Starting January 1, 2027, Canton’s new homes and major renovations come under the state’s specialized energy code. For an addition or gut renovation, your permit date decides which rules apply. Clement Boston Heat Pumps plans heat pump installation in Canton, MA for those projects and for the more common one: an existing house with an aging furnace.
For an existing house, the code change barely registers. What matters more is Eversource on the electric side, Eversource Gas on the gas side, and the ducts already in the basement or attic.
Does the new code touch your project?
Only if you’re building new or doing a major renovation. A heating replacement in an existing Canton home is not that kind of project, so the new code won’t push your plan in either direction.
Existing homes
Swapping a furnace, boiler or baseboard for a ducted heat pump is a mechanical replacement. The permit covers the electrical work and the ducts, and the energy code shows up mostly in duct sealing and insulation where ducts run through unheated space. Our furnace conversion page covers that job step by step, and oil-to-heat-pump conversion covers the oil version.
Additions and gut renovations
Canton has run the stretch code since 2017. From January 1, 2027, the specialized code applies, with all-electric or pre-wired paths for new construction and major renovations. A project permitted before that date follows the stretch code. We size the heat pump for the finished house, so the plan holds under either code.
The rebate changes the same day
Mass Save’s whole-home rebate drops on January 1, 2027, from $2,650 a ton up to $8,500 to $2,350 a ton up to $7,500. On a three-ton system that’s $900. Our rebate guide lists every condition.
Canton houses, condos and where the ducts go
Most Canton homes are detached houses, but almost a third sit in buildings of five or more units. Only about one in nine predates 1940, so most houses were built with ducts or room for them.
Colonials, capes and split-levels
A postwar house often has a furnace and ducts in the basement, sometimes with an AC air handler in the attic. Where both are aging, two right-sized heat pumps on the existing ducts replace all of it. We measure static pressure first, because undersized returns are the common reason a swap runs loud. See whole-home heat pumps.
Where the air handler goes
In a basement, the air handler takes the furnace’s place on the existing plenum, with a condensate drain and a float switch. In an attic, it sits on a platform over a secondary pan, and flex duct in the cold space is replaced with sealed, insulated duct.
A split-level with ducts in a crawlspace gets the same leakage check before we reuse them.
Condos and townhouses
In a complex, the association’s rules decide where the outdoor unit sits and what it looks like. We bring the spec, the sound rating and a placement sketch to the board early. Our condo guide walks through the approvals.
Older houses near Canton Center
Where a house predates 1940 and heats with a boiler, there are no ducts to reuse. An attic air handler for the upper floor and a basement unit for the first, joined by a closet chase, is the common plan. Our old-house guide covers the routing choices.
Gas, electric and oil heat in Canton
About 60% of Canton homes heat with gas, 19% with electricity and 16% with oil. Each group starts the conversation from a different place.
| If you heat with | What usually drives the switch | The rebate side |
|---|---|---|
| Gas furnace | Furnace and AC aging together; you want one system | Mass Save gas sponsor (Eversource Gas) |
| Electric baseboard | High winter bills in a condo or addition | Mass Save electric sponsor (Eversource) |
| Oil | Delivery costs and an old tank | Mass Save electric sponsor (Eversource) |
Gas is the cheapest fuel per unit of heat, so the running-cost case there is closer than for oil or baseboard. We show your actual numbers in the estimate; our heat pump vs gas furnace guide explains the math. Baseboard homes see savings on the first bill; see baseboard to heat pump.
Sizing for a winter colder than the city’s
Canton sits inland, between the Blue Hills and Norwood, and its coldest nights run below Boston’s. That changes what the equipment has to deliver at the bottom of the scale.
What the nearby weather station shows
Norwood Memorial Airport, next door, averages about five nights a year at or below 0°F, against fewer than one at Logan. It also sees around 18 nights at or below 10°F, nearly three times Logan’s count.
How we size for it
We run a room-by-room load calculation at your town’s design temperature, then pick equipment by its rated capacity at 5°F, not its nameplate. Backup heat is sized for the rare night below that, and it locks out above a set temperature so it doesn’t run when the heat pump can carry the house. Our sizing guide explains each step.
Permits, Eversource and rebates in Canton
Canton’s building department takes permits online. A ducted job needs an electrical permit and a sheet metal permit, plus a gas permit when a licensed gas fitter caps a gas line.
| What | The Canton answer |
|---|---|
| Permit route | Canton Building Department, online permitting |
| Energy code | Stretch code since July 1, 2017; specialized code from January 1, 2027 |
| Electric utility | Eversource |
| Gas utility | Eversource Gas |
| Rebate program | Mass Save |
| Winter heat pump rate | Eversource, November 1 to April 30 |
Because Canton is Eversource territory, the winter heat pump rate cuts both distribution and transmission charges on every household kilowatt-hour through the heating season. Rebate recipients are usually enrolled without a separate application.
Fees and local noise rules are confirmed per address when we apply. The cost guide sets out our ranges.
From the first visit to a working system
The first visit covers a room-by-room load calculation, a static pressure and leakage check on your ducts, the electrical panel and a spot for the outdoor unit.
- Written estimate: equipment with its capacity at 5°F, duct changes, electrical, permits, rebate path and price, line by line.
- Timing: if you’re near the January 1, 2027 rebate change, the estimate shows both figures.
- Install: usually three to six working days on existing ducts, longer where new ducts go in.
- Commissioning: nitrogen pressure test, vacuum below 500 microns, charge by weight, measured airflow and static, controls set and the backup heat lockout recorded.
Neighboring Norwood runs its own light plant with a separate rebate, while Milton shares Canton’s Eversource service.