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Heat pumps for Allston-Brighton two-families, rentals and condos

Ducted heat pumps for Allston-Brighton two-families, three-deckers and condos, timed to the heating season, lease dates and Aberdeen design review.

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Narrow side yard of a gray clapboard two-family in Brighton with a ducted heat pump outdoor unit on a black steel wall bracket bolted to the side wall
ElectricEversource
RebatesMass Save
PermitsBoston Inspectional Services Department
Energy codeSpecialized stretch code since January 1, 2024

Inside an Oak Square two-family boiler conversion

Outdoor unit on a stand in the rear yard, below the stacked back porches, Brighton, near Oak Square
Outdoor unit on a stand in the rear yard, below the stacked back porches
Attic air handler on a raised platform above the second-floor unit, Brighton, near Oak Square
Attic air handler on a raised platform above the second-floor unit

One floor, one deadline

The owner lives downstairs and rents the second floor, where a gas boiler of about 27 years is weeping at the relief valve. Each floor has its own boiler, meters and panel. The lease ends July 31 and the next starts September 1, and Boston's heating season opens September 15, so the work has to fit August.

Sized for the top floor

The load calculation puts the second floor at 21,800 BTU/h at 7°F, most of it lost through the roof. One 2-ton cold-climate heat pump covers it. The air handler sits on a platform in the attic above the insulation, with seven short ceiling runs and one return in the hall ceiling.

The closet scuttle

The only way into the attic is a 20 by 24 inch scuttle in a hall closet, too small for the cabinet. We widen it to 22 by 30 inches and fit an insulated, gasketed hatch. Air sealing and attic insulation go in through Mass Save in June, ahead of the ducts.

Six days in August

Boston ISD permits come through in July. The outdoor unit goes on an 18-inch stand under the rear porches, 14 feet from the back line, with a sound reading there before we finish. The boiler stays connected until commissioning, then comes out and a licensed gas fitter caps the line.

Project facts
ServiceBoiler-to-heat-pump conversion with new ducts, one floor
WhereBrighton, near Oak Square
House1910s two-family; second-floor unit about 1,150 sq ft, rented
BeforeAging gas hot-water boiler, radiators, window units
After2-ton attic heat pump on that unit's own meter
Price$23,600 before rebates
Time on siteSix working days in August, between leases

What brings people to us in Allston-Brighton

A rented floor that can't go cold

From September 15 to June 15 a Boston owner who pays for heat has to hold 68°F by day, so the swap fits a summer vacancy.

You live downstairs and rent upstairs

Each floor gets its own system on its own meter, so one unit can convert this year and the other when its boiler gives out.

One condo in a converted three-decker

The master deed decides where your outdoor unit can sit, and a Boston condo in a building of three or more homes needs a contractor on the permit.

A Victorian in the Aberdeen district

Exterior work visible from a public way goes before the district commission, which meets monthly, so the outdoor spot is planned first.

If you own a two-family near Oak Square and rent the top floor, a heat pump comes with a calendar. Clement Boston Heat Pumps plans heat pump installation in Allston-Brighton, Boston around lease dates, separate meters and the season when a rented home has to stay warm.

Four in five households in the 02134 and 02135 ZIP codes rent their home, against about two in three across Boston. That makes the owner’s decision here as much about timing and who pays the bill as about equipment.

When can a rented floor go without heat?

Not from September 15 to June 15. Boston’s housing code has an owner who pays for heat keep 68°F from 7 a.m. to 11 p.m. and at least 64°F overnight. The summer window decides most rental schedules.

Fitting the work between leases

A ducted conversion on one floor takes about a week on site. If your lease turns over at the start of September, a late-summer vacancy gives room for duct runs through closets and ceilings without working around furniture and residents.

When the floor stays occupied

The old boiler or furnace stays connected until the heat pump is commissioned, so the home is never without heat. Ducts go into the attic and closets first, then registers, then the cutover. Our installation process guide walks through each day.

Owner-occupant, landlord or condo board

Who signs off depends on how the building is owned: one owner living downstairs, one landlord for every floor, or separate condo owners on each level.

  • Owner downstairs, rental upstairs: each floor usually has its own boiler and meter, so each gets its own system. Converting one floor now and the other later is a sound plan.
  • All-rental two- or three-family: one estimate can phase floors over two summers, with the electrical panel upgrade done once for the building.
  • One condo in a converted house: the master deed and the association decide where your outdoor unit and line set can go. Our condo guide covers that conversation.

Boston’s Short-Form Permit page is plain about the condo case: an owner of one floor in a building of three or more homes has to hire a contractor for the work.

How the houses here take ducts

Where an older Allston-Brighton floor heats with hot-water or steam radiators and cools with window units, the ducts are new. The plan is about where an air handler fits on each level.

The top floor

A floor under an unfinished attic is the easy case: an attic air handler on a platform feeds short ceiling runs. Where the only access is a closet scuttle, we check whether the cabinet fits through before choosing it.

The first and middle floors

The first floor takes a basement unit with floor registers. A middle floor of a three-decker has neither attic nor basement, so it takes a closet air handler or a small-duct system; see our three-decker guide and new ductwork.

Outdoor units on tight lots

Where the side yard between two houses off Washington Street or Cambridge Street is a few feet wide, the spot matters. Boston holds residential lot lines to 50 dBA at night, so we favor the rear yard, a wall bracket or the roof over a rear porch, and read the sound at the line before we finish.

Aberdeen: design review comes before equipment

The Aberdeen Architectural Conservation District, designated in 2002, covers the winding streets of Queen Anne, Shingle and Colonial Revival houses near the Chestnut Hill Reservoir. Exterior work visible from a public way goes to its commission.

The commission meets on the second Thursday of each month and asks owners not to start work or buy materials until approval. On an Aberdeen address we photograph the outdoor spot from the street on the first visit. A rear-yard unit that can’t be seen from the street usually keeps the job off the agenda; a corner lot may not.

Allston-Brighton by the numbers

These figures shape the estimate more than any brand choice does.

What Allston-Brighton (02134 and 02135)
Households that rent About 80%, against 64% citywide
Homes built before 1940 49% in Allston, 39% in Brighton
Homes in two- to four-unit buildings About 27%
Heating fuel Gas 57%, electricity 26%, oil 9%
Boston permits naming a heat pump for heating, Nov 2021 to Oct 2026 72, about one in twenty of the city’s, from a tenth of its homes
Permit office Boston Inspectional Services Department
Energy code Specialized stretch code since January 1, 2024

The permit count says ducted conversions are still uncommon here, which matters when a lender, board or buyer asks how the system was planned. We put the load calculation, duct layout and commissioning numbers in writing for that reason.

Rebates, meters and the winter rate on a rental

Mass Save’s rebates run through Eversource on the electric side, and a gas-heated floor qualifies through your gas company’s Mass Save program when the old system comes out. The rebate guide lists every condition.

If a floor still burns oil

About one Allston-Brighton household in eleven still heats with oil. Where one floor runs on a basement tank, switching it off oil is where the rebate and the running-cost case are strongest.

We arrange the Boston Fire Department permit for the oil tank removal once the heat pump carries the home, so the tank comes out in the same visit rather than sitting empty through another winter.

Who pays to run it

A heat pump moves the heating cost onto the unit’s electric meter. If the household upstairs already paid its own gas heat, nothing changes about who pays. If heat was included in the rent, decide how the lease handles the new electric bill before the install.

The winter heat pump rate

Eversource’s seasonal rate lowers winter delivery charges for any household account that heats with a heat pump, so the account holder on that floor gets it. Our electric rate guide explains enrollment, and the cost guide sets out our ranges.

Next door in Brookline, Newton and Watertown

Brookline, on the far side of Cleveland Circle, runs its own permit office and a fossil-fuel-free rule for new buildings and major renovations. Newton shares that approach. Watertown, across the Charles from western Brighton, still allows a gas backup with a boiler-to-heat-pump conversion.

Services in Allston-Brighton

How a job usually runs in Allston-Brighton

Visit while the unit is occupied

We measure the load floor by floor, check each meter and panel, and look at the outdoor spot from the street and from the neighbor's line.

Book the work around the lease

The written estimate names the days on site, so the install lands in a vacancy or before September 15.

Permits and any design review

Boston ISD issues the electrical and sheet metal permits; an Aberdeen address files with the district commission before equipment is ordered.

Commission and hand over

Pressure test, vacuum, charge by weight, airflow and controls, then a short walkthrough for whoever lives on that floor.

Neighborhoods, landmarks and routes

  • Brighton Center
  • Oak Square
  • Aberdeen
  • Cleveland Circle
  • Allston Village
  • Union Square
  • Lower Allston
  • North Allston
  • Faneuil
  • Commonwealth Avenue corridor

Landmarks

  • Chestnut Hill Reservoir
  • Rogers Park
  • Brighton Center
  • Oak Square
  • Harvard Stadium

Getting around

  • Commonwealth Avenue
  • Cambridge Street
  • Washington Street
  • Beacon Street
  • Massachusetts Turnpike
  • Soldiers Field Road
10 mi20 miBostonAllston-Brighton
Open Allston-Brighton, MA in Google Maps

Planning a heat pump in Allston-Brighton?

We start with what heats the house now, the ducts you have or could have, and where the outdoor unit can go.

Allston-Brighton: questions

Can I put a heat pump in the rented floor of my Brighton two-family while people live there?

Yes, though timing matters. Boston's housing code has an owner who pays for heat keep 68°F by day and 64°F at night from September 15 to June 15. We keep the old heat running until the new system is commissioned, or schedule the work in a summer vacancy.

Do I need Landmarks approval for a heat pump on an Aberdeen house?

Only if the outdoor unit, line set or other exterior work is visible from a public way. The Aberdeen commission reviews that work at its monthly hearing and asks owners not to buy materials before approval. A rear-yard unit the street can't see sits outside that review.

What does a ducted heat pump cost for one floor of an Allston-Brighton two-family?

Where a floor heats with radiators, new ducts are part of the job. Our typical range for a heat pump with new ductwork is $20,000 to $40,000 and up before rebates; where usable ducts exist, it is $15,000 to $28,000 and up. The home visit and written estimate set your price.

Who pays to heat a rented unit after it switches to a heat pump?

Whoever holds that unit's electric account, because the heat now runs on electricity. If the household upstairs already paid its own gas heat, the cost stays with them; if you paid for heat, your lease and meter setup need a look before the install.

Can one owner in a converted Allston three-decker add a ducted heat pump alone?

Often, if the master deed and the association allow the outdoor unit and line set on common property. Boston also requires a contractor on the permit for a condo in a building of three or more homes, so the association gets drawings and a sound rating from us early.

Nearby service areas

Guides for houses in Allston-Brighton

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