Boiler Repair Experts on Long Island
Boilers are common in Long Island homes, particularly in older established neighborhoods throughout Nassau and Suffolk County. Whether you have a hot water hydronic system or an older steam boiler, our licensed technicians have the experience to diagnose and repair any issue quickly. Wondering what a typical fix actually costs? Our 2026 Long Island boiler repair and replacement cost guide breaks down the real numbers for the most common issues we see.
We service all boiler brands and fuel types — from classic oil-fired boilers to modern high-efficiency gas condensing boilers. Our trucks are stocked with common parts for Weil-McLain, Burnham, Peerless, Crown, Slant Fin, and other popular Long Island brands. We're particularly active in central Suffolk towns like Centereach, where a mix of older steam boilers and newer hydronic systems keeps our technicians on the road year-round.
Looking to convert from oil to gas? We specialize in oil-to-gas boiler conversions throughout Long Island. Converting can reduce your annual heating costs by 30–50% while improving system reliability and efficiency. For the full picture — including National Grid rebates, permit steps, and typical timelines — read our complete Long Island oil-to-gas conversion guide.
Common Boiler Problems We Fix
- ✓No heat or hot water from boiler
- ✓Boiler pressure too high or too low
- ✓Banging, kettling, or whistling noises
- ✓Radiators not heating evenly or at all
- ✓Boiler cycling on and off too frequently
- ✓Visible water leaks from boiler or pipes
- ✓Pilot light won't stay lit
- ✓Zone valves not opening or closing properly
- ✓Circulator pump failure
- ✓Expansion tank issues