Efficient heating and cooling in one system
Heat pump installation, oil conversions, ductless mini-splits, and repairs for homes across Nassau and Suffolk County. Start with a free estimate.
GreenShield Heat Pumps helps Long Island homeowners replace aging heating and cooling equipment with efficient, properly sized heat pump systems. We install cold-climate air-source heat pumps, ductless mini-split systems, and heat pump water heaters, and we handle complete oil-to-heat-pump conversions for families ready to move past fuel deliveries, tank worries, and separate air-conditioning equipment.
Every house is different. A 1930s colonial in Garden City has different heating and cooling loads than a South Shore split-level in Islip, a Huntington cottage, or a larger multi-zone home in Smithtown. Before we recommend anything, we look at the house itself: the existing equipment, the electrical service, the ductwork, the insulation, the rooms that never feel right, and how your family actually uses the space.
Then we explain your options in plain language. You get a clear written estimate, honest guidance on system sizing and cold-weather performance, and an installation plan built around steady comfort rather than oversized equipment or one-size-fits-all packages.
If your current system is failing, your oil bills keep climbing, or certain rooms are always too hot or too cold, call (516) 874-2060 and tell us what is going on. We will help you figure out the right next step.
From complete oil conversions to seasonal tune-ups, our work is focused on one thing: heat pump systems that perform through Long Island winters and humid summers.
Replace oil heat with a cleaner, all-electric heat pump system designed for dependable Long Island comfort.
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Add efficient zoned heating and cooling without extending bulky ductwork through your home.
Explore ductless mini-split installation →
Restore dependable heating or cooling with focused diagnostics and clear repair recommendations.
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Keep your heat pump clean, efficient, and ready for year-round operation with seasonal service.
Explore heat pump maintenance & tune-up →
Heat and cool your whole home with one efficient central system built for Long Island winters.
Explore air-source heat pump installation →
Produce everyday hot water with efficient heat pump technology instead of costly electric resistance.
Explore heat pump water heater installation →We are not tied to a single manufacturer. We match the brand and model to your home, your budget, and the winter performance you need, then support the equipment for the long run. These are the heat pump brands Long Island homeowners ask us about most.
Cold-climate ductless and ducted systems, including Hyper-Heating H2i models in the M-Series and P-Series lines that hold heating capacity in single-digit temperatures.
Quiet inverter-driven ducted systems such as the IDS 2.0 and IDS Premium, a popular pick when replacing a conventional furnace and AC with one unit.
Durable central systems from the XR series up to the variable-speed XV18 and XV19, backed by one of the best-known names in home comfort.
The space-saving Daikin FIT side-discharge system plus a deep ductless lineup, from single-room Aurora units to multi-zone setups.
Comfort and Performance series systems up to the Infinity 24 with Greenspeed intelligence for premium variable-speed efficiency.
Endeavor Line Classic and Prestige series heat pumps, along with the ProTerra hybrid heat pump water heaters we install alongside them.
Budget-friendly, widely serviced systems like the GSZ16 and inverter GSZC18, a practical fit when replacement cost is the priority.
Halcyon ductless singles and multi-zones plus Airstage systems, with strong low-temperature models for Long Island winters.
Merit and Elite series systems up to the SL25XPV, one of the most efficient variable-capacity heat pumps on the market.
Art Cool ductless units with low-profile styling and LGRED cold-climate technology, plus Multi V systems for larger multi-zone homes.
GreenShield Heat Pumps serves homeowners throughout Nassau and Suffolk counties, including Great Neck, Hempstead, Garden City, East Meadow, Hicksville, Huntington, Smithtown, Islip, Patchogue, and Riverhead. Our service area covers a wide range of home styles, from compact capes and older colonials to expanded ranches, waterfront properties, and larger multi-zone houses.
Local housing conditions matter when you are choosing a heat pump. Older insulation, limited duct space, additions built at different times, salt-air exposure near the shore, low basement ceilings, finished attics, and electrical panel capacity all affect the design. Our recommendations account for those details so the finished system works as one coordinated comfort plan. Call (516) 874-2060 to ask about service in your neighborhood.
Heat pumps are not an add-on service for us. Our work centers on heat pump installation, conversion, repair, and maintenance, so our recommendations stay focused on the technology you are considering.
We look beyond the equipment model. Room use, insulation, windows, duct conditions, electrical capacity, condensate drainage, and outdoor unit placement all shape the final recommendation.
We explain system types, sizing, operating expectations, and project scope before work begins. If we cannot give an exact number without seeing the house, we say so and schedule a free estimate.
Our installers protect floors and work areas, plan line-set routes carefully, and keep the project organized so the finished system performs well without making your house look like an afterthought.
A heat pump is a long-term home system. We provide maintenance and repair support, so you have a familiar local team to call whenever the system needs attention.
We work in Long Island homes every day and understand the mix of housing ages, construction styles, utility requirements, and comfort problems found across Nassau and Suffolk counties.
Yes. Modern cold-climate heat pumps provide dependable heating through typical Long Island winters when they are selected and sized correctly. The design should account for the home’s heat loss, insulation, air leakage, layout, and backup heat strategy.
Many homeowners can move from oil to an all-electric heat pump system. The project may involve new indoor equipment, outdoor units, electrical work, duct modifications, and decisions about the old boiler, oil tank, and domestic hot water. We review all of those pieces before recommending a complete oil to heat pump conversion.
Yes. A heat pump heats in winter and reverses operation to cool and dehumidify in summer, so one system handles both major comfort needs.
No. Ductless mini-splits can serve homes without ducts or target rooms that are difficult to reach. Homes with usable ductwork may be candidates for a central ducted heat pump instead.
A single-zone ductless project may take one or two working days, while a whole-home conversion can take several days or longer. Electrical changes, ductwork, equipment access, and the number of zones affect the schedule.
Most systems benefit from professional maintenance at least once a year. Homes with heavy year-round use, pets, high dust levels, or several indoor units may need more frequent filter cleaning and inspection.
It can, especially when replacing inefficient equipment or expensive oil heat, but savings vary. Home efficiency, thermostat habits, utility rates, equipment sizing, and the system being replaced all influence operating costs.
Tell us about your home, existing system, and comfort goals. Call (516) 874-2060 or request a free estimate online and we will schedule a visit and explain the next steps.
Ready to explore heat pumps for your home? Start with a clear, no-pressure conversation about your options, your house, and what a properly designed system would look like.