JNJ Air provides top-tier central AC installation and replacement services in Long Island, backed by over 30 years of HVAC expertise. Based in Farmingdale, their certified technicians specialize in replacing rooftop units, ductless mini-splits, and central air systems—removing old equipment, evaluating your space, recommending new units, and performing precise installations 24/7.

Whether upgrading an aging system or installing central air for the first time, JNJ Air oversees every step, from sizing to thermostat setup, ensuring efficient operation. Serving Nassau and Suffolk Counties, they handle residential and commercial projects, offer free estimates and financing, and provide emergency support for reliable summer cooling.

JNJ Air also specializes in the installation and replacement of ductless mini split systems throughout Long Island, offering a flexible, energy-efficient solution for homes and businesses without traditional ductwork. These systems are perfect for spot cooling or heating individual rooms, additions, or converted spaces like garages and basements. JNJ Air’s experienced technicians help you select the right unit based on your space and usage needs, ensuring seamless installation with minimal disruption. Whether you're replacing an outdated mini split or installing a new system for enhanced climate control, JNJ Air provides expert guidance, precise workmanship, and reliable ongoing support. Their services are available across Nassau and Suffolk Counties, backed by free estimates, financing options, and 24/7 emergency service.

JNJ Air offers expert heat pump installation services on Long Island, providing homeowners and businesses with an energy-efficient solution for year-round comfort. Heat pumps are a smart choice for both heating and cooling, transferring heat rather than generating it—making them environmentally friendly and cost-effective. JNJ Air’s certified technicians assess your space to recommend the ideal system, whether it’s a ducted or ductless model, and handle the full installation process with precision and care. From sizing and system selection to electrical integration and thermostat setup, they ensure optimal performance and efficiency. Serving all of Nassau and Suffolk Counties, JNJ Air backs its installations with free estimates, financing options, and dependable 24/7 emergency support, making them a trusted partner for modern, sustainable climate control.

JNJ Air provides professional gas furnace installation services across Long Island, delivering dependable heating solutions tailored to each home or commercial space. Whether you're replacing an outdated unit or installing a furnace for the first time, their licensed technicians ensure every system is properly sized, vented, and safely connected for maximum efficiency and comfort. JNJ Air works with leading furnace brands to offer high-performance models that provide consistent warmth while helping reduce energy costs. From initial consultation and system selection to complete installation and testing, they manage the entire process with attention to detail and code compliance. Proudly serving Nassau and Suffolk Counties, JNJ Air also offers free estimates, financing options, and 24/7 emergency service to keep your home warm and safe all winter long.

JNJ Air delivers comprehensive HVAC services for both commercial and residential clients throughout Long Island, offering tailored solutions to meet the unique comfort needs of homes, offices, retail spaces, and industrial facilities. Their team of certified technicians is equipped to handle everything from system design and new installations to repairs, replacements, and ongoing maintenance. Whether it’s a central air system for a family home or a rooftop unit for a large commercial building, JNJ Air ensures energy efficiency, code compliance, and long-term reliability. With over 30 years of experience, they pride themselves on prompt service, transparent pricing, and quality workmanship. Serving Nassau and Suffolk Counties, JNJ Air provides free estimates, flexible financing, and 24/7 emergency support, making them a trusted partner for all your heating and cooling needs.

JNJ Air offers expert installation, maintenance, and repair services for commercial refrigeration systems across Long Island. Their team specializes in walk-in coolers, freezers, reach-in units, and other essential refrigeration equipment for restaurants, grocery stores, and other businesses. With a focus on energy efficiency and temperature precision, JNJ Air ensures your systems run reliably and meet all safety standards. They provide fast response times and 24/7 emergency service to minimize downtime and protect your inventory. Serving Nassau and Suffolk Counties, JNJ Air is a trusted partner for dependable commercial refrigeration solutions.

JNJ Air offers seasonal maintenance and tune-up services to keep your HVAC systems running efficiently year-round on Long Island. Their thorough inspections and cleanings help prevent costly breakdowns, extend equipment lifespan, and ensure peak performance during the hottest summers and coldest winters. Services include checking refrigerant levels, inspecting electrical components, cleaning coils and filters, and testing system safety and efficiency. Regular maintenance also helps improve indoor air quality and lower energy bills. Available for both residential and commercial systems in Nassau and Suffolk Counties, JNJ Air’s maintenance plans include convenient scheduling, priority service, and expert care from certified technicians.

JNJ Air provides 24/7 emergency HVAC support across Long Island, ensuring fast, reliable service whenever unexpected issues arise. Whether it’s a broken furnace in the middle of a winter night or a failed AC unit during a summer heatwave, their certified technicians are always on call to restore comfort quickly and safely. They’re equipped to handle urgent repairs for all major heating, cooling, and refrigeration systems—residential and commercial alike. With prompt response times and fully stocked service vehicles, JNJ Air minimizes downtime and helps prevent further damage. Serving Nassau and Suffolk Counties, their around-the-clock support gives you peace of mind no matter when trouble strikes.

$275

AC Maintenance Package

• Change or Clean Filters
• Clean Drain Lines
• Examine All Electrical Work
• Lubricate Motors
• Check Refrigerant Levels
• Clean Condenser Coil
• Inspect Evaporator Coil
• Start Up & Run Through of the Cooling System

$275

Heat Maintenance Package

• Clean Flame Sensor
• Clean Drain Lines if Needed
• Lubricate Motors
• Check for Proper Flue Discharge
• Examine All Electrical Work
• Vacuum Out Dust & Debris Around
• Check Heat Exchanger for Any Holes
• Change or Clean Filters if Needed
• Start Up & Run Through of Heating Cycle on System
• Also Check Heat Pump Operations