What a new boiler costs in Massachusetts

What moves the price

• Fuel. Gas, oil and propane boilers differ in the burner, the venting and whether a tank or a gas line is involved.
• Size. A boiler is sized to the heat the house loses, not to the square footage alone. A bigger or leakier house needs a bigger unit.
• Zones and piping. More heating zones mean more pumps or valves, and old piping sometimes needs work while the system is open.
• Venting. Moving from a chimney to side-wall venting, or lining a chimney, changes the job.
• Removal. Taking out the old boiler and, for oil, dealing with the tank.
• Permit and inspection. The licensed technician pulls the permit where one is required.

The one Massachusetts number

Mass Save does not publish a boiler price. Its published average for a whole-home heat pump installation is $22,000 (installs finished in 2022), and the 2026 whole-home rebate is $2,650 per ton up to $8,500. If you are deciding between a new boiler and a heat pump, the rebate is the part that only the heat pump gets. See heat pump or oil boiler and the calculator.

Replace the boiler or replace the system?

Like-for-like replacement is the lowest-disruption path and no Mass Save rebate applies, except for income-eligible households. A partial-home heat pump keeps the boiler for the coldest days and earns a smaller rebate. A whole-home heat pump retires the boiler. Our page on boiler and furnace replacement lays out all three.

Get a real number

Send a photo of the boiler with its label, one of your electrical panel with the door open, and your town. We can price the like-for-like option and the heat pump from those.