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HVAC, Plumber & Electrician in Watertown, MA

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Across Watertown, older homes near Watertown Square and established residential streets around the East End sit alongside renovated properties and newer development. Years of remodeling can leave a house with systems installed in different eras, while cold winters and humid summers add their own wear to heating, cooling, plumbing, and electrical equipment.

Landry Mechanical serves Watertown homeowners with heating and cooling, plumbing and drain, sewer, and electrical services. Our licensed and insured technicians work across all of these trades, which makes it easier to get the right help when a problem involves more than one part of the house.

Need something repaired, replaced, or checked out? Schedule your Watertown service visit today.

Landry Mechanical service van with blue and orange branding, ladder rack on top, parked on a wet street with green trees in the background.

Heating & Cooling

Older Watertown homes weren’t necessarily built with modern central cooling in mind. Additions and finished upper floors can develop stubborn hot spots in summer, while winter puts furnaces and boilers through long periods of steady use.

Landry Mechanical works with traditional and newer HVAC equipment to help homeowners manage those seasonal demands.

  • Not sure why comfort has changed throughout the house? Our heating and cooling services cover system troubleshooting, maintenance, and other HVAC needs.
  • When the AC runs, but upstairs rooms stay warm, scheduling air conditioning service can help uncover airflow or equipment problems.
  • A breakdown during a humid summer day can make the house uncomfortable quickly. Emergency AC repair is available when the system stops cooling unexpectedly.
  • Repeated repair calls can be a sign that new air conditioning installation deserves consideration instead of another short-term fix.
  • If rooms take too long to warm up or the equipment cycles differently than usual, heating system service can identify what has changed.
  • Losing heat in January can’t always wait for a convenient appointment, which is where emergency heating repair comes in.
  • An older forced-air system may eventually reach the point where furnace replacement and installation is the practical next move.
  • Radiators that aren’t heating evenly may indicate that the home’s boiler system needs attention.
  • If an all-electric system struggles to maintain the thermostat setting, heat pump repair can address performance problems.
  • In spaces where extending ducts would be disruptive, a ductless mini-split system can be useful for an addition, attic, or converted room.
  • Have your comfort system checked before the next stretch of extreme temperatures puts it to the test.

Plumbing & Drain

Watertown’s older housing stock means plumbing may have been repaired, expanded, or replaced in stages over many years. Aging drains, hidden supply lines, mature trees, and finished lower levels can all turn a small plumbing symptom into a more disruptive problem if it’s ignored.

Landry Mechanical handles everyday plumbing repairs along with water heater, drainage, sump pump, and sewer concerns.

  • If you’re seeing leaks, fixture problems, or changes in water pressure, our home plumbing services can help determine what needs attention.
  • A kitchen sink that suddenly stops cooperating may have a jammed unit, and garbage disposal repair can address leaks, grinding problems, and other failures.
  • When hot showers start getting shorter, water heater troubleshooting and repair can identify why the tank isn’t keeping up.
  • With an on-demand system, fluctuating water temperatures may signal that tankless water heater repair is needed.
  • A ceiling stain or damp spot that keeps returning shouldn’t be ignored. Scheduling water leak repair can help stop the source before damage spreads.
  • For homes with below-grade living or storage space, dependable sump pump service helps keep the system prepared for groundwater and periods of heavy rain.
  • Drain cleaning may be the next step when sinks and tubs repeatedly slow down even after basic attempts to clear them.
  • When backups originate farther down the system, sewer line repair and replacement can address damaged or deteriorated underground piping.

If the same plumbing problem keeps coming back, get to the source instead of waiting for another backup or leak.

Electrical

Renovations can dramatically change the electrical demands of a Watertown home. A property that once supported relatively simple lighting and appliances may now have central air, a remodeled kitchen, office equipment, an EV charger, and additional finished living space.

Landry Mechanical helps homeowners address electrical problems and make upgrades that fit the way the house is used today.

  • For outlets that stop working, circuit problems, or planned upgrades, our residential electrical services cover a range of household electrical needs.
  • If added appliances and equipment are pushing an older panel to its limits, an electrical panel upgrade can add capacity for modern loads.
  • Homeowners who want backup power during outages can consider a standby home generator sized around the equipment they want to keep running.
  • Renovating a kitchen, living room, or finished basement often creates an opportunity to improve the space through indoor lighting installation.
  • Instead of relying on slower charging methods, EV owners can add a dedicated car charging station at home.

Bring us the electrical issue or upgrade you have in mind, and get your Watertown appointment scheduled.

Need fast help with plumbing, heating, AC, or electrical? Call or schedule service today!

Why Choose Landry Mechanical?

  • Licensed and insured technicians across heating, cooling, plumbing, drain, sewer, and electrical work.
  • Familiar with the needs of established Massachusetts homes where older systems often coexist with newer renovations and equipment.
  • Straightforward, flat-rate pricing.
  • 24/7 availability with same-day service.
  • Family-owned and operated.
  • A+ BBB Rating.
  • You talk to a real person whenever you call.

Get heating, plumbing, drain, or electrical help for your Watertown home with Landry Mechanical.

End of Summer Flash Sale

$2,250 OFF

Qualifying HVAC Installations
Must present coupon at time of sale. Not to be combined with any other offer. A qualifying HVAC installation means a system provided by Landry Mechanical that provides the primary heating and cooling for a floor of a home, or the complete home. Expires: August 31, 2026

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Hear From Our Satisfied Customers

Excellent service the rep was pleasant, polite and extremely knowledgeable about our issue.
Joe Landry
2 days ago
Evan from Landry Mechanical came last week to do our yearly heating plant review. He explained what he was doing as he proceeded, and completed review and, happy to say, everything was fine.
Dennis W1UE
3 days ago
Update Aug 22, 2026:

We had three separate services completed yesterday and, as we've now come to expect from Landry, every technician was professional, knowledgeable, and courteous. Eddy Russell handled our HVAC maintenance and did a thorough job, explaining what he was doing along the way, adjusting his work order a bit, and completing the job in a timely fashion. Jose Viveiros took care of our plumbing service efficiently, fixed two issues he discovered (Kitchen sink & Bathroom shower), and left everything clean and in great shape. Jonathan Torres installed two mini-split dongles and he and his teammate were prompt, detail-oriented, and made sure everything was working properly before they left. Great communication, quality work, and a smooth experience overall. The only issue I have with to report is not related to the work that was done, but rather the fact that it took many many months for the dongles to be installed. I would have expected some kind of consideration for the prolonged delay. Having said that, I do highly recommend Landry Mechanical.

We engaged with Landry Mechanical and several other HVAC providers in November ‘22 to get bids to replace our aging AC system. The decision to go with Landry was beyond easy, it was a classic no brainer. Between their obvious depth of comprehensive HVAC experience, their knowledge of how to integrate the MASSSAVE incentives into the project, and their commitment to minimizing environmental impact I readily made the decision to leave my long time HVAC provider.

Because of their high value consultative sales approach (Ryan) we ended up contracting with them to replace not just the AC but to install a hybrid ((ductless (mini-split) and duct (heat pump)) system that was completed today under the direction of Jason and with the help of MANY of their team as they worked miracles to complete the install around our hectic holiday schedule. And to top it off, they have guided us through the MASSSAVE process every step of the way so that our actual out of pocket expenses are in part subsidized and part financed at 0%.

In short, without question they have exceeded all my unreasonable expectations from the point of initial engagement to the installation itself. Great team, great customer sensitivity, and now we are fully expecting great reduction in our environmental imprint.
Jonathan Ellman
3 days ago
We have been having some issues with our ac heat in the ceiling unit, we’ve had several people come out and none of them could solve the problem, but today Evan was our guy and he was wonderful in explaining and really looked into the problem! Thank you Evan, much appreciated
Debbie Walters
3 days ago
My tankless hot water heat exchanger corroded and failed, called Landry for repair, Landry sent the technician on the same day. Technicians came on time and looked into the issue and worked with manufacturer to get the part overnight shipped under warranty, came next day and replaced the part. Great service.
ssbollam
4 days ago
Wonderful customer service. Timely and efficient. Highly recommended.
Athena Reese
4 days ago
It starts with the professionalism and courtesy from Anthony and Nick. Not only did they do a great job, but they clean any mess they make. (I know that sounds simple, but you’d be surprised how many contractors miss this point) They kept the noise down to a bare minimum out of respect for my neighbors. They also were working to complete the job from the minute. They came in till the minute they left. Very impressive
Bob Keaney
4 days ago
Awesome service. The 2 young men who came were prompt, professional, very thorough. Would highly recommend.
M Txra
4 days ago
Called Landry Mechanical yesterday around noon to request service as we had no hot water. They were very responsive and sent Joe out to see about our problem. Joe arrived around 3 pm, diagnosed the problem and had us back in hot water by 4 pm. Very professional, efficient, responsive to customer. Would strongly recommend.
Normajene Lamb
4 days ago
Evan was very friendly, courteous and knowledgeable. He diagnosed and fixed our A/C unit in a very timely manner. I would highly recommend him and Landry Mechanical.
Pamela Landry
5 days ago
The installation crew for a water heater and water tank arrived today. They explained everything they were going to do and answered all my questions. The work was very well done and the duo that completed it were helpful, friendly, and extremely competent. This is the second time I have used Landry's. I highly recommend them. I will certainly use them again.
Louise Sisley
5 days ago
Drew was excellent. He was timely, polite and very knowledgeable. He identified our problem which was atypical with his thorough examination. Even gave us a plan B if the issue should happen again. We greatly appreciated his expertise as well as his teaching. We will definitely be keeping Landry as our provider of choice for HVAC service and products.
regina rizoli
5 days ago
Evan was very friendly, courteous and knowledgeable. He diagnosed and fixed our A/C unit in a very timely manner. I would highly recommend him and Landry Mechanical.
Pamela Landry
6 days ago
Evan was friendly, courteous and knowledgeable. He diagnosed and repaired our A/C in a timely manner.. would highly recommend him and Landry Mechanical again!
Pamela Landry
6 days ago
Received consultation for new gas furnace installation. Ed was thorough, professional, and friendly. He explained everything in great detail and made sure all my concerns were addressed. Thank you!
Sabrina Doherty
6 days ago
Rosalie did an excellent job. She is very knowledgeable and I highly recommend her.
Ross Bird
6 days ago
Highly recommend Landry - we needed AC maintenance on central air and mini-split. Easy to schedule appointment, and Sammy did a great job, very personable, professional and clearly explained our options. We were also able to get a maintenance plan at a reasonable price.
Bob Gervais
7 days ago
Professional, respectful and knowledgeable.
Becky Adjei
7 days 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.