(516) 259-1191 (516) 345-3911 (516) 548-0911
    home+ — Home+ Air and Heat
    24/7 Emergency(516) 259-1191
    5.0(66 reviews)
    90-minute response guarantee

    24/7 Complete HVAC System Failure Emergency Service

    Full System Down? No Heat. No Cooling. No Airflow. We Fix It—Fast. When your entire HVAC system shuts down, it's a critical emergency, especially during extreme weather in Nassau County.

    24/7 Emergency Service Available
    90 minutes response time · 24/7/365 - All of Nassau County
    Emergency? Call Now

    Why Complete System Failures Happen

    Electrical or power failure

    One of the most common causes includes tripped breakers, blown fuses, failed control board, loose wiring, short circuits, burned-out transformer, or faulty disconnect switches. These conditions require expert handling for safety. Electrical failures can affect multiple components simultaneously, causing complete system shutdown.

    Furnace safety lockout

    Modern furnaces shut themselves down to prevent danger. Common lockout triggers include flame sensor failure, ignition system malfunction, gas supply interruption, blocked flue/exhaust, overheating limit switch triggered, frozen or clogged condensate drain, or defective pressure switch. If a furnace enters lockout mode, it won't restart until the underlying danger is fixed.

    Air conditioner / heat pump system failure

    Cooling failures often involve compressor failure, refrigerant leaks, frozen evaporator coils, failed capacitor or contactor, damaged blower motor, burned-out fan motor, control board issues, or clogged condensate line triggering float switch shutoff. When the compressor or major electrical component fails, the entire unit shuts down.

    Boiler system failure

    Boiler emergencies can cause a full heat outage. Common causes include low water pressure, failed circulator pump, ignition/thermocouple failure, airlock in the system, damaged expansion tank, frozen hydronic lines, or pressure relief valve activation. A boiler shutdown is always an urgent situation.

    Water damage-related shutoff

    Your HVAC system may shut down automatically when it detects water in the safety pan, clogged condensate line, frozen or ruptured pipes, flooding in the mechanical room, or failed condensate pump. This prevents electrical hazards and equipment damage.

    Thermostat or control failure

    When your thermostat fails, the entire system becomes non-functional. Issues include blown thermostat fuse, wiring failure, corrupt smart thermostat software, dead batteries, or incorrect control signals to HVAC system. We diagnose both thermostat and equipment side failures.

    Frozen system / ice blockage

    Ice anywhere in the system will cause a total shutdown: frozen coils, frozen mini-split outdoor unit, frozen refrigerant lines, or frozen condensate line. If ice is causing the failure, you need a professional thaw protocol—DIY thawing can destroy your compressor.

    Current Offers

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    EMERGENCY
    $50 OFF

    Emergency Service Fee

    Save $50 on any after-hours emergency HVAC service call. Available 24/7 across Nassau County.

    Always Available
    FIRST YEAR DEAL
    $7.99/mo

    Comfort Plan — First Year

    Just $7.99/mo billed annually for Year 1 (save $204 vs $24.99/mo). Includes waived diagnostic, 10% off repairs, and an annual tune-up.

    Exp. Limited Time
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    NEW CUSTOMERS
    $100 OFF

    First Repair Service

    New customers save $100 on any HVAC repair. Diagnostic is $199, credited toward the repair.

    Always Available

    When Your Entire HVAC System Shuts Down, It's More Than an Inconvenience—It's a Critical Emergency

    When your entire HVAC system shuts down—no heat, no cooling, no airflow, no thermostat response—it's more than an inconvenience. It's a critical emergency, especially during extreme weather in Nassau County. A complete system failure can be caused by electrical issues, furnace lockouts, boiler problems, refrigerant system failures, frozen lines, safety shutoffs, or major component breakdowns. These are issues that cannot wait. Our 24/7 Complete HVAC System Failure Emergency Service provides 90-minute response guarantee, no overtime or after-hours fees, fully stocked trucks for on-the-spot repairs, and licensed and insured technicians. A complete HVAC system failure means your entire heating or cooling system stops functioning, including no heat, no cooling, no airflow, system won't turn on, thermostat unresponsive, furnace/AC continually shuts off, system keeps tripping breakers, boiler not producing heat, heat pump completely non-functional, full system lockout due to safety shutdown, water leaks plus system shutdown, or burning/electrical/gas-smell shutoff events. This is an immediate emergency because system failures often happen due to serious mechanical, electrical, or safety-related problems. For other emergency situations, we also provide emergency heating repair and emergency AC repair services. If you detect a gas smell or your carbon monoxide alarm is beeping, this could indicate a dangerous CO leak—call us immediately for emergency carbon monoxide service. Don't wait—call us immediately.

    What We Do During a Complete System Failure Emergency

    Emergency safety check (gas leaks, carbon monoxide risks, water damage, electrical hazards)
    Complete system diagnostic (furnace, AC, boiler, heat pump, thermostat, electrical, refrigerant)
    Identify the root cause (electrical, control board, motor failure, safety lockout, gas supply, refrigerant)
    Immediate on-the-spot repair (capacitors, contactors, igniters, blower motors, thermostats, control boards)
    System reset and safe restart (reset system, perform safety tests, verify ignition, restore airflow)
    Preventive recommendations (surge protector installation, maintenance plan, system upgrades)
    24/7 emergency service
    90-minute response guarantee
    No overtime or after-hours fees
    Fully stocked trucks for on-the-spot repairs

    Why Choose Our Complete System Failure Emergency Service

    Rapid 90-minute emergency response - we arrive fast when your entire system is down
    Licensed, insured, certified technicians - full HVAC + heating + cooling + boiler expertise
    No overtime or after-hours fees - same fair rate 24/7, nights, weekends, holidays
    Fully stocked emergency trucks - most failures fixed in under 2 hours
    Complete system diagnostic - we identify all failure points, not just symptoms
    Immediate on-the-spot repair - capacitors, contactors, igniters, motors, control boards, refrigerant
    System reset and safe restart - we don't leave until your system is fully functioning
    Upfront pricing, no surprises - you know the cost before we start
    Safe, reliable repair every time - we ensure all systems are safe to operate
    Locally based - faster service times throughout Nassau County

    Our Simple Process

    From call to comfort in 6 easy steps

    1

    Emergency Safety Check

    We immediately inspect for gas leaks, carbon monoxide risks, water damage, electrical hazards, overheating components, and blocked vents/flue issues. Your family's safety is the priority. We ensure your home is safe before proceeding with diagnostics.

    2

    Complete System Diagnostic

    We evaluate furnace, AC, boiler, heat pump, thermostat, electrical supply, refrigerant system, air handlers and blowers, and outdoor unit operation. This is a full top-to-bottom diagnostic of the entire HVAC system to identify all failure points.

    3

    Identify the Root Cause

    We isolate the exact reason for failure: electrical, control board, motor failure, safety lockout, gas supply issue, refrigerant failure, ignition malfunction, blower motor burnout, pipe freeze, or pump failure. By pinpointing the root cause, we fix the problem in one visit whenever possible.

    4

    Immediate On-the-Spot Repair

    Our trucks carry capacitors, contactors, igniters, blower motors, thermostats, flame sensors, control boards, refrigerant, fuses, transformers, safety switches, and common boiler parts. Most complete failures can be fixed in under 2 hours using parts from our stocked trucks.

    5

    System Reset & Safe Restart

    After repair, we reset the system, perform safety tests, verify ignition and combustion, restore airflow, inspect refrigerant pressure, confirm thermostat control, and test heating/cooling performance. We do not leave until your system is fully functioning and safe.

    6

    Preventive Recommendations

    After the emergency is resolved, we may recommend surge protector installation, maintenance plan, thermostat upgrade, condensate line improvements, electrical corrections, or freeze protection. This ensures your system doesn't fail again.

    Why Nassau County Trusts Home+ Air & Heat

    Rapid 90-Minute Emergency Response

    We guarantee arrival within 90 minutes anywhere in Nassau County, 24/7/365. For complete system failures, every minute counts, especially during extreme weather. We respond immediately.

    Licensed, Insured, Certified Technicians

    Our technicians are fully licensed, insured, and certified with full HVAC + heating + cooling + boiler expertise. We can diagnose and repair complex multi-system failures that require broad expertise.

    No Overtime or After-Hours Fees

    Same fair rate day or night, weekends and holidays. Complete system failures don't wait for convenient times—we don't charge extra for responding when you need us most.

    Fully Stocked Emergency Trucks

    Our service trucks carry extensive parts inventory: capacitors, contactors, igniters, blower motors, thermostats, flame sensors, control boards, refrigerant, fuses, transformers, and more. Most failures fixed in under 2 hours.

    Full HVAC + Heating + Cooling + Boiler Expertise

    We're experts in all HVAC systems—furnaces, boilers, heat pumps, ACs, mini-splits, and hydronic systems. We can diagnose and repair any type of complete system failure.

    Upfront Pricing, No Surprises

    You know the cost before we start work. We provide transparent, upfront estimates with no fees. Your emergency shouldn't come with surprises.

    Transparent Pricing

    No fees. No surprises. Just honest service.

    Standard Emergency Repair

    $250-$850

    Most failures we repair same-visit

    • Multiple component repairs
    • Parts and labor included
    • System restoration
    • Complete testing
    • 90-day warranty
    • No overtime fees
    Get Free Quote

    Major System Failure Repair

    $850-$3,500+

    For serious failures requiring major component replacement

    • Compressor failure repair
    • Major control board failure
    • Boiler circulator pump replacement
    • Complex electrical rebuild
    • Heat pump defrost system failure
    • Financing available
    Get Free Quote

    Emergency diagnostic fee ($199) is credited toward repair. Final pricing depends on the specific failures and components requiring repair or replacement. We provide exact quotes before starting work. Same rate 24/7—no overtime fees. Financing available for major repairs.

    Flexible Financing Available

    Synchrony Bank

    Don't let budget concerns delay your comfort. We offer flexible financing options through Synchrony Bank to make upgrading your system affordable with low monthly payments.

    Quick approval
    0% interest options
    Flexible terms

    Save with Home+ Membership

    Starting at $24.99/month — 2 annual tune-ups, 10% off all services, and priority scheduling.

    No ContractsCancel Anytime
    View Home+ Plans

    Own a Commercial Property?

    Business+ plans start at $499/year — includes 2 rtu tune-ups, 10% off all services, and priority scheduling.

    No ContractsSatisfaction Guarantee
    View Business+ Plans

    What Our Customers Say

    Real reviews from real homeowners in Nassau County

    Selected from 52+ verified Google reviews

    "Our entire HVAC system went down during a heat wave. Both AC and heating were completely dead. They diagnosed a power surge that damaged multiple components, repaired everything, and had both systems working within 4 hours. Excellent emergency service!"

    BS
    Barbara Stevens
    Garden City, NY
    2024-07
    Complete System Failure Emergency

    "Lightning strike took out our entire HVAC system. They came out immediately, diagnosed all the damage, and restored both heating and cooling the same day. Provided temporary cooling while repairs were made. Outstanding service!"

    CM
    Charles Martinez
    Hempstead, NY
    2024-06
    Complete System Failure Emergency

    "Our system completely failed in the middle of winter. They arrived quickly, identified multiple component failures, and restored heating within hours. The technician was thorough and explained everything clearly. Very satisfied."

    PK
    Patricia Kim
    Mineola, NY
    2024-01
    Complete System Failure Emergency

    "Both our heating and cooling systems failed simultaneously. They diagnosed the root cause, repaired all components, and had everything working perfectly. Their comprehensive approach saved us from needing a complete replacement."

    RT
    Robert Taylor
    Westbury, NY
    2024-08
    Complete System Failure Emergency

    We Repair All Major HVAC System Brands

    Factory-trained technicians for all major HVAC manufacturers

    Trane logo
    TraneThe Apple of HVACFactory Authorized
    Mitsubishi Electric logo
    Mitsubishi ElectricGold Standard for DuctlessFactory Authorized
    Bosch logo
    BoschGerman Engineering ExcellencePreferred Partner
    Carrier logo
    CarrierThe OG of Air ConditioningFactory Authorized
    Lennox logo
    LennoxPremium High-EfficiencyFactory Authorized
    American Standard logo
    American StandardTrane's Smarter TwinPreferred Partner
    Rheem logo
    RheemReliable & Drama-FreePreferred Partner
    Bryant logo
    BryantCarrier's Quieter SiblingCertified
    Goodman logo
    GoodmanHonest ValueCertified
    Ruud logo
    RuudRheem's Reliable TwinCertified
    Daikin logo
    DaikinWorld's Largest HVAC ManufacturerFactory Authorized
    LG logo
    LGSurprisingly LegitPreferred Partner

    Don't see your brand? We service all major manufacturers! Call us to confirm.

    Complete System Failure Across Nassau County

    Expert complete system failure in every neighborhood — click your city for local details

    Frequently Asked Questions

    Get answers to common questions about our services

    What should I do if my system is completely dead?

    Turn it off at the thermostat and breaker, and call us immediately. Don't attempt to restart a completely dead system—this can indicate serious electrical, gas, or safety issues that require professional diagnosis. We'll arrive within 90 minutes to assess and repair.

    Can a thermostat cause a full system failure?

    Yes. When your thermostat fails, the entire system becomes non-functional. Issues include blown thermostat fuse, wiring failure, corrupt smart thermostat software, dead batteries, or incorrect control signals to HVAC system. We diagnose both thermostat and equipment side failures.

    Why does my HVAC system keep tripping the breaker?

    This is almost always an electrical or compressor-related emergency. Tripped breakers can indicate short circuits, burned-out motors, compressor failure, or electrical overload. These require immediate professional attention to prevent further damage or safety hazards.

    What if the system can't be repaired?

    We offer same-day replacement options if needed. If your system cannot be economically repaired, we can often install a replacement system quickly. We help you choose the right system for your home and provide financing options.

    Can I fix a blown fuse myself?

    We strongly recommend against DIY electrical repairs. Blown fuses often indicate underlying electrical problems that need professional diagnosis. Attempting DIY repairs can cause further damage or create safety hazards.

    Do you repair all brands?

    Yes—furnaces, boilers, heat pumps, ACs, and mini-splits of every brand. We service all major HVAC manufacturers and can diagnose and repair any complete system failure regardless of brand.

    How fast can you restore my HVAC system?

    Most complete failures can be fixed in under 2 hours using parts from our stocked trucks. For complex failures requiring major component replacement, we work quickly to restore basic function first, then complete comprehensive repairs.

    What causes complete system failures?

    Common causes include electrical or power failure (tripped breakers, blown fuses, failed control board), furnace safety lockout, air conditioner/heat pump system failure, boiler system failure, water damage-related shutoff, thermostat or control failure, or frozen system/ice blockage. We diagnose and address all causes.

    Love Our Service? Share Your Experience!

    Help other Nassau County homeowners by leaving a quick Google review. Your feedback helps us serve you better!

    5 stars • 52 reviews

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    Don't Wait — A Complete System Failure Can Get Worse Fast

    A full system breakdown can quickly become dangerous or cause expensive damage. Call now and we'll arrive within 90 minutes. Fast. Reliable. Professional.

    Call Emergency Service Now
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