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(833) 222-2953

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24/7 Emergency Service

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New High-Efficiency Hot Water System + One Year of Free Home Comfort Club

Waltham, MA Water Heater Replacement

Whether you need emergency replacement or planning an upgrade, GEM can help!

Professional Water Heater Replacement Services

When your water heater is finished, you know it. Now you need a team that can handle the replacement quickly and correctly.

At GEM Plumbing & Heating Services, LLC, we provide professional water heater replacement services in Waltham. Whether your system has stopped working or it’s clearly at the end of its useful life, our licensed plumbers will help you choose the right replacement and get it installed properly. Give us a call today for water heater replacement services in Waltham.

(833) 222-2953

We Serve the Waltham Area

When you’ve decided to replace, you want a company that gets the job done without unnecessary delays.

Our local technicians treat every home as if it were their own. With a large team and stocked trucks serving the Greater Boston area, GEM has the capacity to complete your replacement efficiently. You’ve put up with a failing water heater long enough.

75

Years in Business

700

Skilled employees

24/7

Emergency Service

500

Trucks on the Road

(833) 222-2953

Same-Day Water Heater Replacement Services

Once you know it’s time, there’s no point in waiting.

Every day with a dying water heater brings you closer to a morning without hot water at all. GEM offers same-day replacement services in Waltham, getting your new system installed before your old one quits entirely. Our technicians arrive on schedule, confirm the plan, and complete the installation the same day.

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GEM Makes the Water Heater Replacement Process Easy

You’ve already figured out that replacement is necessary. Let GEM take care of the rest.

GEM handles every step so you can move on.

You’ve made the decision, so let’s get it scheduled. Book online or call to set up an appointment. Our Waltham-area technicians often have same-day availability.

Our team reviews your current setup and identifies the best replacement options for your household. Since you already know you need a new unit, we focus on matching you with the right system.

Once you approve the plan, our licensed plumbers handle everything. We remove your old system, install the new one, and verify every connection is safe and meets code.

We confirm your new water heater operates correctly before we leave. We’ll show you how the system works and cover maintenance basics.

(833) 222-2953

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(833) 222-2953

Here’s Why You Should Replace Your Water Heater

You already know your water heater needs replacing. Here’s what you gain by moving forward.

Your old unit has been wasting energy. New water heaters use less fuel or electricity to produce the same hot water, meaning lower bills starting immediately.

No more wondering if today is the day it finally quits. A new system delivers consistent hot water whenever your household needs it.

You’ve likely already spent money trying to extend its life. A new water heater ends those recurring repair expenses.

A modern, efficient water heater adds to your home’s value. Buyers appreciate systems that won’t need replacement anytime soon.

Don’t Trust Your Home & Family to Just Anyone.

Why Waltham Residents Choose GEM for Water Heater Replacements

When you’ve decided it’s time for a new water heater, you want the work done right without runaround.

You don’t want to wait on parts or deal with unclear pricing. GEM delivers straightforward service with costs you understand before work begins.

Our plumbers serve Waltham and Middlesex County regularly. From the neighborhoods near Moody Street and the downtown area to the residential sections of Warrendale, South Waltham, and along the Charles River, we understand the plumbing systems in this city and treat each job with the attention we’d want at our own homes.

GEM has served the Greater Boston area since 1949. Seventy-five years of water heater replacements means we’ve handled every situation and can resolve yours efficiently.

GEM provides plumbing, HVAC, and electrical services. One company for your home’s major systems means one call when you need something done.

Our team size and inventory allow us to offer same-day water heater replacement across Waltham when needed.

You know what you need. We tell you what it costs upfront, with no surprises after the work is complete.

Your new water heater may qualify for Mass Save rebates. GEM helps you capture those savings and offers financing if you want to spread out the cost.

We install reliable water heaters from manufacturers we trust. Your new system will work correctly from day one.

What Our Customers Are Saying

100% Satisfaction Guarantee

4.6
Based on 9701 reviews
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Bob Wittman
15 hours ago
Erickson was extremely knowledgeable, personable and professional.He was a pleasure to work with and did an outstanding job.
Dave Doyle
17 hours ago
I recently had a mini splint installed by Evan, Nick and Kerron at GEM. Fantastic experience and service–those guys did great. I also had a Generac put in a few years ago, and am pleased with the overall level of service I get from GEM. Hard to go wrong!
Deb Smith
18 hours ago
Checked my humidifier on the furnace and fixed it. Joe H fixed it, he’s great, as always.
David Casper
18 hours ago
Technicians were wonderful. Very knowledgeable and provided multiple options to address a complex problem. Thank you!!!
Paul Hoyt
19 hours ago
serviced our split system in a competent and efficient manner
Joe Lucia
20 hours ago
Tom and Ethan were professional, knowledgeable, and efficient in unclogging the impeller of our outdoor sump pump and cleaning all the leaves and debris out of the underground basins that feed the pump! Highly recommend!
Bill Scarsciotti
20 hours ago
The technicians were very friendly, courteous and through with the work and explained exactly what was done. Went the extra mile to make sure Everyting was just right and left the place clean.
Stasia Mowry
22 hours ago
A very polite and knowledgeable service technician and good service was given.
Julia Frugoli
22 hours ago
This is fourth time we've used this service. They are quick, professional and knowledgable. Very responsive and worth the money!
Anne Geary
23 hours ago
John came to my home to do yearly heating maintenance. He was very informative and thoughtful. I would recommend him he is very knowledgeable and professional.
Kyla Piquette
23 hours ago
Eric is very professional and helpful. If you contact GEM ask for Eric for your appointment.
jarrod Roach
1 day ago
Living on the Cape finding a reliable service company can be difficult. GEM is now my go to for HVAC and plumbing service.
Elizabeth Meredith
1 day ago
Gem is a good company with pleasant people who are always willing to help. We were recently visited by Christopher and Nicholas. Thank you for your help and advice.
Luigi Misuraca
2 days ago
Very professional and helpful really appreciate the work you guys did . Top notch
Tony Lukasiewicz
2 days ago
On time, courteous, efficient and explained what they did.
Roland Jarest
2 days ago
Brian and Mason were fantastic and did a great job!
Sorally Martinez
2 days ago
⭐⭐⭐⭐⭐ I had an excellent experience with GEM Plumbing & Heating! Corey was absolutely wonderful. He was professional, knowledgeable, courteous, and very attentive. He took the time to make sure everything was done properly and provided outstanding customer service. It’s refreshing to have someone who genuinely cares about the quality of their work and their customers. I highly recommend Corey and GEM Plumbing & Heating. Thank you, Corey, for such a great experience!
Donald Dos Vais
2 days ago
If l owned a business l’d hire Tom in a New York minute!! I would definitely not score a 10, but an eleven!!!!!!
Sara
2 days ago
Devin was very knowledgeable, professional and incredibly helpful
Eileen Yee
2 days ago
GEM Service Technicians are always pleasant & efficient. GEM scheduling is difficult- , they always cancel & reschedule.
FX Flaherty
2 days ago
David S. was amazing…he not only greatly assisted us with addressing our issues but he did in such a polite and educational manner…I cannot highly recommend enough..he was great!
Jeannine Kolb
2 days ago
Christopher Brouwer is a great technician. He is knowledgeable, professional and personable. I would recommend him to anyone and would welcome him for any future work on my AC system.
Patricia Antonelli
3 days ago
Installed my air conditioner. Excellent service!!!
Barry Wepman
3 days ago
Brody and Clarissa were really great. Obviously they knew what they were doing and made reasonable recommendations about ongoing service. Most importantly we’ve got heat! And GEM has a new customer!
Robert DelBove
3 days ago
Kevin arrived on time and I was notified that he was on his way. Good communication on the dispatcher’s part. I showed him the utility room and trusted he would do the work so I got out of his way. He was efficient and got the service completed in no time.

Keep Your New Water Heater in Top Shape with Routine Maintenance

You’re investing in a new system. Protect that investment with regular maintenance.

Sediment builds up, parts wear, and small issues become larger problems without attention. GEM offers professional maintenance services to keep your new water heater running efficiently for years. Call GEM today to learn more.

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$49.99 /mo

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We’re Here to Help!

Quality, Friendly Service in Southern New England

(833) 222-2953

Choose GEM for Water Heater Replacement Services in Waltham

You’ve made the decision. Now let’s get it done.

GEM has served Waltham homeowners for decades. We’re ready to get your new water heater installed quickly and correctly. Give us a call or contact us online today.

Other Services You May Need

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Plumbing

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Water Heater Repair

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Maintenance

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Emergency Plumbing

Water Heater Replacement FAQs

How quickly can GEM install my new water heater?

Most replacements are completed in two to four hours. Since you already know you need a new unit, we can often schedule same-day installation. Tankless systems may require additional time if modifications are needed.

Should I choose a tank or tankless water heater?

It depends on your household’s usage, available space, and budget. Tank water heaters cost less upfront and work well for most homes. Tankless models cost more initially but provide endless hot water and last longer. GEM’s plumbers can help you decide what makes sense for your Waltham home.

What rebates are available through Mass Save?

Mass Save offers rebates on qualifying high-efficiency water heaters, including heat pump models. GEM helps Waltham homeowners identify which models qualify and assists with the rebate paperwork.

Does GEM handle removal of my old water heater?

Yes. We disconnect and remove your old unit as part of every replacement. You don’t have to worry about disposal.