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    Nassau County HVAC · Emergency Line

    HVAC Contractor in Nassau CountyLocal Repair & Installation

    Heating, cooling, boiler, and water-heater service across covered Nassau County ZIP codes. Based in Jericho and rated 5/5 on Google.
    Call (516) 259-1191
    Google Rating
    5★
    Towns Served
    70
    Emergency Service
    By Phone
    Project Options
    Written
    Home+ HVAC technician servicing a central air conditioner outside a Nassau County Long Island homeEmergencyCalls

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    Jericho-based · Nassau County service

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    Looking for an HVAC company in Nassau County?

    Home+ Air & Heat is a local HVAC contractor based in Jericho and serving covered Nassau County ZIP codes. The team provides heating, cooling, boiler, water-heater, and indoor-air-quality service. The emergency phone line is available, dispatch confirms current scheduling, written options are provided before work is authorized, and the business holds a 5/5 Google rating.

    Last updated:

    What Happens When You Call

    No phone trees. No mystery pricing. Just a clear three-step path.

    1. 1. Call or request online

      Share the equipment issue and service address so coverage can be confirmed.

    2. 2. Confirm the visit

      Dispatch provides the available appointment window; timing varies with demand and location.

    3. 3. Review written options

      See the scope and price before deciding whether to repair or replace.

    Choose your path

    Need help right now?

    No heat, no cooling, water leak, or burning smell? Skip the form — we answer the phone.

    Call (516) 259-1191

    Planning a project?

    Replacing a system, scheduling a tune-up, or pricing an oil-to-gas conversion? Book a no-pressure visit at your convenience.

    A Local Nassau County HVAC Contractor Based in Jericho

    Nassau County homes are not like the rest of the country. Coastal humidity off the Long Island Sound and the Atlantic stresses cooling systems all summer long. Winter Nor'easters push older boilers and furnaces past their limits. And the housing stock — from pre-war Tudors in Garden City to post-war Levittown ranches to North Shore estates — means there is no single "right" HVAC system for the county.

    Home+ Air & Heat is based in Jericho and serves covered ZIP codes across Nassau County. Address coverage and the current appointment window are confirmed for each project.

    Heating in Nassau County

    Many older Nassau homes still use cast-iron oil or gas boilers. Available project scopes include steam and hot-water boiler repair, condensing-boiler replacement, gas-furnace installation, and oil-to-gas conversion evaluation. A replacement proposal should identify the sizing method and the fuel, venting, distribution, and utility responsibilities.

    Cooling in Nassau County

    Coastal humidity changes how AC should be sized and dehumidified. Central AC, cold-climate heat-pump, and ductless proposals should account for the home's load, airflow, drainage, low-temperature capacity, and site-specific salt exposure. Ask for the assumptions, matched-equipment data, and any coastal protection option in writing.

    Indoor air quality on Long Island

    Tight modern envelopes plus seasonal pollen and salt-air particulates put extra demand on filtration. Filtration, UV, fresh-air ventilation, and whole-home dehumidification options must be matched to the existing system's airflow, static-pressure allowance, controls, installation conditions, and maintenance needs.

    Warranties

    The applicable labor and manufacturer warranty terms should be identified in the written project scope before work begins.

    Nassau County Climate & What It Means for Your HVAC

    Nassau County summers are hot and humid, winters require dependable heating, and South Shore properties can face added salt-air exposure. Equipment sizing, low-temperature heat-pump capacity, and coastal-protection choices should be based on the home's load calculation, site conditions, and manufacturer data.

    • Hot + humid

      Summer load

    • Heating-critical

      Winter comfort

    • Site-specific

      Coastal exposure

    • Verify onsite

      Electrical capacity

    HVAC Problems Specific to Nassau County

    Coastal exposure and the mix of pre-war, post-war, and renovated homes create different equipment, ductwork, and electrical questions at each property.

    • Oil-to-gas conversions

      Many older Nassau homes still run oil. We scope the boiler or furnace change, gas-line coordination, chimney work, and oil-tank work as one project.

    • Aging cast-iron steam boilers

      Common in Garden City, Rockville Centre, and pre-war Long Beach homes. We service one-pipe and two-pipe steam, and quote modern condensing replacements when the math makes sense.

    • Salt-air corrosion on the South Shore

      South Shore properties can expose outdoor equipment to more salt and moisture. Equipment condition, coating options, clearances, and pad placement should be assessed onsite.

    • Coastal humidity overload

      Oversized AC equipment may satisfy temperature quickly without managing humidity well. Load calculations and appropriate staging or variable-speed options help match the home.

    • Undersized post-war ductwork

      Levittown, Hicksville, and Plainview ranches were built around small original ducts. Modern higher-CFM systems need rework or static-pressure-friendly equipment to perform as rated.

    • PSEG electrical capacity

      Heat-pump and other electrification projects may require a panel and service-capacity review. We identify the electrical scope before equipment selection is finalized.

    HVAC Repair and Installation Across Nassau County

    Heating, cooling, hot water, and indoor air quality — one local contractor for it all.

    Reviewed local service guides

    Find HVAC service information for your Nassau County town

    Start with a maintained city-and-service guide for local housing context, scope questions, and the correct repair or replacement path. Address coverage and appointment timing are confirmed by dispatch.

    AC repair by town

    Local cooling-diagnostic and repair guidance.

    AC installation by town

    Local replacement planning, sizing, and scope guidance.

    Furnace repair by town

    Local warm-air heating repair guidance.

    Boiler repair by town

    Local steam and hot-water boiler repair guidance.

    Mini-split installation by town

    Local ductless-system planning, placement, and installation guidance.

    Nassau County HVAC Questions, Answered

    How do I find a good HVAC contractor in Nassau County?

    Ask for the license number, proof of liability and workers' comp insurance, a Manual J load calculation before any install quote, and the labor warranty in writing. Home+ Air & Heat is a local Nassau County HVAC contractor covering covered Nassau County ZIP codes, with written pricing before work starts.

    Do you offer heating and furnace repair in Nassau County?

    Yes. We diagnose and repair gas and oil furnaces, steam and hot-water boilers, and heat pumps across covered Nassau County ZIP codes. You get a written diagnosis with repair options and a repair-versus-replace comparison before anything is authorized — no work happens on a verbal estimate.

    How fast can you get out for AC repair in Nassau County?

    No-cooling and no-heat calls in covered Nassau County ZIP codes go to dispatch first, and emergency lines are staffed outside business hours. Call (516) 259-1191 and dispatch confirms the next open arrival window for your address before you commit to anything.

    What does HVAC maintenance in Nassau County involve?

    An annual visit per system: heating in the fall, cooling in the spring. Nassau homes run a mix of cast-iron steam boilers, post-war ducted furnaces, and newer heat pumps, so the checklist changes with the system. We check combustion and safety, refrigerant charge, static pressure, drains, and electrical, then document what we found so replacement is planned rather than an emergency.

    Popular Nassau County services

    Heating repairFurnace repairFurnace service & tune-upAC repairBoiler repairHeat pump installationCentral AC installationHVAC maintenance plans

    Need someone today? Call (516) 259-1191 and dispatch confirms current availability for your address.

    Furnace Repair & Replacement in Nassau County

    Who does furnace repair in Nassau County?

    We do. Home+ Air & Heat repairs gas and oil furnaces across covered Nassau County ZIP codes, including no-heat calls after hours. A diagnostic visit gets you the written cause and a fixed repair price before any work begins, so nothing proceeds on a verbal estimate.

    What does furnace repair cost in Nassau County?

    The diagnostic fee covers the visit and testing, then the repair is quoted at a fixed price you approve first. Common Nassau County repairs run from an igniter, flame sensor, or pressure switch through inducer and blower motors, control boards, and gas valves — you see the number before we start.

    Do you handle furnace replacement and installation in Nassau County?

    Yes. Replacement and new installs across covered Nassau County ZIP codes start with a free in-home survey and a Manual J load calculation, not the old nameplate. You get itemized good, better, and best options with model numbers, the installed price, and the labor warranty in writing.

    Is my furnace worth repairing, or should I replace it?

    Past roughly 15 years, or when a cracked heat exchanger or repeated failures are involved, replacement usually costs less over the next five winters. We put the repair price and the replacement options side by side on the same visit, including any qualifying PSEG-LI Home Comfort heat pump rebate.

    What if my heat goes out overnight in Nassau County?

    Call (516) 259-1191 — no-heat calls in covered Nassau County ZIP codes reach a live dispatcher and emergency lines are staffed outside business hours. Dispatch confirms the next open arrival window for your address before you commit to anything.

    Furnace & heating services in Nassau County

    Furnace repairFurnace replacementFurnace installationFurnace tune-upBoiler repairEmergency heating repair

    No heat right now? Call (516) 259-1191 and dispatch confirms current availability for your address.

    Central Air, Ductless & Gas Heating in Nassau County

    What a central air unit costs, how replacement and ductless installs are scoped, and how forced hot air gas systems are serviced across covered Nassau County ZIP codes.

    How much does a central air unit cost in Nassau County?

    This guide uses a $6,500–$15,000 planning range for a replacement central air system in Nassau County, including the condenser, matched indoor coil, refrigerant lines, electrical, and startup. The written quote depends on tonnage, efficiency, duct condition, and access — you approve the number before any work is scheduled.

    Do you handle central air installation and AC replacement in Nassau County?

    Yes. Central AC installation and replacement across covered Nassau County ZIP codes starts with a free in-home survey and a Manual J load calculation instead of matching the old nameplate. You get itemized good, better, and best options with model numbers, the installed price, and the labor warranty in writing.

    What does air conditioning service cost in Nassau County?

    A diagnostic visit is $199 and covers the testing needed to find the cause; the repair is then quoted at a fixed price you approve first. A seasonal AC tune-up covers coil, refrigerant, airflow, drain, and electrical checks, and Home+ Comfort members pay no diagnostic fee.

    Can you install ductless mini splits in Nassau County homes without ducts?

    Yes. Ductless mini splits are the usual answer for additions, attics, converted garages, and older homes with no duct chase — roughly $3,500–$8,000 for a single zone, more for multi-zone. Placement, line-set routing, and condensate drainage are all confirmed on the survey before the quote.

    Do heat pumps work for heating in Nassau County?

    Cold-climate heat pumps hold capacity through Long Island winters and can either replace or back up a gas system. Qualifying projects can take the PSEG Long Island Home Comfort rebate — $4,000 standard, $5,000 for moderate income or a state Disadvantaged Community, or $7,500 for low income — when the system is sized at 100–120% of the Manual J heating load by a Participating Partner.

    Do you service forced hot air gas heating systems in Nassau County?

    Yes — forced hot air gas systems are the most common heating setup we service across covered Nassau County ZIP codes, alongside steam and hot-water boilers. Repair, annual service, and replacement all come with the diagnosis and the price in writing before work begins.

    Cooling & heating services in Nassau County

    Central AC installationAC repairAC tune-upMini-split installationHeat pump installationFurnace repair

    Want a central air or ductless quote? Call (516) 259-1191 and dispatch confirms the next available survey window for your address.

    Nassau County Installation, Repair & Hamlet Coverage

    What heating installation and repair costs in Nassau County, and which listed town covers the smaller hamlets and villages.

    How much does heater or furnace installation cost in Nassau County?

    A gas furnace replacement in Nassau County generally plans out at $3,500–$7,500 installed, and a full heating and cooling changeout runs higher because the coil, line set, and electrical are replaced with it. Every estimate is free, based on a Manual J load calculation rather than the old nameplate, and given to you in writing with the model numbers and labor warranty before anything is ordered.

    What does local heating repair cost in Nassau County?

    The diagnostic visit is $199 and covers the testing needed to identify the fault, then the repair is quoted at a fixed price you approve before work starts. Home+ Comfort members pay no diagnostic fee. Common Nassau repairs include ignitors, flame sensors, inducer motors, circulators, zone valves, and thermostat wiring faults.

    Do you install heat pumps in Nassau County homes?

    Yes — ducted and ductless cold-climate heat pumps both work in Nassau housing stock, including homes with steam heat that cannot use ducts. Qualifying projects can take the PSEG Long Island Home Comfort rebate of $4,000 standard, $5,000 for moderate income or a state Disadvantaged Community, or $7,500 for low income, when the system is sized at 100–120% of the Manual J heating load by a Participating Partner.

    Do you serve smaller Nassau hamlets and villages?

    Yes. Harbor Hills, Hillside Manor, Lake Success, New Cassel, Matinecock, Lido Beach, Inwood, and Jericho are all inside covered Nassau County ZIP codes and are served from the nearest listed town. Dispatch confirms the next available window for your exact address when you call.

    Hamlets and villages, and the covered town that serves them

    Not listed? Call (516) 259-1191 with your ZIP code and dispatch confirms coverage and the next available window.

    Pricing Transparency

    What HVAC Service Costs in Nassau County

    Planning ranges for Nassau County HVAC repairs commonly fall between $150–$850 on this guide. Central AC installs are shown at $6,500–$15,000, gas furnaces at $3,500–$7,500, and condensing boilers at $6,500–$15,000+. Oil-to-gas conversions are quoted from a written scope. Your written quote depends on the diagnosis, equipment, access, and code.

    Service Typical Nassau Range
    AC repair (diagnostic + most fixes) $150–$850
    Furnace repair $249–$449 standard · $449–$899 major
    Boiler repair Written quote after assessment
    Central AC installation $6,500–$15,000
    Gas furnace installation $3,500–$7,500
    Cold-climate heat pump install $8,900–$26,000
    Ductless mini-split (per zone) $3,500–$8,000
    Boiler replacement $6,500–$15,000+
    Oil-to-gas conversion (boiler) Written quote after assessment
    Water heater installation $2,000–$7,000
    Annual HVAC tune-up $299

    These planning ranges are not a project quote. Actual cost depends on tonnage or BTU, efficiency tier, accessibility, ductwork condition, electrical capacity, fuel, and code. Installation estimates are based on an in-home assessment.

    Popular Nassau County HVAC Searches

    Why Nassau County Homeowners Pick Home+

    • Insurance and credentials on request

      Ask the office for the credentials and insurance documentation applicable to your project.

    • Equipment Capability Confirmed

      Call to confirm support for the brand, model, fuel, and system type at the property.

    • Emergency Phone Line

      Call the number on this page; dispatch confirms the available appointment window.

    • Written Pricing

      Review the scope and price before authorizing repair or replacement work.

    • Written Warranty Terms

      Applicable labor and manufacturer warranty terms are documented with the installation.

    • Based in Jericho

      Local dispatch for covered Nassau County ZIP codes.

    Nassau County HVAC Financing

    Financing is subject to credit approval. Review current plans, APRs, terms, and qualification details on the financing page; offers may change.

    View Current Terms

    Nassau County ZIP Codes We Service

    76 ZIP codes across 70 Nassau County towns. If your ZIP isn't listed, call us — we likely still cover it.

    • 11001
    • 11003
    • 11010
    • 11020
    • 11021
    • 11022
    • 11023
    • 11024
    • 11026
    • 11027
    • 11030
    • 11040
    • 11042
    • 11050
    • 11096
    • 11501
    • 11507
    • 11509
    • 11510
    • 11514
    • 11516
    • 11518
    • 11520
    • 11530
    • 11531
    • 11542
    • 11545
    • 11548
    • 11549
    • 11550
    • 11551
    • 11552
    • 11553
    • 11554
    • 11557
    • 11558
    • 11559
    • 11560
    • 11561
    • 11563
    • 11565
    • 11566
    • 11568
    • 11570
    • 11571
    • 11572
    • 11575
    • 11576
    • 11577
    • 11579
    • 11580
    • 11581
    • 11582
    • 11590
    • 11596
    • 11598
    • 11599
    • 11709
    • 11710
    • 11714
    • 11735
    • 11753
    • 11756
    • 11758
    • 11762
    • 11771
    • 11783
    • 11791
    • 11793
    • 11797
    • 11801
    • 11802
    • 11803
    • 11815
    • 11819
    • 11853

    Nassau County HVAC Service Area Directory

    Select a community for local service details; address coverage is confirmed by dispatch.

    View Full Service Area Map

    Inside Our Top Nassau Neighborhoods

    What we actually do, town by town. Tap any neighborhood for the local HVAC page.

    Also Serving These Nassau Hamlets & Villages

    Home+ Air & Heat serves covered ZIP codes across the Towns of Hempstead, North Hempstead, and Oyster Bay. The directory below is geographic context, not a guarantee of availability at every address. Call dispatch to confirm coverage and timing for your project.

    Town of Hempstead

    • Roosevelt11575
    • Lakeview11552
    • Salisbury11590
    • Lido Beach11561
    • Point Lookout11569
    • Hewlett Harbor11557
    • Woodsburgh11598
    • South Valley Stream11581
    • North Valley Stream11580
    • Stewart Manor11530
    • Garden City South11530
    • Bellerose11001

    Town of North Hempstead

    • East Williston11596
    • North Hills11030
    • Searingtown11507
    • Herricks11040
    • Manorhaven11050
    • Munsey Park11030
    • Plandome11030
    • Flower Hill11030
    • Greenvale11548

    Town of Oyster Bay

    • Glenwood Landing11547
    • Mill Neck11765
    • Upper Brookville11771
    • Old Brookville11545
    • Lattingtown11560
    • Matinecock11560
    • Cove Neck11771
    • Centre Island11771
    • Old Bethpage11804

    Nassau County Coverage Map

    Based in Jericho and serving covered ZIP codes across Nassau County.

    Editor's pick

    Comparing HVAC contractors in Nassau?

    Compare local contractors using licensing, insurance, written scope, warranty terms, and current public reviews.

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    Nassau County HVAC FAQs

    Real answers about service, brands, and pricing on Long Island.

    How quickly can you schedule HVAC service in Nassau County?

    Call or submit a request for the current appointment window. The emergency phone line is available, but arrival time depends on technician availability, location, traffic, weather, and current demand.

    Do you offer emergency HVAC help near me in Nassau County?

    Call the number on this page for emergency HVAC help. Dispatch confirms whether and when a technician is available; if you smell gas or face an immediate safety hazard, leave the area and contact 911 or the utility first.

    What conditions should a Long Island HVAC proposal evaluate?

    The proposal should consider summer humidity, any site-specific salt exposure, the home's load, existing distribution, electrical capacity, fuel, access, and drainage. The relevant conditions vary by property.

    What parts of Nassau County do you service?

    Home+ Air & Heat serves covered ZIP codes across Nassau County, from the North Shore to the South Shore. Use the ZIP checker on this page or call dispatch to confirm your address.

    What is your response time in Nassau County?

    Dispatch confirms the available appointment window for your address. Timing depends on technician availability, location, traffic, weather, and current demand, with urgent no-heat and no-cooling calls triaged by the team.

    Do you quote oil-to-gas conversions on Long Island?

    Home+ evaluates oil-to-gas conversion projects. The written proposal should identify each party's responsibility for equipment, gas availability and utility work, tank work, chimney or venting, schedule conditions, and closeout.

    What credentials and insurance do you carry?

    Home+ is fully insured, and our technicians are EPA 608-certified and background-checked. We provide current insurance documentation on request before work begins — ask the office for the paperwork that applies to your project and jurisdiction.

    What HVAC brands do you install?

    Home+ commonly quotes Trane, Mitsubishi Electric, and Bosch equipment and services many common brands. The recommendation depends on the home's load, fuel, site conditions, service support, specifications, and written warranty terms.

    Do you offer financing?

    Financing is available subject to credit approval. Review the financing page for current plans, APRs, terms, and qualification details; offers may change.

    Do you work on commercial properties?

    We focus on residential and light-commercial systems throughout Nassau County. For larger commercial work, call (516) 259-1191 to discuss the project.

    How much does HVAC installation cost in Nassau County?

    This guide shows a $6,500–$15,000 planning range for many central AC replacements, but actual pricing depends on tonnage, efficiency, ductwork, access, electrical work, and code. Request a written quote after an in-home assessment.

    What size AC do I need for my Nassau County home?

    Sizing should account for the home's construction, insulation, windows, orientation, ductwork, and humidity load rather than square footage alone. Ask for the sizing method and assumptions with the written replacement proposal.

    Do you service Levittown and other post-war Nassau neighborhoods?

    Home+ serves covered ZIP codes in Levittown, Hicksville, Plainview, and other Nassau communities. Call dispatch to confirm the address. For a replacement, the assessment should inspect the actual attic access, ductwork, electrical capacity, additions, and equipment location at the property.

    When should I consider replacing my Nassau County boiler?

    Start with the boiler's condition, safety findings, repair history, parts availability, fuel and venting, distribution system, operating goals, and the complete replacement scope. Ask for diagnosis-led repair and replacement options instead of relying on age alone.

    Can an installation proposal include attic ductwork?

    Duct scope depends on access, condition, leakage, sizing, static pressure, airflow, and the proposed equipment. Ask the contractor to identify evaluated sections, included changes, exclusions, and testing in the written proposal.

    Need HVAC Help in Nassau County?

    Call now or request online service; dispatch will confirm coverage and the current appointment window.

    Call (516) 259-1191

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