HVAC & Plumbing Services in Watertown, MA
Get Your Comfort Back Without the Week Long Wait
Your home is supposed to take care of you, not the other way around. When the boiler quits on a January night near Watertown Square, or the top floor never cools in July, one phone call puts a licensed technician on the way from our Newton shop, about 20 minutes away.
Tell us what is going on at your Watertown home. We will call you back with a real time slot, not a two week window.
Years in Massachusetts homes
From our Newton shop
Newton and Franklin
Emergency line
Air Conditioning in Watertown, MA
More than four in ten Watertown homes were built before 1940, and two family houses make up a larger share of the housing than single families do. Cooling those is a different job, so we fit the system to the building.

AC Installation & Replacement
Every Watertown home is different. We measure yours first, then help you pick the system that fits it, whether that is central air on your existing ducts or a ductless heat pump for a house with none. In a two family we plan each unit on its own equipment so nobody is sharing a thermostat with the neighbors.
- Central air systems
- Ductless mini splits for homes with no ductwork
- High velocity small duct for pre-war homes
- Cold climate heat pumps that heat and cool
- Load calculation on every quote
- Permits pulled and inspection scheduled
AC Repair
When your AC stops working on a hot day, you need help fast. Our Newton shop is a short run across the Charles, so we offer same day visits when we can, and you can reach us any time, day or night.
- System not cooling or blowing warm
- Ice on the refrigerant lines
- Water pooling around the air handler
- Breaker tripping or unit not starting
- Short cycling and weak airflow
- All major brands serviced


AC Maintenance & Tune-Ups
We check your AC each spring, before the first hot week. A yearly visit helps catch small problems early, keeps your warranty in good standing, and gives us a look at the outdoor unit after a long Watertown winter.
- Coil clean and inspection
- Refrigerant charge check
- Capacitor and electrical test
- Condensate drain cleared
- Thermostat calibration
- Written report every visit
Need cooling help in Watertown?
Free estimates on new systems. Same day repair visits when we can.
Heating in Watertown, MA
About two thirds of Watertown homes heat with natural gas, and the rest run on electric heat or oil. In a housing stock this old that means boilers of every vintage alongside newer furnaces and heat pumps. We work on all of it.

Heating Installation & Replacement
A new system should fit your home, not just match the old one. We look at your house first, then help you pick the right size so it heats evenly all winter. In an older Watertown house we look at the radiators and piping too, because a new boiler on a tired distribution system still leaves cold rooms.
- Gas furnaces
- Steam and hot water boilers
- Oil to gas conversions
- Cold climate heat pumps
- Radiant and ductless systems
- Old equipment removed, permits handled
Heating & Furnace Repair
A cold house can’t wait. When your heat stops working, we come over from Newton and get it running again. Our team is ready all winter long, even in the middle of the night.
- No heat calls, 24/7
- Ignition and pilot failures
- Thermostat and control faults
- Circulator pump failure
- Boiler pressure loss
- Frozen condensate lines


Heating Maintenance & Tune-Ups
An early fall tune-up, before the first cold night in Watertown, with a full combustion analysis and a carbon monoxide safety check on every gas and oil system we service.
- Combustion analysis
- Carbon monoxide test
- Heat exchanger inspection
- Burner clean and adjust
- Safety control test
- Flue and venting check
No heat in Watertown?
24/7 no heat calls all winter. Free estimates on replacements.
Plumbing in Watertown, MA
Need a plumber in Watertown? The same company that handles your heating handles your water, so one visit can cover the boiler or furnace, the water heater and the pipes between them.

Tanked & Tankless Water Heaters
Navien and Rinnai installation and replacement, including the gas line, venting and condensate work that goes with it. Watertown is on MWRA water, which is very soft, so scale is less of a worry here than venting and gas line sizing in an older house. We look at all of it before we quote.
- Navien, Rinnai and Rheem
- Gas line sizing and upgrades
- Venting and condensate routing
- Tank to tankless conversions
- Descaling and annual service
- Permits pulled
Kitchen & Bathroom Plumbing
Fixtures, toilets, sinks, dishwasher lines and remodel rough-ins, quoted upfront before the work starts. Watertown is on MWRA water and sewer, and in older buildings we check the supply and drain lines before we add anything new.
- Faucet and fixture installation
- Toilets, showers, tubs and vanities
- Garbage disposals
- Dishwasher and ice maker lines
- Remodel rough-in
- Leak and drain repair

Plumbing problem in Watertown?
Upfront quotes before the work starts. Active leaks go to the emergency line.
Electrical and Indoor Air Quality in Watertown, MA
Panel space and air quality are the two questions that come up right after a heat pump quote in Watertown. We handle both in-house instead of sending you to a second contractor.

Electrical Service & Panel Upgrades
Panel upgrades for heat pump and whole-home AC conversions, plus general electrical service, done by our own licensed electricians. Older Watertown buildings often need the service upgraded before heat pumps go in, so we check the panel before you commit to new equipment.
- 100 amp to 200 amp upgrades
- Dedicated HVAC circuits
- EV charger circuits
- Outlets, switches and lighting
- Code corrections
- Permits and inspection handled
Indoor Air Quality
Filtration, ventilation and humidity control planned alongside the equipment instead of added on later, whether your Watertown home is a newer condo or an older house that lets in every draft.
- Whole-home air filtration
- UV purification
- Humidifiers and dehumidifiers
- Fresh air ventilation
- Duct sealing and repair
- Allergy and mold concerns

Planning a heat pump conversion?
We quote the panel upgrade and the equipment together, on one estimate.
What Watertown Customers Say
EXCELLENT
Based on 559 reviews
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Jaykob is a true professional.Posted on Google![]()
Joanne DelaportaSeptember 14, 2026Trustindex verifies that the original source of the review is Google.
To James Jackson was exceptionally proficient knowledgeable and professional Went above and beyond expectationsPosted on Google![]()
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Dean was GREAT!! Perfect service!!!!Posted on Google![]()
Rachel DanielsSeptember 8, 2026Trustindex verifies that the original source of the review is Google.
Jackson was incredibly knowledgeable, explained everything clearly, helpful & friendly.Posted on Google![]()
tomAugust 31, 2026Trustindex verifies that the original source of the review is Google.
Jake did a great job he fixed my leak and was extremely thorough. He explained everything to me and was extremely friendly throughout. I was recommended your company by my neighbor and I will recommend them as well!Posted on Google![]()
Irene IoffeAugust 28, 2026Trustindex verifies that the original source of the review is Google.
Bryant is exceptional. He deserve a raise, bonus to let him know how his work is appreciated!
Why Watertown homeowners choose Accurate Baker Elman
- Over 30 years, same company, same trade.
- Mitsubishi Elite Diamond Contractor, which unlocks the extended manufacturer warranty.
- Two local shops. Newton is about 20 minutes from Watertown Square.
- HVAC, plumbing and electrical under one license and one schedule.


Rebates and financing
Watertown homes are served by Mass Save through Eversource for electric and National Grid for gas, so rebates and the 0% HEAT Loan apply to qualifying heat pumps and high-efficiency equipment, and we run 0% promotional financing on installs. We check your eligibility and handle the paperwork.
Book service in Watertown, MA
Tell us what is happening at your Watertown home and we will get you on the schedule. If it is an emergency, skip the form and call.
Watertown HVAC and plumbing questions
Our Newton shop is about 20 minutes from Watertown Square, and Watertown is small enough that the rest of the city is only a few minutes past it. For no heat, no cooling, or an active leak, call the emergency line at (508) 470-4590. We run that line around the clock, and during the heating season we staff it heavily because December through February is our busiest stretch.
Yes for most replacement and installation work. Watertown Inspectional Services issues building, electrical, plumbing, gas and sheet metal permits, and a single heating replacement often needs more than one of them. Massachusetts requires a licensed contractor to pull those permits, not the homeowner. We file them through the city portal, schedule the inspection, and see it through to sign-off.
It depends on the fuel, the system type, and how much of the existing ductwork or piping can be reused. A gas furnace swap in a home with sound ductwork sits at the low end. A boiler replacement in an older two family sits higher, and a full heat pump conversion is higher still before rebates. We quote the actual job after seeing the actual basement, and we give you the number in writing before any work starts.
Yes, and in a city where four in ten homes predate 1940 it is the most common question we get. Ductless mini splits are usually the answer: one outdoor unit feeding indoor heads in the rooms that matter, with no soffits and no lost closet space. High velocity small duct systems are the other option when you want the look of central air and have some chase space to work with. Both cool in summer, and heat pump versions heat in winter too.
Yes. Watertown’s older houses and two families run boilers of every vintage, and those systems need someone who has actually worked on them. We service, repair and replace gas and oil boilers, and we will tell you plainly when a well-kept boiler has years left versus when it is time to plan the replacement.
Watertown homes are served by the Mass Save program through Eversource and National Grid, and qualifying air source heat pump installations are eligible for rebates and the 0% HEAT Loan. The amount depends on whether you are doing a whole-home or partial-home conversion, what you are replacing, and your household eligibility. Rebate levels change year to year, so we confirm current amounts for your specific project before you commit.
All of it. Watertown Square, East Watertown and Coolidge Square, the neighborhoods along Mount Auburn Street, Main Street and Arsenal Street, and out past Arsenal Yards and Mount Auburn Cemetery to the Belmont, Waltham, Newton, Cambridge and Boston lines. ZIP code 02472. You can see the rest of our coverage on our service area page.
All of it, under one company. Heating and cooling, kitchen and bathroom plumbing, tankless water heaters, electrical service and panel upgrades, and indoor air quality. That matters most on bigger jobs: a heat pump conversion in an older Watertown building often needs a panel upgrade, and coordinating that yourself across two contractors is where projects stall.