Best Boiler Contractors in Hicksville, NY (2026)
Hicksville's mid-century split-levels and older infill housing produce two very different boiler jobs on the same street: multi-level hot-water baseboard that needs real zoning, and surviving one-pipe steam that needs correct near-boiler piping. Contractors who treat both as a simple swap create the uneven-heat complaints homeowners live with for years.
What Hicksville boiler systems look like
Dominant distribution: Mixed hot-water baseboard with pockets of one-pipe steam. Because of that, the most useful question to ask any Hicksville contractor is how the replacement size was determined and what happens to the existing piping — not which brand they carry.
Boiler contractors serving Hicksville
Home+ Air and Heat (Homets Services, LLC)
Steam and hydronic work quoted from measured radiation (EDR) rather than the old boiler's nameplate, near-boiler piping rebuilt to the manufacturer's printed diagram, combustion analysis and a written startup report on every install, plus labor coverage of 1–10 years depending on Home+ package.
See boiler installation scopeAll Week Heating, Cooling & Plumbing
Hicksville-headquartered, strong local no-heat scheduling coverage.
Universe Home Services
Multi-trade reach when a boiler project includes gas piping or panel work.
T.F. O'Brien Cooling & Heating
Useful comparison when the household is weighing hydronic replacement against a ductless or hybrid path.
Housing stock & distribution
Split-level hot-water systems are usually piped as one zone for three thermal levels, so the upper bedrooms starve while the lower den overheats. The fix is zoning and correct circulator and head selection, not a larger boiler. Where steam survives, the header and equalizer piping is what determines dry steam and even heat, and it is the part most often reused when it should be rebuilt.
Permits, venting & local quirks
Hicksville permits go through the Town of Oyster Bay. Because commercial corridors here draw contractors from outside the county, confirm the Nassau County Consumer Affairs home-improvement license matches the legal entity printed on the proposal, not a marketing name.
Get a written boiler estimate in Hicksville
Sizing basis stated in writing, exact model number, near-boiler piping plan, venting method, permits handled, and a combustion and startup report at completion.
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FAQ — Hicksville boiler contractors
Why are my Hicksville upstairs bedrooms cold with a working boiler?
A split-level piped as a single zone cannot satisfy three levels from one thermostat. The boiler shuts off when the thermostat's level is satisfied, leaving the upper rooms short. Correct answers are zoning the loop, verifying circulator head against the piping, and balancing the baseboard — not installing a bigger boiler.
Should the old near-boiler piping be reused on a steam replacement?
Almost never. Steam boiler manufacturers publish a specific header, riser, and equalizer arrangement, and reusing undersized existing piping is the most common cause of wet steam, banging, and uneven heat after a new install. Ask to see the piping diagram the installer will follow.
Do I need a permit for a Hicksville boiler replacement?
Yes, in most cases. Hicksville falls under the Town of Oyster Bay Building Department, and permits are expected when the boiler, venting, or gas piping changes. Permit filing and inspection should be named in the written scope.