Boiler Repair & HVAC in Westchester, Westchester

No heat is not a 'next week' problem. We diagnose, repair and replace boilers across Brooklyn and Queens: steam, hot water, high-efficiency combi, and hydronic HVAC systems including fan coils and radiant. No-heat calls get answered after hours.

Half of Westchester County's homes were built before 1960, with the greatest density of that stock concentrated in the southern tier — Yonkers, Mount Vernon, New Rochelle, and White Plains — where pre-war apartments and early post-war brick colonials dominate. Further inland, the 1950s and 1960s suburban expansion produced the Cape Cods, split-levels, and brick-veneer colonials that define towns like Greenburgh, Hartsdale, and Ardsley; most of these homes originally ran on oil-fired boilers or forced-air furnaces, with galvanized supply in the earliest builds transitioning to copper for post-1950 construction. Older homes in towns like Bronxville and Rye commonly have aging galvanized supply showing reduced flow and corrosion, while the large pre-war apartment buildings in the denser southern communities carry the same steam-heat infrastructure we work on constantly in the Bronx and Manhattan. We serve Westchester for boiler replacements, oil-to-gas conversions, supply re-pipes, and HVAC mechanical work across the full range of building types and eras.

Westchester 1950s suburban colonial oil to gas boiler conversion full scope

Oil-to-gas boiler conversion in Westchester County's 1950s brick-veneer colonials and Cape Cods follows a scope that includes removing the oil boiler, removing or decommissioning the oil storage tank, installing a new gas boiler, running new gas distribution from the Con Edison or Consolidated Edison gas service, and converting all controls and safety systems. Westchester County has its own permit and inspection requirements separate from NYC — work is filed with the municipal building department of the specific town or city where the property is located (Greenburgh, White Plains, Hartsdale, Ardsley, etc.) rather than with any county-wide authority. The gas service extension from the street to the house requires a Con Edison service application with a total building gas load calculation, and in parts of Westchester that previously had oil-dominant heating infrastructure, the time to complete the street connection after application can run several weeks. We sequence Westchester oil-to-gas conversion projects to have the permit and utility applications in process before any demo work begins.

Westchester pre-war apartment building Mount Vernon or New Rochelle steam system diagnosis

The pre-war apartment buildings in Westchester's southern dense corridor — Mount Vernon and New Rochelle immediately north of the Bronx city line — have steam heating systems that are structurally identical to what we work on in the Bronx and Manhattan: one-pipe steam, original cast-iron radiators, basement boiler, galvanized or black-iron steam mains now 80-100 years old. Diagnosis of chronic steam problems in these buildings follows the same methodology: main vent assessment, steam main pitch survey, trap inspection, and near-boiler piping review. The key difference from NYC work is that permit filing and inspections go through the Mount Vernon or New Rochelle building department rather than NYC DOB, and the applicable code is the New York State Mechanical Code rather than NYC's locally modified version. We work regularly in Mount Vernon and New Rochelle's pre-war apartment stock and maintain active working relationships with the building departments in both cities.

Westchester 1960s split-level home radiant floor loop that stopped working cause and repair

Some of Westchester's 1960s split-level homes in communities like Greenburgh and Hartsdale were built with in-slab radiant hot water loops — an early hydronic system that used small-bore copper tubing embedded in the concrete slab, fed by an oil boiler in the basement. When these systems stop heating, the most common cause is either a pump failure in the circulation system, a loop that has lost pressure from a small pinhole leak in the embedded copper, or a zone valve that has seized closed. In-slab radiant repairs are constrained by the impossibility of accessing the tubing without cutting concrete — so if a pressure test confirms a leak in an embedded loop, the options are either to isolate and abandon the leaking loop and supplement with baseboard radiation, or to reline the loop with a smaller-diameter flexible insert. We pressure-test Westchester in-slab radiant systems as the first diagnostic step to distinguish between a no-flow problem (fixable without concrete cutting) and a leak problem (which requires a different decision).