Serving Suffolk & Nassau County · Long Island, NY
Trusted HVAC Service
for Long Island Homes.
Licensed, insured, and family-owned since 2019. Honest, professional heating and cooling service — done right the first time.
What we do
Complete HVAC Services for Long Island
From routine maintenance to full system replacements — we handle it all with the same level of care and professionalism.
Why homeowners choose us
Professional Service You Can Actually Trust
We've been serving Long Island homeowners for over 25 years. Our reputation is built on honest work, fair pricing, and showing up when we say we will.
Customer reviews
What Long Island Homeowners Say
Financing options
Comfort That Fits Your Budget
A new HVAC system is a major investment. We offer flexible financing options to make it manageable — with fast approvals and transparent terms.
- 0% interest promotional financing available
- Low monthly payment options
- Fast, easy online application
- No prepayment penalties
Authorized dealer & service provider for leading brands
Service Area
Serving All of Long Island
A1 Heating & Air Conditioning provides HVAC service throughout Suffolk County. Click your town to learn more.
Ready to get started?
Schedule Service Today.
Same-Day Appointments Available.
Our team is standing by. Call now or request a free quote online — we'll get back to you fast.