today. 


Frequently Asked Questions About Tankless Water Heater Maintenance

How often should a tankless water heater be maintained?

Annual maintenance helps prevent mineral buildup and keep your system operating efficiently. Homes with hard water may require more frequent service. Heavy hot water usage can also increase the need for regular maintenance.

Does hard water affect tankless water heaters?

Yes, hard water can cause mineral deposits to accumulate inside your system. This buildup can reduce efficiency and restrict water flow. Regular flushing helps remove scale and protect internal components.

How long does tankless water heater maintenance take?

Most maintenance visits take one to two hours. The timing depends on the system’s size and condition. Systems with significant buildup may require additional flushing time.

Will tankless water heater maintenance improve performance immediately?

Cleaning and flushing the system can improve water flow and temperature consistency. Removing mineral buildup allows your unit to operate more efficiently. Additional repairs may be recommended if other issues are detected.

Is tankless water heater maintenance required to keep warranties valid?

Many manufacturers recommend professional maintenance each year. Skipping service may affect warranty coverage. Maintenance should follow the manufacturer’s guidelines to help preserve protection.