Complete AC & Cooling Services for Long Island
LI Heating & Cooling provides full-service air conditioning repair, installation, and maintenance across Nassau and Suffolk County. Whether you need a fast same-day AC repair, a new central air system, or a ductless mini-split installed, our licensed technicians handle all makes and models.
Long Island's humid summers and coastal salt air create unique demands on cooling equipment. Salt air accelerates corrosion on condenser coils and fins, while high humidity increases compressor load. Our technicians understand these local factors and factor them into every diagnosis and installation recommendation.
From Carrier and Lennox to Goodman and Mitsubishi, we service all major AC brands. Our trucks carry common parts — capacitors, contactors, refrigerant, fan motors — to maximize same-day fix rates and get your home cool again as fast as possible.
How much does AC service cost on Long Island?
Long Island AC pricing in 2026 spans $89 diagnostics through $15,000+ new installations. Most repair calls resolve between $150 and $600. The table below summarizes typical Nassau and Suffolk County pricing:
| Service | Average Cost |
|---|---|
| Diagnostic Service Call | $89 – $150 |
| Common AC Repair (capacitor, contactor) | $150 – $400 |
| Refrigerant Recharge (R-410A) | $200 – $500 |
| AC Maintenance Tune-Up | $89 – $200 |
| Single-zone Mini-Split Install | $3,000 – $5,000 |
| Central AC Install (existing ducts) | $4,500 – $8,000 |
| Central AC + New Ductwork | $8,000 – $15,000 |
Authoritative cooling resources
- →U.S. Department of Energy — Central AC: SEER2 standards and sizing guidance.
- →NYSERDA Clean Heat: Long Island rebates for high-efficiency cooling and heat pump systems.
- →ENERGY STAR — Heating & Cooling: Certified equipment and annual savings estimates.