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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.

Fix Before The Freeze

$50 OFF

on Electrical Repairs over $300
Disclaimer: Offer Must Be Presented at Time Of Sale. Valid for Electrical Repairs Quoted By Landry Mechanical for $300 or More. Cannot Be Combined With Other Offers. Discounts are for completed repairs ONLY. Discounts do not apply to dispatch fees. Some Exclusions Apply. Valid 9/1/2026-9/30/2026 Expires: Sep 30, 2026

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Hear From Our Satisfied Customers

Excellent experience with Landry’s Mechanical!
Bill did an outstanding job with my EV charger installation. From the beginning, he was friendly, professional, and took the time to clearly explain the quote and the work that needed to be done. The price was very fair, and there were no surprises.

The installation was completed quickly, and the workmanship was excellent. Everything was done perfectly, and I couldn’t be happier with the finished installation. Bill made the entire process easy and stress-free.

I’m extremely happy with the work and would absolutely recommend Bill and Landry’s Mechanical to anyone looking for quality electrical work.
Charles Cooper
2 days ago
Great company with a sense of urgency. Met three of your plumbers. 5 stars all day! *****
Leo Landry
2 days ago
Mike C was out today to answer questions and what could be done about the poor heating in my house.
He was professional, answered all my questions clearly giving me options that will best fit my situation
Samuel Reynolds
3 days ago
I had a fantastic experience with these guys. The entire team was incredibly friendly and professional from Tim, the person who came out to give my quote, to Julian and Marcus and the rest of the team who did the work. They were very kind, professional, patient in educating me and accommodating my specific requests, and they were all super respectful of me and my home during the job. The units themselves have transformed my home with their quiet and efficient cooling. Thank you so much to the whole team at Landry!
Edward Cardona
3 days ago
Great service, very professional. I would recommend Landry for anyone looking for installation and service of an HVAC system.
Carol Skerry
5 days ago
Landry is amazing! We are always are very happy with who comes to our house ! I recommend Landry to everyone !
Eli Geddes
5 days ago
Fantastic experience. Propane furnace install be another company a couple years ago. Went thru 3 igniters in the last year and was serviced by techs that were obviously not trained on this unit. Contacted Landry and a tech named Louis showed up. Went right at the unit, located the actual problem that was issue and solved it within a day, including getting a new heat exchanger from Hartford. No issues since and the whole house now has more hot water than ever due to the crud in the old unit. VERY HAPPY with Landry. Cudos to Louis !!
Bill37801 Change
7 days ago
Very professional, honest, and quick. We replaced our 26 year old AC unit with a Heat Pump and new condenser. Landry was very professional but their quote was a little higher than some others that I had. But when I drilled into everything that Landry was including, that the other companies were not the price was spot-on. I just felt more comfortable doing business with Landry. The installers were very knowledgeable and I loved that the office sends you an email with the installers photo and names in advance. This is more than just a "nice" email, it's peace of mind knowing who is coming into your home. From the day I had my initial quote from Ed to when installers Garret, Kyle, and Dimitri completed the job was a span of 9 days. And Ed was very helpful in helping do the MassSave Heat loan. Many thanks Landry team!
Kathleen Kehrer
1 week ago
Needed a control board replaced on a hybrid water heater. Landry worked with manufacture and got the part delivered and installed the next day.
Rob Zicaro
1 week ago
Drew was very knowledgeable, courteous and totally customer oriented. He explained how my A/C system worked and ensured I understood. He is an asset to Landry Mechanical.
Brede Woods
1 week ago
Awesome service! They showed up right away, and were very knowledgeable. They made sure everything was taken care of immediately, and these guys saved the day! Awesome job!

Shoutout to Ivan, Drew, and Evan!! The best in the biz!
Michael Clark
1 week ago
Outstanding company to do business with. Bill came to our house and explained everything that was going to be done. Great communications from start to finish. Highly recommend.
Phil W
1 week ago
We just had our early winter pre season check and it was great as usual. Eddie, the technician was prompt courteous and very knowledgeable about the whole system, took time to explain everything to me.
I highly recommend them,
carl vedrani
1 week ago
Great professional staff. Everyone thats come to my house for plumbing or electrical work has been great at listening and evaluating the issues and explaining the solutions. Work is done promptly. Prices are reasonable. I recommend the membership program. One call for plumbing, heating or electrical .
Greta Yeadon
2 weeks ago
If I could give Landry Mechanical 10 stars I would have. Always great service at a great price. Jose and Jack came by today and did the annual water heater flush. Also, they took time to answer my questions as all their technicians do when the job was completed. Thanks for all you guys do :)
Douglas Farr
2 weeks ago
I had Landry install a washer/dryer power and plumbing upstairs in my house. The craftspeople were knowledgeable and thorough and cleaned up well. I think it was a bit more expensive than it could have been but the job was well done. I've also used them for my HVAC service - they're very thorough and professional, and scheduling service is easy, I think because they're a big company. Again, I think they're probably somewhat more expensive than average but the service is worth it to me.
Wayne Simpson
2 weeks ago
Once again we have had the opportunity to have Rosalie come to our home.
She did a checkup on our air conditioning unit and it was done well and it was a good report. Very thankful for the work that Landry and company do!
Leslie Bangma
2 weeks ago
If there was a 10 star I would give it. Joe and Jack were absolutely fantastic. They arrived by 8, were done by a little after 9 and my new toilet looks fabulous. The bathroom is as clean as I left it. They took the old toilet away too. Couldn't be more impressed with these tradesmen. Thank you Gentle men!!
Joanne Klova
2 weeks 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.