Decision guide
Your Air Conditioner Stopped Working: Repair It, Replace It, or Switch to a Heat Pump
By Advanced Ductless · Published · Program sources reviewed
Short answer
If your business’s AC fails, compare a documented repair with a complete replacement proposal before deciding. A heat pump may provide both heating and cooling, with an incentive if the project qualifies. The heat-pump incentives on this page fund eligible installations, not an AC repair bill. A breakdown alone does not establish eligibility.
For a business, Mass Save® lists a $2,000-per-ton commercial air-source heat-pump incentive for qualifying projects. Confirm the utility account, heating system, equipment, and approval path before relying on that amount.
For a home, use the separate residential program. Its standard whole-home rebate is up to $8,500, subject to residential requirements; that is not a commercial cap or a promise for every AC replacement.
A failed AC is a useful moment to compare options, but it is not automatically the cheapest time to switch. Electrical capacity, refrigerant piping, ducts, controls, access, and permits can change the scope. Compare written totals and the effect on your operating hours.
Advanced Ductless sells heat-pump replacements and has a financial interest in that choice. We are based in Randolph and serve Greater Boston. We service our own installations under applicable warranty terms; we do not diagnose or repair other installers’ systems. Obtain that repair diagnosis from the original installer or another qualified service provider.
Should you repair it or replace it?
Start with what is actually known. A symptom such as warm air, a fault code, or a stopped outdoor unit does not establish which part has failed. Ask a qualified service provider for a written diagnosis, the proposed repair, remaining warranty coverage, and an itemized price. Then compare that option with a replacement proposal for the same business needs.
| Situation | What to establish in writing |
|---|---|
| A specific fault has been diagnosed | What will be repaired, what that repair is expected to restore, and whether any other known problems remain. |
| A major component needs replacement | Parts and labor coverage, compatible part availability, total repair price, and the full alternative replacement scope. |
| The system has had repeated faults | Whether the faults have a common cause, what earlier work addressed, and what uncertainty would remain after another repair. |
| The space was uncomfortable before the breakdown | Whether the proposal addresses the actual cooling load, airflow, humidity, and room-to-room differences. |
| The business cannot tolerate an extended outage | Parts or equipment availability, access needs, expected interruption, and any temporary arrangements with a suitable provider. |
| A rebate makes the replacement quote look much lower | Whether that rebate is only estimated or approved, what conditions remain, and what you owe if it is reduced or declined. |
A limited repair can be a reasonable choice, particularly when it is covered and the system otherwise meets the building’s needs. Replacement deserves a closer look when the existing equipment, repair uncertainty, and business disruption no longer fit your plans. Neither a universal dollar threshold nor a percentage of replacement cost can make that decision without the scope behind the numbers.
How old is too old to repair?
Age is useful context, not a fixed retirement date. Maintenance history, operating hours, equipment condition, warranty, and compatible parts matter too. A café that runs long hours and an office used only on weekdays may need different comparisons even when their units were installed in the same year.
A new component does not renew the rest of the system. Ask what a repair would address and which existing parts would remain. Do not treat an older unit as automatically beyond repair, or a newer unit as automatically worth any repair price.
If the installation date is unknown, gather the original invoice, warranty record, and photos of the accessible model and serial labels. Ask the manufacturer or service provider to confirm age and parts support; serial-number formats differ, and a manufacture date is not necessarily the installation date.
Does it matter that your system uses R-410A?
It belongs in the repair discussion, but the refrigerant label alone is not a reason to replace the system. The EPA’s current HFC guidance allows continued repair and servicing of existing equipment during its useful life, including major components. Requirements for a new system are a separate matter.
Ask the service provider about the specific leak or component fault, compatible parts, refrigerant availability, and the quoted repair cost. Do not assume a newer refrigerant can simply be put into the old equipment: the system must be designed for it. We do not predict future refrigerant prices or use a refrigerant change as an automatic replacement deadline.
Check the proposed replacement itself. Any rebate decision must use the current program requirements and exact eligible equipment combination. A general statement about R-410A is not a substitute for that check.
How should you compare replacement quotes?
If replacement is being considered, ask for both the full installed price and the equipment design behind it. Replacing an AC and installing a heat pump may share some work, but removal, electrical changes, piping, mounts, permits, and labor are not automatically identical.
A heat pump adds a heating design question as well as a cooling choice. The quote should say what existing heating equipment stays, how the systems are controlled, and what building work is included. Reusing ducts or refrigerant lines requires a project-specific assessment, not an assumption that the old and new systems have the same requirements.
| Quote item | What to ask the bidder to specify |
|---|---|
| Equipment and design | Exact matched indoor/outdoor models, capacity, zones, load assumptions, and any existing heating or ductwork that remains. |
| Electrical and controls | Required supply, circuits, disconnects, panel work, and the control sequence for any retained heating system; identify allowances and exclusions. |
| Piping, drainage, and access | What is new or reused, condensate drainage, wall or roof penetrations, mounting, roof access, and any lifting or delivery arrangements. |
| Removal, permits, and completion | Who handles disposal, applicable permits and inspections, start-up checks, cleanup, and operating instructions. |
| Business interruption | Proposed work hours, areas out of use, any power interruption, equipment availability, and which dates remain estimates. |
| Payment, incentive, and warranty | Installed price before incentives, estimated versus approved incentive, payment dates, change-order terms, and written parts and labor coverage. |
Compare your obligations before and after any expected incentive. Confirm who receives the rebate and whether you pay the contractor in full before reimbursement. If financing is part of the comparison, include fees, total payments, and any effect on the incentive amount.
Request the assumptions behind any energy-cost estimate: operating hours, utility rates, heating fuel, controls, and equipment ratings. A lower projected bill or a larger rebate does not guarantee that a particular replacement is your lowest-cost option.
What must a business plan before installation?
For a leased storefront, involve the landlord or property manager early. Confirm who may authorize equipment replacement, who owns the existing system, and who is responsible for electrical work, roof or wall changes, and future access. Get approval for the actual proposed locations and scope before a nonrefundable order.
List the business constraints that the proposal must respect: opening hours, busy service periods, delivery windows, staff access, customer routes, roof keys, parking or lifting access, and any shared electrical rooms. Ask which areas or circuits will be unavailable and whether work can be phased. Agree the sequence in writing; a general installation estimate is not a commitment that your shop can stay fully open throughout the work.
For an ice cream shop or food business: cooling the customer or staff space is a different job from servicing a freezer, walk-in cooler, or refrigerated display case. This guide and our replacement assessment concern comfort heating and cooling. We do not offer commercial refrigeration service.
What should you have ready for an assessment?
- Recent electric and gas bills, the existing heating fuel, and the account holder or property contact.
- Accessible model and serial-label photos, the approximate installation date, and any warranty or maintenance records.
- A written repair diagnosis or quote, if you have one, plus the symptoms and any displayed fault codes. Do not open equipment to gather this information.
- The rooms affected, usual operating hours, occupancy, and equipment or activities that add heat to the space.
- A floor plan or rough room dimensions, proposed work-hour restrictions, landlord requirements, and access arrangements.
- Any existing incentive approval or proposal, including its scope, conditions, and completion deadline.
You do not need every record to start a conversation. These details help separate a replacement assessment from a repair diagnosis and identify what must be confirmed before equipment or incentives can be priced reliably.
What does Mass Save® pay to replace a broken AC?
A failed AC is not itself an eligibility category. The commercial heat-pump incentive concerns an eligible heating project: the new heat pump must supplement or replace a qualifying existing heating system, and the account and proposed equipment must meet the program requirements. Replacing an existing heat pump needs Sponsor review rather than an automatic assumption of the standard rebate.
Commercial and residential incentives are separate. Use the program for the actual account and project, not whichever advertised figure is larger.
| Commercial | Residential | |
|---|---|---|
| Air source heat pump | $2,000 per ton for qualifying commercial projects; confirm the standard or custom pathway | $2,650 per ton whole-home, up to $8,500; $1,125 per ton partial-home, up to $8,500; basic $250 per ton, up to $2,500 |
| Pre-approval | Required before installation; follow the approval letter and current application terms | Follow the separate residential process and requirements |
| Program source | Commercial requirements | Residential requirements |
The published commercial rule is pre-approval before installation. It applies from July 1, 2026. Projects up to 35 tons use the standard pathway; larger projects need the Sponsor’s custom pathway. Confirm how the program counts total tonnage for your account. An application or an installer’s estimate is not an approval.
A practical approval and purchase sequence
- Confirm the route. Review the utility account, existing heating fuel, project size, and proposed equipment. If fossil-fuel heat remains, confirm the required integrated control or qualifying existing building-control arrangement.
- Submit the project for review. Provide the equipment/AHRI details, control plan, and other information required by the current application. Request the Rebate Commitment Letter or the appropriate custom-project approval.
- Resolve the purchase terms. As a planning precaution, clarify approval conditions before a nonrefundable equipment order. Get the installed price, incentive assumptions, deposit and cancellation terms, and any financing decision in writing.
- Authorize installation after the required approval. Check the letter’s scope and completion date, landlord authorization, and applicable permit/access arrangements. Confirm changes with the Sponsor when equipment or scope changes.
- Complete the rebate documentation. Retain itemized invoices and the required equipment and installation records, submit through the approved route, and provide access if the Sponsor requires verification.
We do not promise an approval date or a universal commitment-letter lifespan. Use the dates and conditions in your written approval and the current commercial application. For a home, the basic rebate can apply to some AC or existing-heat-pump replacements that do not displace qualifying heating; whole-home and partial-home rebates have different requirements.
Full program detail, including what qualifies and how the assessment works, is on our Mass Save® rebates page. If Eversource is your utility, the Eversource page covers the specifics for your account.
Town name alone does not decide eligibility. In a municipal-electric territory, a commercial project displacing Sponsor-served natural gas may still have a route through the gas account. Projects displacing oil, propane, or electric resistance follow the participating electric-account requirements. Ask for the specific account and fuel basis for any incentive shown on your proposal.
Does a heat pump cool as well as an air conditioner?
A heat pump can provide air conditioning as well as heating. That does not make every model interchangeable: the selected capacity, airflow, room layout, humidity needs, and installation determine whether the system suits your space.
Ask for the exact matched indoor and outdoor models and their published cooling capacity and efficiency ratings. SEER2 describes seasonal cooling efficiency; EER2 describes efficiency at specified test conditions. Larger commercial equipment can use different metrics, such as IEER, so compare models within the appropriate equipment category.
ENERGY STAR’s heat-pump criteria include seasonal cooling-efficiency requirements for cold-climate models as well as low-temperature heating performance. It is inaccurate to describe that designation as skipping cooling testing. Certification thresholds also differ by equipment type; the light-commercial criteria cover separate categories.
Compare capacity and efficiency separately. An efficiency rating does not tell you whether a unit is correctly sized for your shop. Ask how the proposal accounts for occupants, lighting, equipment heat, outdoor-air needs, and the building’s heating load. ACCA’s sizing guidance explains why simply matching the old unit’s tonnage or using a square-foot rule can miss those needs.
What happens when the new system has a problem?
We service our own installations under the applicable warranty terms. Our scope does not include diagnosing or repairing equipment installed by another company. Keep the installation records and the contact details for the provider responsible for your system.
We also handle manufacturer warranty registration after installation. Ask for the registration record and the written warranty applicable to the exact models and how your property is used. Commercial coverage can differ from residential coverage; a headline warranty length is not enough to compare two proposals.
Separate compressor, other parts, labor, and any travel or diagnostic charges. Confirm exclusions, maintenance requirements, registration deadlines, and the process for requesting service. Do not assume a parts warranty includes every cost of a future repair or a guaranteed response time.
Can you finance it?
Eligible Eversource businesses may have financing options through the National Energy Improvement Fund (NEIF). The project, utility account, incentive choice, and lender approval determine what is available.
Eligible National Grid businesses may be able to repay their share of an approved efficiency project through the electric bill. The utility confirms the account, project, payment schedule, and approval.
Financing is subject to the utility or lender’s current terms and approval. Incentive eligibility is determined separately, and a subsidized rate may affect the incentive amount. Compare the written equipment price, incentive, financed amount, rate, fees, and payment schedule before authorizing work.
Financing guidance reviewed September 10, 2026. Public program descriptions, contractor-reported terms, and application routes are on the financing page.
What if you are not ready to replace right now?
Use the repair diagnosis and the needs of the business to decide whether a repair, a temporary arrangement, or a planned replacement is appropriate. If another company installed your system, discuss ongoing operation and repair options with a qualified service provider. We can help scope a future replacement without promising that an unassessed system can keep running.
Compare the proposed schedule with your own quiet periods, lease plans, staff availability, and equipment lead times. Ask what is confirmed and what can change. No season guarantees lower prices, spare contractor capacity, or a faster incentive decision.
If the complaint is limited to a back office or another single room, ask whether a single-zone installation or phased design would address it. Later expansion depends on the selected system’s approved combinations and capacity; it should be designed and priced explicitly rather than promised in general terms.
Summary
- Start with a diagnosis and two written scopes. Repair cost, equipment condition, warranty, comfort, and business disruption all matter. There is no universal age or repair-cost rule.
- For a business, the listed commercial incentive is $2,000 per ton for qualifying heat-pump projects. The account, heating system, equipment, and approval pathway determine whether it applies.
- For a home, residential rates and requirements are separate. Do not apply a residential whole-home cap to a commercial project.
- Compare the full installed work. Electrical, piping, ducts, controls, permits, and access can differ between proposals. A rebate is not a reason to leave those differences out.
- Plan around the business. Resolve landlord permission, operating-hour constraints, access, and payment responsibilities before a nonrefundable order.
- Ask for the exact equipment and its ratings. Cold-climate certification includes cooling criteria; it does not replace a check of cooling capacity, efficiency, and the needs of your space.
- Commercial approval comes before installation. Obtain the required written approval and follow its project conditions and completion deadline. An estimate is not a rebate commitment.
- Our role is replacement and service of our own installations. We earn revenue from replacements. A repair diagnosis of another installer’s equipment belongs with an appropriate service provider; freezer and refrigeration work is outside our scope.
Frequently Asked Questions
We do not diagnose or repair systems installed by another company. We install ductless heat pumps, install ducted heat pumps where suitable ductwork exists, and service our own installations under the applicable warranty terms. For a repair diagnosis of another installer’s system, contact that installer or another qualified service provider. We can assess replacement options. We sell replacements, so we have a financial interest in that choice.
The heat-pump incentives described here fund eligible equipment installations, not an AC repair bill. A broken air conditioner does not itself qualify the replacement. Commercial eligibility depends on the utility account, existing heating fuel, proposed equipment, project pathway, and approval. Residential incentives have separate rules.
There is no universal age or repair-cost percentage that settles the decision. Compare a written diagnosis and repair price with the full replacement scope, remaining warranty, equipment condition, previous faults, parts availability, and business disruption. A limited covered repair can make sense; repeated faults or poor comfort justify reviewing replacement options. Age adds context, but it does not replace a diagnosis.
A heat pump can provide both space heating and air conditioning. Actual comfort depends on the selected equipment, cooling load, airflow, humidity needs, and installation. Ask for the matched indoor/outdoor model numbers, cooling capacity, and the efficiency ratings applicable to that equipment class. Cold-climate certification includes cooling-efficiency criteria as well as low-temperature heating requirements; it is not permission to skip checking the cooling performance of the proposed system.
We service our own installations under the applicable warranty terms and handle manufacturer warranty registration. Ask for the written coverage for your equipment and its commercial or residential use: parts, compressor, labor, exclusions, maintenance requirements, and registration deadlines can differ. A parts warranty should not be read as a promise that every future service visit is free.
Sometimes a single-zone or phased project fits the problem. Adding indoor units later depends on the outdoor unit’s approved combinations, available capacity, controls, and piping design; it is not guaranteed. Describe which rooms are uncomfortable and ask for a written phasing plan. Check how the proposed scope affects any incentive before ordering equipment.
The published commercial rule requires pre-approval before equipment installation. Before a nonrefundable purchase, confirm the project pathway, equipment eligibility, approval requirements, and order-cancellation terms in writing. Obtain the required Rebate Commitment Letter or Sponsor approval before installation and follow its conditions and completion date. A quote or submitted application is not an approval, and no approval turnaround is guaranteed here.
A ducted heat pump may be worth comparing with ductless zones. We install ducted heat pumps where suitable ductwork already exists. An assessment should check duct condition, airflow, equipment compatibility, and the building’s heating and cooling needs before assuming the existing ducts can be reused without changes.
Have the electric and gas bills, existing heating fuel, equipment model and serial numbers, installation or service records, and any written repair diagnosis available. Identify the landlord or property manager, permitted work hours, roof and electrical-room access, delivery restrictions, and the areas that must remain usable. Agree who authorizes property changes and pays for work before a nonrefundable order.
No. This guide concerns heating and air conditioning for occupied business space. Advanced Ductless does not offer freezer, walk-in, display-case, or other commercial refrigeration service. A refrigeration fault needs an appropriate refrigeration service provider, separately from a comfort-cooling replacement assessment.
Sources
- Mass Save® — Commercial Air Source Heat Pumps. Commercial incentive, project pathways, pre-installation approval, and fuel/account eligibility.
- Mass Save® — 2026 Commercial Heat Pump Rebate Form. Current application, documentation, approval conditions, and installation deadlines.
- Mass Save® — Rebate Commitment Letter Application. Account, existing heating fuel, equipment, AHRI, and control information for project review.
- Mass Save® — Residential Air Source Heat Pumps. Separate residential rebate amounts, heating-displacement rules, and eligibility.
- US EPA — Frequent Questions on the Phasedown of Hydrofluorocarbons. Servicing existing systems and the distinction between repair and a new refrigerant system.
- ENERGY STAR — Heat Pump Equipment Key Product Criteria. Cooling and heating efficiency measures, including cold-climate requirements.
- ENERGY STAR — Light Commercial HVAC Key Product Criteria. Efficiency criteria differ by commercial equipment type and capacity.
- National Energy Improvement Fund — Mass Save® Commercial Financing. Eversource program categories and conditional lender terms.
- National Grid — Massachusetts Small Business Program. Conditional on-bill repayment and small-business program requirements.
- ACCA — Sizing and Selecting HVAC Equipment for Proper Humidity Control. Building loads, equipment selection, and why existing tonnage alone does not establish the replacement size.
- GENERAL AIRSTAGE — Mini-Split Warranty Documentation. An example of model- and registration-specific manufacturer terms; request the warranty for the actual quoted equipment.
Disclosure. Advanced Ductless installs heat pump systems in Greater Boston — mostly ductless, and ducted where a building already has usable ductwork — and earns revenue when a reader replaces rather than repairs. We do not service, diagnose or repair equipment installed by other companies, and we do not sell furnaces or boilers or provide commercial refrigeration service. The planning checklists are our practical guidance; the linked utility, lender, and equipment-program requirements determine eligibility and terms. Our proposal cannot substitute for a Sponsor’s approval or a lender’s decision.
Considering a heat-pump replacement for your business?
Bring your utility details, equipment records, and any repair diagnosis. We can assess replacement options, outline the installation scope, and help review the applicable incentive path. No-cost assessment, no obligation.