Boiler and furnace repair across Nassau County, from steam-era villages to gas-heated postwar blocks. 24/7 emergency dispatch.
A flat $189 service call covers diagnosis and the first hour of labor anywhere in Nassau County, and most repairs total $189–$350 including that visit; parts are billed separately. After-hours, weekend and holiday emergency rates apply. Full pricing detail lives in our Long Island heating repair cost guide.
Nassau developed in rings, and its heating systems tell the story. The incorporated villages nearest the city line filled in before the war, and thousands of those houses still heat with one-pipe steam: a cast-iron boiler in the basement, radiators upstairs, and a set of skills most HVAC companies never learned. In Williston Park and Cedarhurst we routinely find steam boilers on their second or third burner, low-water cutoffs that have never been flushed, and air vents painted shut decades ago. Steam is a specialty on our bench, not an afterthought — see our steam heat and radiator service for the full scope.
We work on all major boiler brands, including Weil-McLain, Burnham, Peerless, Utica and Slant/Fin, and our trucks carry Gorton and Hoffman vents because a banging steam main at 2 a.m. should not wait for a parts order. Natural gas from National Grid is the dominant fuel across the county, so most of these boilers fire on gas, with a shrinking minority of oil systems holding on near the North Shore.
A single county page cannot do justice to how differently Nassau heats from shore to shore, which is why we maintain dedicated coverage for each sub-region. The North Shore keeps its older estate housing and oil-fired equipment; central Nassau is defined by Levitt-era capes and first-generation gas systems; and the South Shore of Nassau brings flood zones and elevated equipment into the picture. Between those extremes sit mid-century hamlets like Carle Place, where a forced-air furnace from the 1990s and a hot-water baseboard boiler can stand on opposite sides of the same street.
Whatever the block, the two system types we open most in Nassau are gas-fired steam boilers in the prewar villages and gas warm-air furnaces in everything built after. The ENERGY STAR program pegs typical furnace life at 15–30 years with maintenance, and Nassau holds some of Long Island's oldest housing, so a large share of the equipment we see is playing in the second half of that range.
Nassau's dense road grid works in your favor when the heat quits: our technicians can usually reach any point in the county without the long East End drives Suffolk calls involve, so same-day service is typical and no-heat emergencies move to the front of the schedule. The phone is answered live around the clock, every day of the season, because winter on Long Island does not schedule its breakdowns for business hours. If you are anywhere in Nassau — the towns above are examples, not limits — call once and we take it from the boiler room forward.
Yes. Every hamlet and village in the county is inside our regular routing, with Carle Place, Williston Park and Cedarhurst among the communities we visit most. For details on your part of the county, see the North Shore, central Nassau and South Shore Nassau pages.
Because it predates forced-air heating. Homes built before roughly 1940 in Nassau's older villages were piped for one-pipe steam, and the systems were durable enough that many never got replaced. Kept maintained, steam remains a comfortable and quiet way to heat.
Natural gas dominates. National Grid mains reach nearly every Nassau street, and most homes converted from oil decades ago. Oil survives mainly in older North Shore properties, which is why our countywide trucks still carry oil burner parts.
Same-day service is typical, and confirmed no-heat emergencies are prioritized ahead of routine work. We give you a realistic arrival window when you call rather than a promise we cannot keep.
National Grid owns the gas up to your meter; everything after it, including the furnace or boiler, is the homeowner's equipment. If we find a supply or meter issue we will tell you to call the utility, and if the problem is your equipment, we fix it on the spot where possible.
Multiply the system's age by the repair cost; past $5,000, replacement usually wins. Replacement estimates are free, and we will give you both numbers honestly so the arithmetic is yours to judge.
Levitt-era homes and gas conversions.
Steam and estate housing along the Sound.
Flood-zone systems and post-Sandy replacements.
Every Long Island town we cover, listed by county.
Same-day dispatch across Nassau and Suffolk County. Talk to a real person now.