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Boiler Repair in Waltham, MA

With 20% of homes on oil, Waltham has a real oil minority rather than a token one. That usually means you have a choice of contractor, which is not true everywhere.

In brief

20% of homes in Waltham run on fuel oil against 57% on gas. The figure describes house heating rather than the appliance itself, but it is the best free indication of which kind of boiler a given street is likely to hold.

Source: US Census Bureau, American Community Survey 5-year estimates, table B25040.

BoilerBridge is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands. Every state page sets out who licenses plumbers there and where to check, so you can confirm before work begins. We carry out no work, we sell no equipment, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call.

How Waltham heats

Both fuels burn indoors and both can produce carbon monoxide when combustion or venting goes wrong, so CPSC’s guidance does not change with the fuel: alarms on every level and annual professional service, whichever you have.

Households in Waltham	Share
Fuel oil and kerosene	20%
Gas — mains and bottled	57%
Electricity	22%
Wood, coal, solar or no fuel	1%

Across the 129 towns we cover in Massachusetts, 21% of households heat with oil. Waltham sits 4 points above that.

Source: US Census Bureau, American Community Survey 5-year estimates, table B25040 (house heating fuel), 2023 release. Universe: 25,692 occupied housing units. What this measures is the fuel. Whether it feeds a boiler or a warm-air furnace is not in the table, and no published figure at this geography settles it.

Carbon monoxide

Any appliance that burns fuel can produce carbon monoxide when combustion or venting goes wrong, and CPSC describes low to moderate poisoning as producing symptoms "similar to the flu (but without the fever)". Flu without a fever, in winter, in a house with the heating on — which is why it is missed.

Source: US Consumer Product Safety Commission, Carbon Monoxide Fact Sheet.

Hot water or steam

If there is a gauge reading in pounds per square inch and a tank somewhere above or beside the boiler, it is a hot water system. If there is a glass tube on the side of the boiler with a water line visible in it, it is steam. The two fail differently and are serviced differently.

Steam is the older arrangement and survives mostly in older housing, which is where a good share of the oil heat in this state is.

Source: US Department of Energy, Energy Conservation Standards for Residential Boilers.

What to ask whoever comes

Ask whether the appliance is hot water or steam, and what its AFUE is. DOE’s minimums run 82 to 86 percent depending on fuel and type, so those two facts decide what a like-for-like comparison even means.

Other Massachusetts towns we route in

Newton Highlands 20% heat with oil
Newton Upper Falls 12% heat with oil
Malden 11% heat with oil
Winthrop 14% heat with oil
Topsfield 42% heat with oil

Everywhere we route in Massachusetts

Checking a plumber in Massachusetts

Massachusetts licenses are issued by the Massachusetts Board of State Examiners of Plumbers and Gas Fitters, which publishes a public search you can use before work begins.

A boiler is not a furnace, and the person you want knows the difference.Tell us it is a boiler, tell us what the gauge reads if you can see it, and we will route you to somebody in your area who works on them. You are never charged. Past boilers, Waltham is covered for the rest of it.

Call (888) 510-4130