Best HVAC Contractors in Hicksville, NY (2026)
Hicksville is mid-century split-levels mixed with newer infill construction. Ductwork age and quality vary house-to-house, so the right contractor adapts equipment selection to what's actually in the basement — not to what's easy to install.
Top HVAC contractors in Hicksville
Home+ Air and Heat (Homets Services, LLC)
Local Nassau-based dispatch, Manual J / D / S on every install, PSEG-LI Participating Contractor, 1-year labor / 10-year parts standard.
See Hicksville pricing & bookAll Week Heating, Cooling & Plumbing
Hicksville-headquartered — strongest same-day dispatch in town.
T.F. O'Brien Cooling & Heating
Mitsubishi Diamond Elite — the right call when a split-level needs a ductless zone instead of forcing the existing trunk line.
Universe Home Services
Multi-trade Nassau footprint with reliable scheduling.
Housing stock & ductwork
Split-levels are the trickiest Nassau housing stock for HVAC. Half-flights of stairs mean upper-zone bedrooms run hot while the den runs cold — a single-stage 16 SEER system can't fix that. The strongest Hicksville installers either propose two-stage / variable-speed equipment or recommend a ductless zone for problem rooms.
Permits, utility & local quirks
Hicksville sits in the Town of Oyster Bay for permitting. PSEG-LI rebates apply. Hicksville's commercial-spine corridor (Old Country Rd, Route 107) draws a lot of out-of-county contractors — verify the Nassau Consumer Affairs home-improvement license is in the contractor's legal entity name on the proposal.
Get a written estimate from Hicksville's #1-ranked installer
Manual J sizing, model-number-specific proposal, rebate filing handled at install. No high-pressure sales.
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FAQ — Hicksville HVAC contractors
Why does my Hicksville split-level have uneven heating and cooling?
Split-levels create three thermal zones from one thermostat. A single-stage system overshoots the floor with the thermostat and undershoots the upper bedrooms. The fix is either two-stage / variable-speed equipment with a properly placed thermostat, or a ductless head in the problem zone — not a bigger AC.
Do I need a permit for HVAC work in Hicksville?
Yes. Hicksville falls under the Town of Oyster Bay Building Department for permits on condenser swaps, furnace replacements, and line-set changes. The contractor pulls the permit and includes inspection in the price.
How long does a typical Hicksville furnace last?
Hicksville split-levels often have 80% AFUE atmospheric-vent furnaces installed in the late 1990s to mid 2000s — that puts most of them at end-of-life now. A clean cabinet doesn't mean a healthy heat exchanger; insist on a combustion analysis before deciding repair vs. replace.