An oil-heated Stoneham house on Eversource has one of the strongest cases for a heat pump of any home near Boston. Clement Boston Heat Pumps handles heat pump installation in Stoneham, MA for oil, baseboard and gas homes, and the running-cost math is where we start.
Close to three in ten Stoneham homes burn oil and about one in five heats with electricity, both above the statewide shares of about 22% and 19%. Those are the two fuels a cold-climate heat pump beats most clearly.
Why oil and baseboard homes come out ahead
Oil and electric resistance are the two costliest ways to heat a Massachusetts home per unit of heat delivered. A heat pump on Eversource’s winter rate costs less than either, so the savings start on the first bill.
The oil comparison
Per unit of heat delivered, oil costs more than a heat pump running on Eversource’s winter rate. The gap is wide enough to carry the case without leaning on the rebate. Our heat pump vs oil guide shows the derivation.
The baseboard comparison
Baseboard turns one kilowatt-hour into one unit of heat. A heat pump moves two to three units for the same kilowatt-hour on a typical winter day, so the same rooms cost a fraction as much to heat. See baseboard to heat pump.
The Eversource winter rate
From November 1 to April 30, Eversource’s heat pump rate lowers both distribution and transmission charges on all household electricity, not just the heat pump. Homes that took a Mass Save heat pump rebate are usually enrolled automatically. Our rate guide covers the details.
Getting ducts into a boiler house
An oil boiler with baseboard radiators means no ducts. A ducted heat pump needs a route for them, and that route depends on the house’s shape.
Two-story houses
An air handler in the attic feeds the bedrooms with short ceiling runs. The first floor gets a basement air handler and floor registers. See attic air handlers and heat pump ductwork.
Capes with knee walls
Where a cape has a finished second floor under the roof, the knee-wall space beside it can hold an air handler and duct runs. Those spaces run cold in winter, so the ducts get sealed and insulated.
Split-levels
Where a split-level has its levels a half story apart, a single air handler in the lower level can often reach them all with short runs. We check this room by room in the load calculation.
What happens to the boiler and tank
When the heat pump carries the house, the oil boiler and the tank come out. That opens the full whole-home rebate and ends oil deliveries.
The rebate
Mass Save’s whole-home rebate pays $2,650 per ton up to $8,500 for installs through December 31, 2026, when the oil system is removed or disconnected. Equipment must be cold-climate listed, and the installer in Mass Save’s network. See our rebate guide and oil to heat pump conversion.
The panel
A heat pump with backup strips adds load that an older 100-amp panel may not carry. We do the math on the first visit; where it falls short, an electrical panel upgrade is a separate line, with Eversource scheduling the service change.
The tank
Our typical range for removing an accessible basement tank is $600 to $1,500, under the local fire department’s permit. See oil tank removal.
If your Stoneham house heats with gas
About 44% of Stoneham homes heat with gas. The running-cost gap is narrower than with oil, so the decision turns on the furnace’s age and on cooling.
A furnace near the end
When the gas furnace is old, a heat pump replaces it on the same ducts and adds central cooling. Mass Save’s whole-home rebate applies through the gas sponsor when the furnace comes out. See furnace to heat pump.
A newer furnace
A dual-fuel design keeps the furnace for the coldest hours under integrated controls, and earns Mass Save’s partial-home rebate instead.
Condos and larger buildings in Stoneham
About 30% of Stoneham’s homes are in buildings of five or more units. A condo heat pump job starts with the board and the building, then the unit.
The board and the building
The board decides where outdoor units can sit, and the building’s electrical service decides how many heat pumps it can carry. We bring the spec, sound rating and a placement drawing to that conversation; see condo heat pump replacement.
Inside the unit
A condo on electric baseboard needs a home for a small air handler: a hall closet, a utility room or a dropped ceiling over a bath. Short duct runs from there reach each room. Where no space works, we say so on the first visit.
Code and rebate rules that apply in Stoneham
Stoneham takes permit applications through its OpenGov portal. A ducted job needs an electrical permit and a sheet metal permit, and a gas permit where a line gets capped.
| What | Stoneham |
|---|---|
| Electric utility | Eversource |
| Gas utility | National Grid |
| Energy code | Stretch code since July 1, 2017; specialized code not adopted |
| Winter heat pump rate | Eversource, lower distribution and transmission charges |
| Rebate route | Mass Save, through Eversource |
Our cost guide explains each of our ranges and what moves a price up or down.
From first call to commissioning in Stoneham
The first visit runs a room-by-room load calculation, finds the duct routes or tests the existing ducts, checks the panel, and picks an outdoor spot away from bedroom windows next door.
- Written estimate: equipment with capacity at 5°F, duct routes, electrical, tank removal, permits, rebate path and price.
- Permits filed through the town’s OpenGov portal before the install date, so inspections can follow the work without a gap.
- Install: three to nine working days, depending on new ducts. On wooded lots near the Fells, the outdoor unit stays out from under trees that drop leaves and branches onto the coil.
- Commissioning: pressure test, vacuum below 500 microns, charge by weight, airflow per room, and backup heat lockout recorded.
Next door, Winchester shares Eversource with larger houses, and Melrose, across the Fells, is on National Grid.