# Long Island HVAC Repair — HVAC Service Across Long Island, Same-Day Most Days > Long Island HVAC Repair is a fully insured residential HVAC contractor headquartered at 25 Knoll Ln, Levittown, NY 11756. We provide repair, installation, and maintenance for AC, heating, mini-splits, heat pumps, boilers, and water heaters within a 9-mile service radius covering most of central Nassau County, with same-day service most days. ## Contact - Website: https://longislandhvacrepair.com - Phone: (516) 667-0911 - Email: service@longislandhvacrepair.com - Address: 25 Knoll Ln, Levittown, NY 11756 - Hours: Open 24 hours, 7 days a week, including emergency dispatch ## Services - AC repair and installation (central AC, condenser/coil replacement, refrigerant) - Furnace repair and installation (gas, oil, high-efficiency) - Boiler repair and installation (steam, hot water, combi) - Heat pump installation (cold-climate, ducted, ductless) - Ductless mini-split installation (single & multi-zone) - Water heater installation (tank, tankless) - Whole-home standby generator installation (Generac, Kohler, Cummins) - Seasonal tune-ups and preventive maintenance - 24/7 emergency no-heat / no-cool service ## Service Area (9-mile radius from Levittown HQ) Levittown, Wantagh, Bethpage, Hicksville, Plainview, Seaford, Massapequa, Massapequa Park, Farmingdale, Old Bethpage, North Massapequa, North Bellmore, Bellmore, Merrick, East Meadow, Westbury, Salisbury, Uniondale, Hempstead, Garden City, Mineola, New Hyde Park, Franklin Square, Elmont, Floral Park, Carle Place, Jericho, Syosset, Woodbury. ## Equipment Brands We Service Carrier, Trane, Lennox, Rheem, Ruud, Goodman, Amana, Bryant, York, American Standard, Mitsubishi Electric, Daikin, Fujitsu, LG, Weil-McLain, Burnham, Lochinvar, Navien, Bradford White, A.O. Smith, Rinnai. ## Credentials & Trust - Fully insured - EPA 608 certified technicians - Background-checked crews - Current insurance and certification documentation provided on request before work begins - Install labor warranty up to 10 years depending on the package - Flexible Synchrony Home financing — promotional offers available, full terms in writing before you sign ## Rebate Programs (eligibility set by each program) - PSEG Long Island rebates (up to $1,000 on qualifying high-efficiency AC and heat pumps) - NYSERDA programs ($400–$1,200 on cold-climate heat pumps) ## Pricing Philosophy Upfront flat-rate pricing on every job. Free in-home estimates for installations. Diagnostic fees disclosed before dispatch. ## Pages - [Home](/): Long Island's HVAC repair, installation, and maintenance company, with same-day service usually available. - [All Services](/services): Full list of AC, heating, furnace, boiler, heat pump, mini-split, and water heater services. - [Service Areas](/service-areas): Towns we serve within a 9-mile radius of Levittown, NY. - [About](/about): Company background, insurance, and technician credentials. - [Reviews](/reviews): Verified customer reviews from Long Island homeowners. - [Book Online](/book): Schedule a service or free estimate appointment. - [Contact](/contact): Phone, email, and service request form. - [Resources](/resources): Homeowner guides on HVAC repair, replacement, and rebates. - [2026 HVAC Pricing](/pricing): Installed 2026 price ranges on Long Island for central AC, furnaces, boilers, mini-splits, water heaters, repairs, and tune-ups, plus the factors that move each range. - [Homeowner Tools](/tools): Hub for free Long Island HVAC calculators and the guides that pair with them. - [AC Size Calculator](/tools/ac-size-calculator): Free tool estimating AC tonnage, BTU, and 2026 installed cost bands for Long Island homes. - [Repair or Replace Calculator](/tools/repair-or-replace-calculator): Scores a system by age, refrigerant, repair quote, and comfort to recommend repair vs. replacement with 2026 cost bands. - [Rebates & Financing](/rebates-financing): PSEG Long Island and NYSERDA rebate programs plus Synchrony financing. - [Indoor Air Quality](/solutions/indoor-air-quality): Filtration, humidification, and ventilation solutions. - [Zoned Comfort](/solutions/zoned-comfort): Multi-zone ductless and ducted comfort systems. ## Services - [AC Repair](/services/ac-repair): Same-day central AC diagnostics and repair most days. - [AC Installation](/services/ac-installation): Central AC replacement and new installs. - [AC Maintenance](/services/ac-maintenance): Seasonal tune-ups and preventive service. - [Furnace Repair](/services/furnace-repair): Gas, oil, and high-efficiency furnace repair. - [Furnace Installation](/services/furnace-installation): High-efficiency furnace replacement. - [Boiler Services](/services/boiler-services): Steam, hot water, and combi boiler repair and installation. - [Heat Pump Installation](/services/heat-pump-installation): Cold-climate and ductless heat pump installs. - [Mini-Split Installation](/services/mini-split-installation): Single- and multi-zone ductless systems. - [Water Heater Installation](/services/water-heater-installation): Tank and tankless water heaters. - [Heating Services](/services/heating-services): Furnace, boiler and heat pump repair across Nassau and Western Suffolk. - [Emergency HVAC Repair](/services/emergency-hvac-repair): 24/7 no-heat and no-cool dispatch. - [Whole-Home Generator Installation](/services/generator-installation): Automatic standby generators sized by load calculation, with gas line and transfer switch. ## Service Areas by Town Each town page covers local housing stock, pricing and response times; 33 of them also have service-specific pages beneath them (e.g. /service-areas/wantagh/ac-repair). - [Babylon](/service-areas/babylon): Western Suffolk service — just over the line. Service-specific pages: ac-installation. - [Baldwin](/service-areas/baldwin): Same-day service most days across Baldwin. Service-specific pages: ac-repair. - [Bellmore](/service-areas/bellmore): Same-day appointments available in Bellmore. Service-specific pages: ac-installation. - [Bethpage](/service-areas/bethpage): Furnace & central air specialists in Bethpage. Service-specific pages: ac-installation, ac-repair. - [Deer Park](/service-areas/deer-park): Quick response into Deer Park. Service-specific pages: ac-repair. - [East Meadow](/service-areas/east-meadow): All-system HVAC service in East Meadow. Service-specific pages: ac-installation, ac-maintenance, ac-repair, furnace-repair. - [Farmingdale](/service-areas/farmingdale): All brands serviced across Farmingdale. Service-specific pages: ac-installation. - [Freeport](/service-areas/freeport): South-shore HVAC experts in Freeport. Service-specific pages: ac-repair. - [Garden City](/service-areas/garden-city): Historic-home HVAC specialists in Garden City. Service-specific pages: ac-installation. - [Hempstead](/service-areas/hempstead): Affordable, honest HVAC service in Hempstead. Service-specific pages: ac-repair. - [Hicksville](/service-areas/hicksville): Same-day service most days throughout Hicksville. Service-specific pages: ac-installation, ac-repair, water-heater-installation. - [Jericho](/service-areas/jericho): Premium service for Jericho homes. Service-specific pages: mini-split-installation. - [Levittown](/service-areas/levittown): Our hometown — based right on Knoll Ln. Service-specific pages: ac-installation, ac-repair, emergency-hvac-repair, furnace-repair, mini-split-installation. - [Lindenhurst](/service-areas/lindenhurst): Lindenhurst HVAC service — Suffolk's western edge. Service-specific pages: ac-repair. - [Massapequa](/service-areas/massapequa): Same-day HVAC service most days across Massapequa. Service-specific pages: furnace-repair. - [Massapequa Park](/service-areas/massapequa-park): Local HVAC service in Massapequa Park. Service-specific pages: ac-installation. - [Merrick](/service-areas/merrick): Reliable HVAC service throughout Merrick. Service-specific pages: ac-installation, ac-repair. - [Mineola](/service-areas/mineola): Fast local service throughout Mineola. Service-specific pages: ac-repair. - [North Bellmore](/service-areas/north-bellmore): Fast response in North Bellmore. Service-specific pages: ac-repair. - [North Massapequa](/service-areas/north-massapequa): Trusted North Massapequa HVAC — furnace, boiler, AC. Service-specific pages: ac-repair. - [North Wantagh](/service-areas/north-wantagh): Same-day HVAC service most days across North Wantagh. Service-specific pages: ac-installation, ac-repair. - [Old Bethpage](/service-areas/old-bethpage): Residential HVAC specialists in Old Bethpage. Service-specific pages: furnace-repair. - [Oyster Bay](/service-areas/oyster-bay): North Shore HVAC service in Oyster Bay. Service-specific pages: mini-split-installation. - [Plainedge](/service-areas/plainedge): Full-service HVAC in Plainedge — 6 minutes from HQ. Service-specific pages: furnace-installation. - [Plainview](/service-areas/plainview): Premium installs & high-efficiency systems in Plainview. Service-specific pages: ac-repair, mini-split-installation. - [Rockville Centre](/service-areas/rockville-centre): Premium HVAC for Rockville Centre homes. Service-specific pages: ac-repair. - [Salisbury](/service-areas/salisbury): Quick-response zone — Salisbury, NY. Service-specific pages: ac-repair. - [Seaford](/service-areas/seaford): Quick response across Seaford — 8 minutes out. Service-specific pages: ac-maintenance, ac-repair. - [South Farmingdale](/service-areas/south-farmingdale): Local HVAC pros in South Farmingdale. - [Syosset](/service-areas/syosset): High-efficiency systems for Syosset homes. Service-specific pages: mini-split-installation. - [Uniondale](/service-areas/uniondale): Reliable local HVAC service in Uniondale. Service-specific pages: ac-repair. - [Wantagh](/service-areas/wantagh): South-shore comfort, 5 minutes south of HQ. Service-specific pages: ac-installation, ac-repair. - [West Hempstead](/service-areas/west-hempstead): Trusted HVAC techs in West Hempstead. Service-specific pages: ac-installation. - [Westbury](/service-areas/westbury): All major brands serviced in Westbury. Service-specific pages: ac-repair. - [Williston Park](/service-areas/williston-park): Local HVAC experts in Williston Park. - [Wyandanch](/service-areas/wyandanch): Affordable, reliable HVAC in Wyandanch. ## Guides - [AC Repair vs Replacement](/resources/ac-repair-vs-replacement): When to fix vs replace your AC. - [Heat Pump Cost on Long Island](/resources/heat-pump-cost-long-island): Real installed pricing and rebate math. - [PSEG & NYSERDA Rebates Explained](/resources/pseg-nyserda-hvac-rebates-explained): How to stack Long Island HVAC rebates. - [Seasonal HVAC Maintenance Checklist](/resources/seasonal-hvac-maintenance-checklist): Homeowner tune-up steps. - [AC Blowing Warm Air — Causes](/resources/ac-blowing-warm-air-causes): Troubleshooting no-cool problems. - [SEER2 Explained](/blog/seer2-explained-long-island): What efficiency rating a Long Island home should buy, by tier and cost.