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The Williams Energy installation team on the South Shore
Heating & Cooling

Boiler Installation

A new oil, gas, or propane boiler, sized to your home and installed for decades of even, comfortable heat. Williams Energy installs and stands behind quality boilers across the South Shore, starting with a free estimate.

★★★★★4.8 Google rating
1919Family-owned since
FreeEstimate
Oil, Gas & PropaneAll boilers
Licensed & insured

Boiler installation is a job worth getting right the first time, because a good boiler can heat a South Shore home reliably for decades. Williams Energy installs high-efficiency oil, gas, and propane boilers across our service area, sizing each system to the home it serves. Many of the older Capes and colonials around here were built for hot-water heat long before forced air was common, and a properly installed boiler keeps that kind of home warm and even, room to room, through the coldest coastal winters.


How Boiler Heat Works

A boiler heats your home differently than a furnace. Instead of blowing hot air through ducts, a boiler heats water and circulates it through pipes to give off steady, even warmth. There are no gusts of forced air, no blowing dust, and far fewer cold spots. That gentle, consistent heat is exactly why so many homeowners who grew up with it never want anything else. Boilers deliver their warmth in a few different ways.

Baseboard

Hot water runs through low baseboard units along the walls, the most common setup in newer hot-water homes around the South Shore.

Radiators

Classic cast-iron or panel radiators, common in older homes, hold heat and release it gently long after the boiler cycles off.

Radiant Floor

Pipes beneath the floor turn the whole surface into a warm one. It is the most even and comfortable heat you can put in a home.


Conventional or Combi Boiler?

We install two main kinds of boilers. The right one depends on how your home makes and uses hot water.

Most common

Conventional Boiler

Handles your home's heat and works alongside a separate water heater. It is the proven choice for most homes and the straightforward swap when you are replacing an existing boiler.

Space-saving

Combi Boiler

A combination boiler heats your home and makes hot water on demand from one compact unit, with no storage tank. It saves space and cuts standby losses, which makes it a strong fit for smaller homes. Prefer a dedicated tank? We also install water heaters.


Oil, Gas, or Propane

Your new boiler can run on whatever fuel your home already uses, and we install all three.

Oil Boilers Natural Gas Boilers Propane Boilers

If you are weighing a fuel switch, our natural gas conversion service can change you over as part of the install. And if forced air turns out to suit your home better, our furnace installation covers that route instead.


High Efficiency, Lower Bills

Today's condensing boilers pull far more heat out of every gallon or therm than the old cast-iron units they replace, reaching efficiency ratings in the mid-90s. Over a long New England heating season, that turns into real savings month after month. High-efficiency boilers are also frequent candidates for Massachusetts rebates, and we help you claim every rebate you qualify for, which softens the up-front cost of the upgrade.

Up to 95% AFUECondensing models
Oil, Gas & PropaneEvery fuel
Rebate HelpPay less up front
Free EstimateNo-cost to start

Signs You Need a New Boiler

Boilers are workhorses and often outlast furnaces by years, but nothing runs forever. When you see a few of these together, it is usually time to plan a replacement rather than pour more money into another repair.

  • The boiler is 15 to 30 years old
  • Leaks, puddles, or rust around the unit
  • Radiators or baseboards heat unevenly
  • Heating bills keep climbing
  • Repairs are getting frequent or costly
  • Banging, gurgling, or kettling noises
  • The pilot or ignition keeps failing
  • The system struggles to hold temperature

What a Williams Boiler Installation Includes

A boiler install with us is a complete job, not a drop-and-go. Every installation includes:

A free in-home estimate with proper heat-loss sizing for your home
Removal and disposal of your old boiler
Professional installation to code, including venting, piping, and controls
Permits handled for you
Full system testing and startup before we leave
A walkthrough of your new system and its controls

We Look After It For Life

Once your boiler is running, the same local team keeps it that way. Service plans build in the yearly maintenance that protects your investment and holds its efficiency, and our boiler repair team, with 24/7 emergency service, is one call away if you ever need it. A boiler you buy from us is a boiler we stand behind for its whole life.


Why Install With Williams

Williams Energy has kept South Shore homes warm since 1919, and boiler installation is one part of our full heating and cooling lineup. You work with a local team that knows the older homes around here, sizes the system properly, installs it to code, and is still here for service afterward, rather than a salesperson who moves on once the job is paid.

Here is why neighbors choose Williams, or contact us to start your boiler project.


Trusted by South Shore Neighbors

“Honest, they do what they say they are going to do when they say they are going to do it. The last of old-school customer service!”
Donald I., South Shore customer

Boiler Installation Questions, Answered

What is the difference between a boiler and a furnace?

A boiler heats water and circulates it to radiators, baseboards, or radiant floor pipes for steady, even heat. A furnace heats air and blows it through ducts. Boilers tend to feel gentler and more even, which is why they are so common in older South Shore homes.

Do you install oil, gas, and propane boilers?

Yes, all three. Your new boiler can run on whatever fuel your home already uses, and if you want to switch fuels, we can handle a conversion as part of the installation.

What is a combi boiler?

A combination, or combi, boiler heats your home and makes hot water on demand from a single compact unit, with no separate storage tank. It saves space and reduces standby losses, which makes it a good fit for smaller homes. We can help you decide whether a combi or a conventional boiler suits your home best.

How long does a boiler last?

With regular maintenance, a quality boiler often lasts 15 to 30 years, frequently longer than a furnace. Cast-iron units in particular can run for decades, though efficiency drops as they age, which is part of why many homeowners upgrade before the boiler fully gives out.

Are high-efficiency boilers worth it, and are there rebates?

Condensing boilers reach efficiency ratings in the mid-90s, well above the older cast-iron units, so they use noticeably less fuel for the same heat. Many also qualify for Massachusetts rebates, and we help you claim every one you are eligible for so the upgrade costs less up front.

How long does a boiler installation take?

A straightforward boiler replacement is often done in a day or two. A more involved job, such as a fuel conversion or new piping, can take longer, and we tell you what to expect before installation day so there are no surprises.