Furnace Repair Experts Serving Long Island
Your furnace is the heart of your home's heating system, and when it fails during a Long Island winter, you need fast, reliable service. LI Heating & Cooling provides expert furnace diagnosis, repair, and installation throughout Nassau and Suffolk County — with same-day service available and 24/7 emergency response. If your system just stopped working, our guide to why a Long Island furnace won't turn on walks through the most common causes homeowners can check before calling a technician.
We service all furnace types including high-efficiency gas furnaces, oil furnaces, dual-fuel systems, and forced air systems. Our licensed technicians are experienced with all major brands and carry common parts on every truck to maximize first-visit fix rates. Homeowners weighing repair versus replacement often compare pricing against boiler systems — see our full breakdown of boiler repair and replacement costs on Long Island if your home is on a hydronic setup.
Long Island homes have unique heating needs — from older oil-heated homes in established neighborhoods to new construction with high-efficiency gas systems. Our technicians understand the local market and can recommend the right solution for your home and budget. In central Suffolk, we're especially active in Centereach, where a mix of older and newer gas furnaces keeps our team busy through every winter.
24 Hour Furnace Repair on Long Island
When your furnace breaks down at 2 a.m. on the coldest night of the year, you need a team that answers the phone and shows up fast. LI Heating & Cooling provides around-the-clock emergency furnace service across all of Long Island, including nights, weekends, and holidays. Our licensed technicians are dispatched from locations throughout Nassau and Suffolk County, so response times stay short no matter when you call. We service all major brands — Carrier, Lennox, Trane, Rheem, York, Goodman, and more — and our trucks are stocked with the most common furnace parts to maximize same-visit repairs. Whether you have a gas furnace, oil furnace, or dual-fuel system, call (631) 612-6928 any time, day or night, for fast, reliable emergency furnace service.
Signs Your Furnace Needs Repair
- ✓No heat or insufficient heat
- ✓Furnace cycling on and off frequently (short cycling)
- ✓Unusual noises — banging, squealing, or rattling
- ✓Yellow or flickering pilot flame (should be blue)
- ✓Rising energy bills without increased usage
- ✓Carbon monoxide detector alerts
- ✓Uneven heating throughout your home
- ✓Furnace over 15 years old with recurring issues