Long Island Heat Pump Experts: Installation, Repair & Mini-Splits
A heat pump is one machine that heats your home in the winter and cools it in the summer, using electricity instead of burning fuel. Modern cold-climate heat pumps work down well below 0°F, which means they handle real Long Island winters without breaking a sweat. They also qualify for some of the largest residential energy rebates in New York's history.
All Island Comfort has been installing, servicing, and repairing residential heat pumps across Suffolk and Nassau Counties since 2004. We work on every major brand, including Mitsubishi, Daikin, Fujitsu, LG, Carrier, Trane, Lennox, and Bosch. We're certified installers for the major mini-split lines, which means installs are warranty-eligible and rebate-paperwork-friendly. We also handle the NYS Clean Heat application and all rebate documentation.
Heat pump acting up right now? Start with our heat pump blowing cold air guide. Half those calls turn out to be a false alarm, and the guide shows you the thermometer test that settles it.
- Heat Pump Installation (All Configurations)
- Heat Pump Repair (24/7 Emergency)
- Heat Pump Replacement & Upgrades
- Ductless Mini-Split Installation
- Central (Ducted) Heat Pump Systems
- Cold-Climate Heat Pump Installation
- Hybrid (Dual-Fuel) Heat Pump + Furnace Systems
- Multi-Zone Mini-Split Configurations
- Twice-Yearly Heat Pump Tune-Ups
- NYS Clean Heat & Rebate Paperwork
Call 631-591-2289 for a free in-home estimate or to talk through your project, or request a quote online.
Free Heat Pump Estimate & Rebate Review
We come out, do a real heat-loss calc, walk you through equipment options, and tell you exactly which rebates and incentives apply to your house.
Call 631-591-2289Types of Heat Pumps We Install & Service
Heat pumps come in a few configurations. The right choice for your Long Island home depends on whether you have ductwork, your fuel source today, and how the spaces are used. Here's what we install:
Ductless Mini-Split Heat Pumps
The most popular Long Island heat pump for additions, garages, basements, sunrooms, and homes without ductwork. An outdoor compressor connects via small refrigerant lines to one or more wall-mounted indoor air handlers. Each indoor unit is its own zone, so you can heat or cool only the rooms you use. Mitsubishi and Fujitsu cold-climate mini-splits are extremely common here. See our full ductless mini-splits page for unit styles, repair symptoms, and sizing.
Central (Ducted) Heat Pumps
Uses your home's existing ductwork. Replaces both your furnace and central AC with a single system. Best for homes that already have central forced-air heat or AC. We size the unit, modify ductwork as needed, and integrate a smart thermostat.
Cold-Climate Heat Pumps (CCHP)
The category to ask for if you're looking at heat pumps for the first time on Long Island. Cold-climate models maintain rated heating capacity down to about -5°F (and effective heat well below that). They're also what NYS Clean Heat rebates require for the highest incentive tiers.
Hybrid / Dual-Fuel Heat Pump Systems
Combines a heat pump with a backup gas or oil furnace. The heat pump handles most of the heating season at high efficiency. On the few coldest hours of the year, the system automatically switches to the furnace. A great fit for homeowners who want maximum efficiency without abandoning their existing furnace.
Multi-Zone Mini-Split Systems
One outdoor compressor running 2 to 8 indoor heads, each with its own thermostat. Ideal for whole-home conditioning without ducts: bedrooms, living areas, and bonus rooms each get their own controllable zone.
Air-to-Water (Hydronic) Heat Pumps
Instead of blowing warm air, these systems heat water for radiant floors, hydronic air handlers, low-temperature baseboard, and domestic hot water. The right choice for homes with boiler-based heating that want to go electric. We install SpacePak Solstice, Mitsubishi Ecodan, and other cold-climate hydronic systems. Full details on our air-to-water heat pumps page.
Heat Pump Repair
Heat pumps share parts and concepts with both heating and cooling systems, which means they have a few unique failure modes. Our experienced techs diagnose and fix any heat pump issue across Long Island, including:
- Heat Pump Not Heating
- Heat Pump Not Cooling
- Outdoor Unit Iced Over (Frozen)
- Defrost Cycle Not Working
- Refrigerant Leaks & Low Charge
- Failed Reversing Valve
- Compressor Won't Start
- Capacitor Failure
- Failed Outdoor Fan Motor
- Failed Indoor Blower or Air Handler
- Mini-Split Indoor Head Leaking Water
- Mini-Split Error Codes
- Communication / Wiring Faults
- Tripped Breaker or Disconnect
- Backup Heat Won't Kick In
- Smart Thermostat or Control Issues
- Strange Noises from Outdoor Unit
- Drainage Problems & Condensate Issues
Call 631-591-2289 any hour for same-day or emergency heat pump repair on Long Island.
"Our Mitsubishi mini-split iced over and stopped heating during the deep freeze in February. Tech showed up the next morning, replaced the defrost board and topped off refrigerant, and walked me through what to watch for. Heat back the same day."
Heat Pump Installation & Replacement
A heat pump install is more than just hanging an outdoor unit. Sizing matters more than with a furnace. Refrigerant line sizing, condensate drainage, electrical capacity, and indoor unit placement all affect how the system performs for the next 15 years.
Our installation process:
- Manual J heat-loss / heat-gain calculation
- System size selection (BTU, SEER2, HSPF2 ratings)
- Electrical capacity check and panel upgrade if needed
- Outdoor unit pad and clearance assessment
- Refrigerant line set routing and sizing
- Indoor unit placement and condensate routing
- Smart thermostat or wall controller setup
- Permit and inspection coordination
- NYS Clean Heat rebate paperwork
- Rebate documentation
- Full system commissioning and customer walk-through
Cost factors for a Long Island heat pump install:
- Type (Ducted, Ductless, Hybrid)
- Number of Zones / Indoor Heads
- BTU Capacity (Sized to Heat-Loss)
- Efficiency Rating (SEER2 / HSPF2)
- Brand & Model (Standard vs Cold-Climate)
- Electrical & Panel Work Required
- Existing Ductwork Modifications
- Permit & Inspection Fees
- Backup Heat / Hybrid Furnace Tie-In
- Available Rebates & Incentives
Most heat pump installs on Long Island net out at $5,000 to $20,000 before rebates, depending on size and configuration. After the NYS Clean Heat rebate through PSEG, the homeowner cost is often 20 to 40 percent lower.
NYS Clean Heat Rebates & 2026 Incentives
This is the single biggest reason to look at a heat pump on Long Island right now. Available incentives stack:
- NYS Clean Heat Rebate: $1,000 to $4,500+ per system depending on type and efficiency tier. Higher rebates for cold-climate models.
- Federal Tax Credit Update: The Section 25C credit (up to $2,000) ended for installations after December 31, 2025, so the 2026 savings case rests on utility rebates and manufacturer promotions.
- HEEHRA / IRA Income-Based Rebates: Income-eligible households may qualify for up to $8,000 toward heat pumps under the Inflation Reduction Act.
- Utility Rebates: PSEG and National Grid offer additional incentives in some cases.
We complete and submit the rebate paperwork as part of the project. You don't have to chase forms or wait for incentives to know what you're getting.
Annual & Bi-Annual Heat Pump Maintenance
Because a heat pump runs in both heating and cooling modes, it gets twice as much usage as a single-purpose furnace or AC. Twice-yearly tune-ups (spring before cooling, fall before heating) are the standard recommendation. Our heat pump tune-up includes:
- Refrigerant pressure and superheat/subcool check
- Detect and seal refrigerant leaks if found
- Clean indoor coils and air handler
- Clean outdoor coil (rinse fins, clear debris)
- Inspect and lubricate fan motors
- Test capacitors and contactors
- Verify defrost cycle operation
- Test reversing valve operation
- Check all electrical connections
- Inspect condensate drains and pumps
- Test smart thermostat or controller
- Verify backup heat operation
- Replace or wash filters
- Test airflow and temperature differentials
- Provide written report with current condition
Heat Pump Brands We Install & Service
We're certified installers for the major mini-split brands and we install ducted units from the major HVAC manufacturers as well. Brands we work on across Long Island:
- Mitsubishi Electric
- Daikin
- Fujitsu
- LG
- Samsung
- Carrier
- Trane
- Lennox
- Bryant
- Bosch
- Rheem
- Ruud
- Goodman
- American Standard
- Heil
- York
- Gree
- Coleman
Why Long Island Chooses Us for Heat Pumps
Heat pump work rewards experience more than almost any other HVAC project. Refrigerant handling, electrical work, controls integration, and rebate paperwork all need to be right. Long Island homeowners pick All Island Comfort because:
- Family-Owned in Wading River Since 2004
- NATE-Certified & EPA-608 Refrigerant Certified Techs
- Mitsubishi & Fujitsu Certified Mini-Split Installers
- Real Manual J Heat-Loss Calculations
- NYS Clean Heat Rebate Paperwork Handled
- Rebate Documentation Provided
- Up-Front Pricing in Writing
- 24/7 Emergency Repair
"They installed a 4-zone Mitsubishi mini-split system and walked us through the NYS Clean Heat rebate. Heat is more even than our old oil boiler ever was, AC is included, and the Clean Heat rebate took a serious bite out of the install cost."
How It Works: Three Easy Steps
- 1Call or Send a Photo
Tell us what you're trying to do (whole home, addition, mini-split for one room, replace existing AC). A photo of your panel or existing equipment speeds things up.
- 2Free In-Home Estimate & Rebate Review
We do a real heat-loss calc, walk through equipment options, show you the numbers (purchase, monthly operating cost, rebates) in writing.
- 3The Install Gets Done
Most ductless mini-split installs are 1 to 2 days. Whole-home ducted installs are 2 to 4 days. We pull permits, file rebate paperwork, and walk you through the smart thermostat before we leave.
Related Long Island Services
Heat pump projects often touch other parts of your HVAC system. Customers commonly book together: