Ductless Mini-Split Systems
in Long Island, NY
Ductless Mini-Split Systems in Long Island. Ductless mini-split installation & repair, no ducts needed for restaurants, retail & offices. Free quote today.
24/7 Emergency Service
Con Edison Rebates
5.0 Google & Yelp
Up to 12-Year Warranty
Long Island Additions Left Without Any Ductwork at All more than you think
Expanded Long Island homes leave new rooms outside the duct system, and available PSEG LI rebates make fixing that with a ductless mini-split more affordable than most homeowners expect.
Sunroom with no ducts
That added sunroom on your Long Island ranch never got a duct run, so it turns into a greenhouse no one can use all summer.
PSEG LI bills spike in August
Window units cooling several Long Island rooms run isolated and inefficient, and the combined draw stings on your PSEG bill.
Basement with no climate control
Your finished Long Island basement becomes summer storage because the ducts dead-end upstairs and no one will open the ceiling.
Window units left behind
Your Long Island block moved to multi-zone systems years ago, while dragging out window units means noise and poor efficiency.
OUR SERVICES
Mini-Split Installs on Long Island
Long Island additions and older homes without ducts are where mini-splits make the most sense. PSEG LI rebates can offset your cost — we help you claim them.
Single-Zone Mini-Split
One Room, Addition or Office
Long Island sunrooms and additions are the hardest rooms to heat or cool. We install a single-zone mini-split that handles it cleanly, and we help you apply for available PSEG LI rebates.
Multi-Zone Mini-Split System
Whole-Home Comfort, No Ducts
Older Long Island homes with baseboard heat or no central air are ideal candidates for multi-zone ductless. We design the full system and walk you through PSEG LI rebate eligibility upfront.
Commercial Ductless Systems
Shops, Server Rooms & Offices
Long Island shops, professional offices, and server rooms get precise, quiet cooling with commercial ductless units. We handle sizing, installation, and any applicable PSEG LI utility incentives.
TRUSTED PARTNERS
Brands We Work With
We install and service equipment from the world's leading HVAC and refrigeration manufacturers.
Daikin VRV multi-zone systems, FIT line ductless heat pumps, and Atmosphera air handlers — installed and serviced by Art HVAC's experienced Daikin installers. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Fujitsu Halcyon ductless mini-splits, Airstage VRF, and Cold Climate H-series heat pumps — installed and serviced by Art HVAC's experienced Fujitsu technicians. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Mitsubishi Electric M-Series and P-Series ductless mini-splits, Hyper-Heat (H2i) cold-climate heat pumps, and City Multi VRF — installed and serviced by Art HVAC's experienced technicians. Installed and serviced across Nassau and Suffolk County homes and businesses. 
LG Therma V air-to-water heat pumps, Multi V VRF, and Art Cool wall units — installed and serviced by Art HVAC. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Carrier Infinity series gas furnaces, Greenspeed heat pumps, central AC, and commercial rooftop units — installed and serviced by Art HVAC's experienced Carrier installers. Installed and serviced across Nassau and Suffolk County homes and businesses. 
York YXV variable-capacity heat pumps, Affinity series, and Sunline commercial RTUs — installed and serviced by Art HVAC's experienced technicians. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Heil Ion variable-speed gas furnaces, heat pumps, and central AC — Art HVAC delivers full design, install, and warranty service. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Trane XV20i variable-speed heat pumps, gas furnaces, and Voyager commercial rooftop units — installed and serviced by Art HVAC's experienced technicians. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Lennox Signature series heat pumps, SLP99V furnaces, and Solar-Ready inverter ACs — installed and serviced by Art HVAC's experienced Lennox installers. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Samsung Wind-Free wall and ceiling cassettes, DVM S VRF, and EHS air-to-water heat pumps — Art HVAC installs Samsung HVAC across residential and commercial sites. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Panasonic Aquarea air-to-water heat pumps, ETHEREA wall units, and Nanoe X air purification — Art HVAC handles Panasonic install, service, and warranty. Installed and serviced across Nassau and Suffolk County homes and businesses. 
Bosch IDS series inverter heat pumps, Greenstar gas boilers, and Climate 5000 ductless — installed and serviced by Art HVAC for residential and commercial projects. Installed and serviced across Nassau and Suffolk County homes and businesses. Long Island additions, sunrooms, and whole-home upgrades may qualify for PSEG LI rebates—we factor that into the design and quote from the start.
How We Install on Long Island
No hassle, no surprises. We handle everything so you can sit back and enjoy a perfectly climate-controlled space.
Home Visit & Zone Planning
Long Island additions and sunrooms frequently lack ductwork entirely. We measure the space, check the existing envelope, and find the shortest line-set path to the outdoor unit so the installation stays tidy and efficient.
System Design & Quote
We select PSEG LI rebate-eligible equipment for Long Island projects and include the rebate estimate in your written quote. You see the net cost, line-set routing plan, and condenser location before you commit.
Clean Mini-Split Installation
On Long Island homes we run line sets through walls where possible and use slim conduit on exterior runs. Penetrations are cored at minimum diameter and sealed with weatherproof foam and trim plates for a clean finish.
Testing & Walkthrough
Each Long Island installation ends with a full zone test covering refrigerant pressure, airflow, and thermostat response. We walk you through PSEG LI rebate submission, filter care, and your equipment warranty before leaving.
CLIENT TESTIMONIALS
Why Long Island Chooses ART HVAC
Real clients. Real jobs. Real results — not marketing copy.
Valerie Sergeyenko
Jun 2025
Samuel
Oct 2025
Stef Bloom
Jun 9
Phyllis Klein
Apr 2026
Ramesh D.
Oct 5
FAQ
Questions We Hear Every Day
Honest, engineer-level answers — no sales fluff.
What is a ductless hvac system? It's a heat-pump mini-split: an outdoor compressor paired with one or more wall-mounted indoor heads, connected by a small refrigerant line set. No ductwork needed. Long Island homeowners embrace them for sunroom additions, finished basements, and detached garages where extending existing ducts is impractical. PSEG Long Island's heat-pump rebate program and the federal 25C tax credit make ductless mini-splits particularly cost-effective for Nassau and Suffolk County residents.
How much of electric usage is contributes to hvac? Nationally, heating and cooling account for roughly 40–50% of home energy bills. A ductless mini-split dramatically cuts that share compared to electric resistance heat or an aging central system, because it moves heat rather than generating it — delivering 2–4 BTUs per BTU of electricity consumed. Long Island homeowners on PSEG LI's time-of-use rates can maximize savings by running their mini-split during off-peak hours when electricity is cheapest.
A diagnostic service call in Nassau and Suffolk counties typically runs $100–$175, applied toward any repair. Annual preventive maintenance visits — coil cleaning, refrigerant check, drain flush — average $150–$230 per head. Long Island's salt-air coastal environment accelerates outdoor coil corrosion, making annual service more important here than inland. A maintained ductless system runs more efficiently and lasts two to three years longer than a neglected one.
How much does it cost to install hvac in basement on Long Island? A ductless mini-split low-wall or ceiling-cassette unit for a Long Island basement typically runs $3,500–$5,500 installed. That includes the outdoor compressor, indoor head, refrigerant line set, and electrical work. No duct penetrations required — just a small hole for the line set. Basements in Nassau and Suffolk County homes are common project spaces, and a mini-split handles heating and cooling there independently of whatever system serves the main floors.
After-hours emergency calls in Nassau and Suffolk counties typically add a $150–$300 premium over standard diagnostic rates. Common emergencies — refrigerant leaks, failed capacitors, frozen coils — range from $300–$1,200 to repair. Long Island's summer humidity and winter temperature swings strain systems hardest. Annual preventive maintenance on your ductless mini-split is the most reliable way to avoid emergency service calls entirely.
How much does a high-end hvac diffuser cost? Premium architectural diffusers for ducted systems run $80–$400 each. Ductless mini-split systems don't use diffusers at all — airflow comes directly from the indoor head's motorized louvers, which adjust automatically or via remote. Long Island homeowners who want a more discreet look can opt for ceiling-cassette mini-split heads that blend into the ceiling plane, eliminating the visible wall unit while still delivering the efficiency and zone-control benefits of a ductless system.
Still have questions? Contact us
Looking to Upgrade Comfort in Your Long Island Home?
Get a Free Ductless Mini-Split Estimate.
We visit your Long Island home, assess additions or unconditioned spaces, and provide a clear zone plan and honest quote — including PSEG LI rebate assistance at no obligation.