Nassau County's Most Trusted HVAC Experts Since 1967
Long Island
Services
Insured
Complete HVAC Solutions for Your Home
Heating Services
Expert furnace and boiler repair, installation, and maintenance. Factory-certified on all major brands with same-day emergency service available.
Air Conditioning
Central AC and ductless cooling solutions. Keep your home comfortable with efficient installations, repairs, and seasonal maintenance.
Indoor Air Quality
Air purifiers, humidifiers, ventilators, and UV lamps. Breathe cleaner, healthier air with our comprehensive IAQ solutions.
Water Filtration
Whole-home water filtration systems for cleaner, safer water. Free water testing and customized solutions for your family's needs.
Emergency Services
24/7 emergency heating and cooling repair. When your system fails, we respond fast with experienced technicians ready to help.
Service Plans
Protect your investment with preventative maintenance plans. Priority scheduling, exclusive discounts, and peace of mind year-round.
Why Long Island Families Choose Air Design
Factory-Certified Experts
Trained on all major brands
Same-Day Service
Available 7 days a week
Carrier Presidents Award
Top-tier service recognition
Community Focused
Local, family-owned business
Simple, Transparent Service Process
CONTACT & CONSULTATION
Call or schedule online. We'll discuss your needs and schedule a convenient appointment time. Emergency? We respond 24/7.
FREE ESTIMATE & ASSESSMENT
Our factory-certified technicians assess your system and provide a free estimate. We'll explain your options, how each performs, and what to expect.
EXPERT INSTALLATION OR REPAIR
Our experienced team completes your installation or repair with professional workmanship. We're neat, efficient, and respect your home.
YOUR SATISFACTION GUARANTEED
We ensure everything works perfectly before we leave. Our courteous team is always available to answer questions and provide ongoing support.
Latest HVAC Tips & News
Signs Your Air Conditioner Is Working Harder Than It Should
When an air conditioner fails completely, the problem is obvious. The house gets hot, comfort disappears quickly, and service becomes urgent. More often, however, air conditioning issues begin far more quietly. A system may still turn on, still cool somewhat, and still appear functional on the surface, even while working
May Air Quality Check: Is Your Home Ready for Allergy Season?
May creates a natural moment to reevaluate how well the home is supporting comfort and air quality. Windows begin opening more often, cooling systems start cycling back on, and pollen levels rise as households prepare for the warmer months ahead. For many families, this seasonal transition brings a noticeable change
Why Spring Is the Best Time to Schedule Preventative Air Conditioning Maintenance
Why Spring Is the Best Time to Schedule Preventative Air Conditioning Maintenance For Long Island homeowners, air conditioning is more than a convenience, it’s a necessity once summer heat and humidity arrive. Yet many AC systems don’t receive attention until the first breakdown occurs on a sweltering day. Preventative air