Weymouth · Heat Pumps
Switching a Weymouth home from oil or gas to a heat pump? See how Weymouth Community Electricity, National Grid's heat pump rate, and older houses fit in, then talk with an independent local installer.
Weymouth, Massachusetts
A heat pump moves your heating cost from the oil truck or the gas meter onto the electric bill, and in Weymouth that bill has two halves worth understanding. National Grid delivers the power and sponsors Mass Save, while the town's Weymouth Community Electricity program buys the supply for residents who stay enrolled. Both halves affect what a winter of heat pump heating costs.
The houses matter as much as the bill. The town's 2026 Housing Production Plan says almost two thirds of Weymouth homes were built before 1960, and about 27 percent of occupied homes still heat with oil, close to 6,900 households by Census estimates. An older oil-heated house is exactly the kind Mass Save's heat pump offers were designed for, as long as it's tight enough to hold the heat.
South Shore HVAC Finder connects Weymouth homeowners with independent heating and cooling contractors. The business you reach designs and installs the system; we don't do the work or set prices.
If delivery prices make winter budgeting hard, an electric system with a predictable supply contract and a seasonal delivery rate may be easier to plan around.
A house that was air sealed and insulated after a home energy assessment needs less heating capacity, which is when a heat pump really shines.
A failing air conditioner is a natural point to install a heat pump on the same ducts and let it carry part of the heating, too.
Local knowledge
Electricity supply, fuel mix, and the Fore River shoreline all come into a Weymouth heat pump plan.
Community Electricity
The town's aggregation buys electricity supply for enrolled residents, and eligible customers were auto-enrolled starting with October 2025 meter reads. Because a heat pump raises winter electricity use, compare your current supply rate with other options before you size up your savings.
Source: Town of Weymouth
Winter Delivery Rate
National Grid offers a reduced delivery rate from November through April for qualifying homes heated fully or partly by a heat pump. It says the rate sits on the delivery side of the bill, so customers on a municipal aggregation can still receive it.
Source: National Grid
Oil And Gas Homes
Census estimates show about 46 percent of occupied homes on utility gas and about 27 percent on oil. Oil replacements apply to Mass Save through the National Grid electric account, while gas replacements go through the Boston Gas account.
Fore River Flood Maps
A FEMA map revision that took effect in September 2016 lowered flood elevations along the Fore River and Idlewell and took some properties out of the 100-year floodplain. Check the current map for your address before deciding how high the outdoor unit must sit.
Source: Town of Weymouth
Right now
Gather these before the first visit so every Weymouth bidder works from the same facts.
Look at the supply section of a recent National Grid bill to see whether you're on Weymouth Community Electricity, basic service, or another supplier, and note the rate.
Add up oil gallons or gas therms from last winter. An installer can turn that into an estimate of your heating load and a rough running-cost comparison.
In an older Weymouth house, sealing the attic and basement before sizing often trims the equipment needed and helps with whole-home rebate eligibility.
North Weymouth, Idlewell, and Fore River addresses should check the town's flood map page so installers can plan the unit's height.
What to expect
A good installer starts with a room-by-room load calculation, then looks at your attic, basement, and electrical panel. In a mid-century Cape or ranch, expect a discussion of whether existing ducts can carry heat pump airflow, or whether ductless heads in the main rooms make more sense, and where the outdoor unit can sit with clear airflow and room for snow.
Permits run through the Department of Municipal Licenses and Inspections at 75 Middle Street, where the inspector of wires handles the electrical side. If the oil burner and tank are coming out, Weymouth Fire Prevention takes the Form 1 application for oil burner and tank removal work by email.
On homes that were raised above flood level, such as the elevated houses on Fort Point Road funded through FEMA's hazard mitigation program, the outdoor unit should be mounted to match. Ask how the contractor will support it and keep the line set protected.
Hire smart
Massachusetts has no single HVAC license. Gas work needs a gas fitter license, oil burner work a Department of Fire Services certificate, ductwork a sheet metal license, and larger refrigeration systems a refrigeration technician license. Most heating and cooling installs need a town permit.
National Grid says many customers with Mass Save-supported installs are enrolled in its heat pump rate automatically once the rebate is processed. Ask the installer what you'll need to do if that doesn't happen.
Ask each bidder whether they belong to the Mass Save Heat Pump Installer Network, which the rebate requires, and which rebate type they expect.
Look up any sheet metal license on the state's occupational license site, and confirm a Massachusetts electrician will handle the new circuits.
Ask whether removing the burner and tank is included, who files the Fire Prevention form, and how the old equipment is disconnected.
Costs
The main factors are how many rooms need heat, whether existing ducts can be reused, how much air sealing the house needs, and whether the electrical panel has room. Removing an oil tank, building a raised mount on a flood-prone lot, and patching where radiators come out can add to the total.
Your running cost depends on both your supply rate and National Grid's delivery charges, so ask installers to estimate operating costs with your actual rates. Rebate terms change, including for installs in 2027, so check current Mass Save rules and get every estimate in writing.
More help in Weymouth
Every page below is written for Weymouth homes. Or start from the Weymouth hvac guide.
Learning Center
Heating and cooling work in Massachusetts is split across several state licenses. Knowing which one matches your system is the fastest way to tell a qualified contractor from a risky one.
Read the guide
A heat pump proposal is only as good as the design behind it. These questions help you compare quotes, protect your rebate eligibility, and avoid a system that's the wrong size for your house.
Read the guideQuestions
Still not sure? Send a short request and a local pro can answer the specifics.
National Grid says yes: its heat pump rate reduces delivery charges, not supply, so customers on a municipal aggregation can still receive it. Check National Grid's page for current eligibility.
Oil, propane, and electric resistance replacements apply through the residential electric account, which is National Grid in Weymouth. Natural gas replacements apply through the gas account.
Sometimes. Heat pumps often need more airflow than an old furnace, so the installer should measure the ducts and check for leaks. Ductless heads are an option where ducts fall short.
The Department of Municipal Licenses and Inspections at 75 Middle Street, including the wiring inspector. Oil burner and tank removal paperwork goes to Weymouth Fire Prevention.
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