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
June on Long Island: Is Your Central AC Ready for Heavy Summer Air?
June brings a noticeable shift inside Long Island homes. Spring freshness gives way to warmer afternoons, longer cooling cycles, and the first stretches of heavy seasonal humidity. Even before the hottest days of July and August arrive, many homeowners begin to notice that their homes feel different. Rooms feel warmer
Too Dry, Too Damp, or Never Quite Comfortable? Your Home May Need Better Humidity Control
Indoor comfort is often described in terms of temperature. If the home feels too cold, the heat goes up. If it feels too warm, the air conditioner runs longer. Yet temperature is only part of the comfort equation. Humidity plays an equally important role in how the air feels, how
How Pets Shape the Air Quality Inside Your Home
Pets make a home feel alive. They curl up on the couch, follow you from room to room, greet guests at the door, and become part of the daily rhythm of the household. But they also become part of the home’s indoor air environment in ways many families do not