Oil to Heat Pump Conversion on Long Island

Last updated October 26, 2026Reviewed by Waseem Shahzad, Lead Technician

Replacing or backing up oil heat with a cold-climate heat pump: the options, what the work involves and what drives the cost.

A heat pump conversion replaces oil heat, or takes over most of the heating from it, with a cold-climate heat pump that also cools your home in summer. On Long Island the usual choices are a ducted heat pump on existing ductwork, ductless mini-splits for homes with baseboard or radiators, or a dual-fuel setup that keeps the oil boiler or furnace as backup. K2 installs all three within 15 miles of Deer Park.

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Which Long Island Homes Suit an Oil to Heat Pump Conversion?

Oil-heated homes with ducts, homes with hot-water baseboard and no central air, and anyone facing a new oil burner or an aging tank are the strongest candidates. The deciding factors are the house itself: insulation, existing ductwork, the electrical panel, and how you want to handle the coldest nights.

Ducted heat pump. If the house already has ductwork from a furnace or central air, a ducted cold-climate heat pump can use it, after we check that the ducts are sized and sealed well enough to carry heat.
Ductless mini-splits. Common across western Suffolk and eastern Nassau, where many capes and ranches were built with baseboard or radiators and no ducts. Wall or ceiling heads go in the rooms that need them; see ductless mini-split installation.
Dual fuel. The heat pump carries most of the season and the existing oil boiler or furnace stays as backup for the coldest nights, with integrated controls handling the switchover. It is often the gentlest first step for an older house.

Every system we install is a cold-climate model from the NEEP cold-climate listing, sized with a room-by-room load calculation for January as well as July. If natural gas is on your street, compare this with an oil-to-gas conversion before deciding.

What Does the Conversion Involve, and How Long Does It Take?

The work runs in this order: a load calculation, a choice of ducted, ductless or dual fuel, electrical work for the outdoor unit, installation and start-up, then a decision about the oil equipment and tank. A single-zone ductless install usually takes about a day; multi-zone and ducted systems take longer.

Assessment and load calculation. We measure the heating load room by room and look at the ductwork, the electrical panel and where the outdoor unit can sit, clear of snow drifts and roof runoff.
System choice. Ducted, ductless or dual fuel, quoted in writing with the equipment and its cold-climate rating listed.
Electrical work. The outdoor unit needs a dedicated circuit and a disconnect. Many older Long Island homes still have 100-amp panels, which can add panel work.
Installation and start-up. Refrigerant lines are pressure tested with nitrogen and pulled into a deep vacuum, flare joints are torqued to spec, and we confirm heating and cooling output before we leave.
The oil system. With dual fuel, the boiler or furnace stays and the controls are set to use it as backup. With a full changeover, the oil tank must be removed or abandoned by a licensed tank company under town and fire marshal rules.

Most single-zone ductless installs are finished in one day, and multi-zone systems with three to five indoor units usually take two to three days. Equipment changes can need town approval; K2 does not file town permits, so confirm the requirements with your building department before the work is scheduled.

What Does Converting From Oil to a Heat Pump Cost?

As an estimate for planning, K2's range for an all-new heat pump system on Long Island is $12,500 to $20,000, which is the usual case when a home converts from oil. Ductless jobs in our records paid a median of $8,291. Your written quote follows the assessment.

Ducted, ductless or dual fuel. Using sound existing ducts costs less than adding zones room by room; dual fuel keeps the cost of the backup you already own.
Number of zones on a ductless system, and how far the refrigerant lines have to run.
Electrical work, especially where a 100-amp panel needs upgrading.
Duct repairs where old ductwork is leaky or undersized for heat.
The oil tank, if it is being removed rather than kept for a dual-fuel backup.

The ductless figure comes from 8 installs in K2's job records from January 2022 to October 2026, where individual jobs ranged from $2,950 to $26,077. See heat pump cost on Long Island for how these ranges are built. Financing is available through Rheem KwikComfort, credit by Synchrony Bank.

Are There Rebates for Switching From Oil to a Heat Pump?

PSEG Long Island runs heat pump rebates through its NYS Clean Heat program. Homeowners can apply through a PSEG Long Island participating contractor or directly with PSEG Long Island. K2 is not a participating contractor and does not file rebate paperwork, so confirm current terms at psegliny.com before you buy.

Rebate rules usually ask for a qualifying cold-climate model and a load calculation showing the system covers the house, so keep the Manual J report, the equipment model numbers and the final invoice together. Our guide to PSEG Long Island heat pump rebates in 2026 explains the program as it stands. Terms change, so check psegliny.com for the current process.

Brands We Service

Our technicians work on all major brands, including:

Carrier
Mitsubishi Electric
Daikin
Bosch
Trane
Rheem

Areas We Serve

We serve homes within about 15 miles of our shop at 60 S 2nd St, Unit V in Deer Park, across western Suffolk and eastern Nassau County. Local pages for the towns we cover:

What Our Customers Say

"This is my second (distinct) job with K2 HVAC and I couldn't be more appreciative of their prompt and quality services. The first job (a replacement of my heating unit) was handled excellently by Shelby and the second (a replacement of my hot water unit) was amazingly handled by Waseem. The backend customer support is fantastic too, as Sadia is ever responsive by text and phone call. All said, I recommend their services wholeheartedly!"

tobi bell Google review

"Waseem is excellent. He checked my hearing system, diagnosed the problem and fixed the whole system. Now the heat is working excellently. I am high recommending this company to any person’s house. He is very thorough and spent as much as was needed to repair the heat. We are very thankful. He is excellent. Thank you so much to your company."

Tamara Shashiashvili Google review

"This was my first time using K2 Cooling & Heating, and I couldn't be happier with the experience. Waseem arrived on the scheduled day right on time and took the time to listen carefully to the issues I was having with my HVAC unit before beginning any work. He quickly diagnosed the problem and explained everything clearly in a way that was easy to understand. His professionalism, knowledge, and attention to detail were outstanding. He fixed the issue efficiently and made sure everything was working properly before he left. It's refreshing to work with someone who genuinely cares about providing excellent customer service. I highly recommend Waseem and K2 Cooling & Heating to anyone looking for honest, reliable, and knowledgeable HVAC service. I will definitely be using them again in the future!"

Shahid Ali Google review

Oil to Heat Pump Conversion: Frequently Asked Questions

Can a heat pump replace my oil heat completely?

In many Long Island homes, yes. A correctly sized cold-climate heat pump keeps producing useful heat at the temperatures we see on the coldest nights. Whether a full changeover makes sense depends on insulation, ductwork and the load calculation, which is why many homeowners start with dual fuel and keep the oil boiler or furnace as backup.

What is dual fuel?

A dual-fuel system pairs a heat pump with your existing boiler or furnace. The heat pump carries most of the heating season and also cools in summer, and integrated controls switch to the oil equipment on the coldest nights. You keep a backup you already own while cutting how much oil you burn.

My house has baseboard heat and no ducts. Can I still convert?

Yes. Ductless mini-splits are made for houses without ducts. Wall or ceiling heads go in the rooms that need them, connected to an outdoor unit by a small refrigerant line, and the baseboard system can stay as backup. A single-zone install usually takes about a day.

What happens to my oil tank?

With dual fuel the tank stays, because the boiler or furnace still uses it as backup. With a full changeover, the tank has to be removed or abandoned by a licensed tank company following town and fire marshal rules. Keep that paperwork, since buyers and insurers often ask for it.

Does K2 file the PSEG rebate or the town permit for me?

No. K2 is not a PSEG Long Island participating contractor and does not file rebate paperwork, and K2 does not file town permits. Homeowners can apply for the rebate through a participating contractor or directly with PSEG Long Island, so confirm the current process at psegliny.com and the permit requirements with your building department.

Book Oil to Heat Pump Conversion With K2

Call or text (631) 414-7141 any time, or send the form and we will call you back to schedule. You get the cause and the price before any work starts. Financing is available through Rheem KwikComfort, with credit provided by Synchrony Bank, subject to credit approval.

Call (631) 414-7141 Text us Request service