Can 617 remove my oil tank?

617 Flow handles qualifying aboveground oil-tank removal or decommissioning. Underground tanks require a qualified excavation and environmental contractor.

Does the conversion include a heat-pump water heater?

Qualifying new whole-home and partial-home installations currently include a heat-pump water heater with standard installation. Replacement projects and work beyond standard installation are excluded.

How much does conversion cost?

Cost depends on the home, equipment, distribution, electrical work, plumbing and existing-system work. Written pricing is provided after assessment and design.

Does 617 guarantee the Mass Save rebate?

No. We design around current requirements and assist with documentation, but final eligibility and payment are controlled by Mass Save and the applicable sponsor.

Gas & Oil to Heat Pump Conversion

Preparing the page.

Plan Before an Emergency

Convert before the old system fails.

A boiler or furnace failure during winter can force a rushed decision. Planning before an emergency gives you time to understand the design, compare incentive pathways and prepare the home. Conversion may also add air conditioning, reduce dependence on oil or gas and address aging equipment.

If repairing the existing system still makes sense, we will explain that option. Repairing today may provide the time needed to design a conversion properly.

Assessment and Design

The equipment does not make the plan. The home does.

Most 617 installation assessments take approximately 90 minutes. We do not begin with a predetermined equipment package. We review the existing heating system, conditioned space, insulation and air-sealing history, electrical service, available installation areas and how heating currently reaches the rooms.

Manual J

We calculate the home's room-by-room heating and cooling loads instead of copying the capacity of an often-oversized boiler or furnace.

Manual S

Equipment is selected for the calculated load, outdoor design conditions and intended operating strategy.

Manual D

When ductwork is involved, duct design is completed unless there is a documented reason it is not required.

One Clear Recommendation

You receive one recommendation. A second option is provided only when there is a legitimate design reason or you request one.

Modern cold-climate heat pumps can provide heating during a Massachusetts winter and cooling during summer. Equipment capability alone does not determine whether a conversion will work: the system must fit the calculated load, outdoor design conditions, layout, electrical capacity and intended operating strategy.

Gas and Oil, One Conversion Practice

One page. Two fuel-specific scopes.

The design process is shared. The work needed to retire or retain the existing fuel system is not.

Existing fuel

Oil Conversion

The scope may include the boiler or furnace, fuel lines, oil tank, domestic hot water and existing distribution. The homeowner may choose a whole-home conversion that disables oil space heating or a partial-home design that retains oil as controlled backup; that choice affects controls, scope and Mass Save eligibility. 617 HVAC coordinates qualifying plumbing, fuel-system work and aboveground tank removal or decommissioning through 617 Flow. Underground tanks require a qualified excavation and environmental contractor because the work may involve soil testing, leakage and environmental requirements outside our direct scope.

Existing fuel

Gas Conversion

A gas conversion may replace the boiler or furnace completely or retain it as controlled backup under a partial-home design. Converting the heating system does not automatically eliminate the gas account: water heating, cooking, fireplaces and other connected equipment must be considered before service is disconnected. When gas heat remains as backup, 617 installs the Mass Save-approved integrated controls required for the applicable zones and tests the heat pump, backup system and control sequence before handoff.

From Assessment to Handoff

Designed, coordinated and commissioned as one project.

Most installations take approximately one to two weeks, depending on the design, existing conditions and related work.

Assess

Measure the home, review the envelope, electrical capacity, existing equipment, distribution and installation areas.

Design

Complete the load calculation, select equipment and define the whole-home or partial-home operating strategy.

Document

Provide one detailed recommendation identifying the equipment, layout, existing-system plan, electrical and plumbing work, controls, permits, inspections, warranties, incentive assumptions, commissioning requirements and complete project pricing.

Coordinate

617 HVAC handles the heat-pump installation and coordinates 617 Flow for included plumbing, fuel, hot-water or aboveground oil-tank work.

Install

Obtain permits, coordinate required inspections and complete the approved scope. Permit and inspection costs are included in the quoted project price. Normal adjustments within the approved scope do not change the price; it changes only for homeowner-selected upgrades or additional work beyond the original scope.

Mass Save Incentives | 2026

The operating strategy changes the incentive pathway.

For 2026, Mass Save lists several residential air-source heat-pump incentive pathways. Eligibility depends on existing fuel, utility sponsor, equipment, weatherization, building type, installation date and documentation. Programs change; 617 helps identify the applicable pathway but does not control or guarantee rebate approval or payment.

Financing

Eligible homeowners may qualify for zero-percent HEAT Loan financing up to $25,000, subject to program requirements and lender approval.
Final incentive eligibility and payment are controlled by Mass Save and the applicable sponsor.

Whole-Home

$2,650 per ton, up to $8,500, for qualifying projects where heat pumps become the sole source of space heating.

Partial-Home

$1,125 per ton, up to $8,500, for qualifying projects that retain backup heat or serve part of the home.

Frequently Asked Questions

Can a heat pump replace oil or gas heat in Massachusetts?

A properly designed cold-climate heat pump can provide whole-home heating. The recommendation depends on the home's calculated load, electrical capacity, distribution and equipment performance.

Can I keep my boiler or furnace as backup?

Yes, under a partial-home design. Approved integrated controls may be required. Keeping backup makes the project ineligible for the Whole-Home rebate but may open eligibility for the partial-home-only $500 sizing and $500 weatherization bonuses.

What does partial-home mean?

It may mean the heat pump serves part of the house. It can also mean the heat pump serves the entire house while oil or gas remains available as backup.

Do I have to remove my existing system?

Not always. Whole-home Mass Save projects require existing space heating to be removed or disabled. Partial-home projects may retain it with required controls.

Service Area

Swipe to explore

Arlington, MABack Bay, Boston, MABeacon Hill, Boston, MABedford, MABelmont, MA

Considering a move away from gas or oil?

Do not wait for the existing system to fail before understanding your options. 617 HVAC will evaluate the home, calculate its heating and cooling requirements and explain the whole-home or partial-home conversion pathway that fits.

Schedule an Assessment Call (617) 835-8058

General Heat Pump Installation

(617) 835-8058

Convert from Gas or Oil to a Heat Pump

Convert before the old system fails.

The equipment does not make the plan. The home does.

Manual J

Manual S

Manual D

One Clear Recommendation

One page. Two fuel-specific scopes.

Oil Conversion

Gas Conversion

Designed, coordinated and commissioned as one project.

Assess

Design

Document

Coordinate

Install

The operating strategy changes the incentive pathway.

Financing

Whole-Home

Partial-Home

Frequently Asked Questions

Service Area

Considering a move away from gas or oil?

Company

Contact

Whole-home or partial-home?

Whole-Home

Partial-Home

Commission

What You Receive

$500 Sizing Bonus

$500 Weatherization Bonus

Basic Installation

Income-Qualified

Small ducts preserved the character of an 1800s home.

The Decision

The Constraint

The Design

The Operating Strategy

The goal stays the same. The installation method changes.

Ducted or Ductless

Unico or SpacePak

Air-to-Water

Heat-Pump Water Heater Offer