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Plumbing, Heating, Cooling & Electrical Experts

Tankless Water Heater Repair in Worcester, Middlesex & Norfolk Counties

A sudden loss of hot water can throw off your entire day, leaving you with cold showers and unfinished chores. When your tankless water heater begins to malfunction, you might notice irregular temperatures, fluctuating pressure, or error codes that point to system failure. Ignoring these early signs can lead to expensive water heater repairs or even complete system replacement, impacting both comfort and efficiency.

Landry Mechanical Inc Plumbing HVAC & Electric offers reliable tankless water heater repair and routine service to restore your system’s performance quickly. Our licensed plumbers handle diagnostics, repairs, and maintenance for all brands, ensuring long-lasting efficiency and consistent hot water throughout your home. We proudly serve homeowners with 24/7 emergency service and dependable plumbing solutions you can trust.

A tankless water heater installation with visible copper piping, intake, and exhaust systems, mounted on a blue panel in a home's utility area.

Tankless vs. Traditional Water Heaters

Traditional water heaters store and continuously heat a large tank of water, keeping it ready for use at all times. This design is convenient but less efficient since it wastes energy maintaining water temperature throughout the day. Tankless systems, on the other hand, heat water on demand, providing endless hot water without the need for storage. They take up less space, last longer, and can help lower utility costs over time. For homeowners considering an upgrade, Landry ensures proper installation and maintenance to get the most from your investment.

Landry’s Tankless Water Heater Services

Maintaining a reliable hot water system is essential for everyday comfort and home efficiency. Landry Mechanical Inc Plumbing HVAC & Electric provides a full range of tankless water heater solutions. From minor fixes to complete installations, our licensed plumbers deliver lasting results that keep your home running smoothly.

Repair and Troubleshooting

If your unit isn’t producing steady hot water or shows an error code, our team will inspect and repair the problem quickly. We address common issues like clogged filters, ignition failures, and fluctuating temperatures to restore your system’s performance. Each repair is completed with precision to ensure consistent results and dependable operation.

Installation and Replacement

Upgrading to a tankless system can help reduce energy use while providing endless hot water on demand. Our plumbers recommend and install high-quality models suited to your home’s water needs and layout. Every installation is carefully tested for efficiency, safety, and long-term reliability.

Routine Maintenance

Regular service is the best way to protect your system from scale buildup and costly malfunctions. During our Landry tankless water heater service, we flush the heat exchanger, inspect the venting, and verify the system’s flow rate. Preventive maintenance helps extend the lifespan of your water heater and ensures consistent comfort year-round.

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Why Homeowners Choose Landry Mechanical

When it comes to hot water solutions, homeowners trust Landry Mechanical for quality service and dependable results. Our technicians combine years of hands-on experience with advanced diagnostic tools to deliver precision repairs and installations every time. From emergency calls to routine tune-ups, we make sure your comfort and convenience always come first.

  • 24/7 Emergency Availability: We’re ready to help at any hour so you never have to go without hot water when your system breaks down unexpectedly.
  • Certified Technicians: Our licensed plumbers are trained to service all major brands and models with accuracy and care.
  • Transparent Communication: We provide upfront pricing and clear explanations, so you know exactly what to expect at every step.
  • Efficient, Lasting Solutions: Each repair or installation is performed with attention to detail, ensuring consistent performance and energy savings.

Get Back to Reliable Hot Water Today

If your tankless system is acting up or you’re considering an upgrade, Landry Mechanical Inc Plumbing HVAC & Electric is ready to help. We provide prompt tankless water heater repair and professional servicing to restore comfort quickly. Contact us today to schedule your appointment and enjoy worry-free hot water again. Check out our customer reviews to see why families continue to choose Landry Mechanical for their plumbing needs.

$25 OFF

Leak Repairs Indoors or Outdoors
Offer Must Be Presented At Time of Sale. Valid for Whole Home Water Filtration System Installs ONLY. Cannot Be Combined With Other Offers. Discounts are for completed installations ONLY. Discounts do not apply to dispatch fees. Some Exclusions Apply. Expires: December 31, 2025

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Hear From Our Satisfied Customers

I was very grateful that the technician came out after 8:00 PM to troubleshoot. He provided a clear assessment of repairs that were needed in a house more than 60 years old. I appreciated the fact that he included prices for each item, too.
Wendolyn Shrock
2 days ago
Sam did a great job! We got text messages during the day when he was on his way.
Linda Garvey
3 days ago
Colin from Landry was wonderful. He was very knowledgeable, explained everything he needed to do and made sure we had all of our questions answered. Highly recommend!
Ann Coonan
3 days ago
Excellent service and care to make sure everything was working.
Gail Morey
3 days ago
Paul & Austin came to service my boiler - very professional, personable, and efficient! Great work by the Landry team.
Taylor Blair
3 days ago
My first experience with the Laundry Mechanical inc Plumbing HVAC, and it was very helpful regarding my concerns and the feedback from the technician.
EINCHKENS Simon
4 days ago
This is the second time we have used Landry Mechanical, specifically coming back to them due to our initial experience with them.. This 2nd job, a bathroom remodel requiring some electrical updates for new heated flooring, lighting and extractor fan changes etc was larger than our previous electrical issue (original dishwasher and garbage disposal wiring in a 20 year old house).. And once again we have to say we are beyond satisfied with the work, demenaour and overall flexability of the team.. Our initial estimate was provided over a month ago.. We did say at the time we were doing a lot of the reno ourselves but plumbing and electrical we wanted done properly with permits so it was not going to be a tommorrow job for them.. So as mentioned about a month post estimate I reached out to them to ask if Mike could call me so I could ask a couple of questions. He was happy to talk with me and answered all my queries.. The Monday of the following week we received the thermostat for the heated flooring. I called their office and asked if they could schedule Mike to come do the work... 2 days later (today) he was here with Josh and again clarified everything they were going to do and by early afternoon they had completed everything, tidied up and were ready to head out... Overall great service and assiatance/attention to detail throughout.. Will def be using them again. Even joined their membership program :-).
Mark Smith
4 days ago
They came and knew exactly what was wrong with our issue and proceeded to fix our plumbing problem quickly and neatly. The fellows were very polite and considerate
Susan McAlice
4 days ago
Randy and Alex very helpful and did a great job. Would highly recommend.
Karin Ouellette
4 days ago
Great service, very professional. I called late on a Friday afternoon when my 95 year old dad's boiler failed when temperatures were well below freezing. When I told them he had no heat, they quickly dispatched a technician.
Michael Rossik
5 days ago
The technicians from Landry Mechanical are professional and friendly. They found the problems and solved the problems for the heating system quickly and successfully. Good job!
sylvia Tao
5 days ago
Randy was friendly, sociable, knowledgeable and efficient. A highly competent employee. I would definitely recommend Randy and Landry Mechanical.
Gary Shaw
5 days ago
I’m very pleased with this company. Joe came and did an annual cleaning and inspection and he was competent, courteous and professional.
Gary Shaw
5 days ago
Most excellent repair experience! Appointment was made quickly and repair done same day keeping our coffee shop running smoothly! Shout out to a great team and repair.
Honeysuckle Roastery
5 days ago
Jose Viveiros was great to work with!
Kristina Khoury
6 days ago
Jose was very professional and the job was done in a timely manner. Thank you for the quick response.
paul adams
1 week ago
The technician came as scheduled and fix the issues professionally.
youfu Li
1 week ago
The service tech you sent was wonderful. Couldn't ask for a more respectful and professional person. I would highly recommend them they came quickly did the way I had to do and cleaned up their own mess. The tech was courteous and professional especially talking to a 95-year-old woman with a bit of dementia. Very kind. I will be hiring him again.
Deen Kane
1 week ago
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    When you need AC, heating, plumbing, or electrical repairs and replacements, call Landry Mechanical Inc Plumbing HVAC & Electric or book online for appointments in Millbury, MA, and throughout Worcester, Middlesex, and Norfolk Counties.