About A1 Heating & Air Conditioning — Long Island HVAC
Family-owned since 2019
About A1 Heating & Air Conditioning
Long Island's trusted HVAC company — built on honest work, fair prices, and service that treats your home like our own.
Who We Are
Our Story
A1 Heating & Air Conditioning was founded in 2019 with one goal: give Long Island homeowners an HVAC company they could actually trust. Too many families were getting overcharged, oversold, or left waiting days for a callback. We set out to change that.
Owner Gary Ievoli built this company from the ground up — starting with a single service van and a commitment to showing up on time, diagnosing problems honestly, and standing behind every job. That approach earned us the trust of thousands of Suffolk County families, and it's still how we operate today.
We're not a national franchise or a call center. We're your neighbors — a local, family-owned business that lives and works right here on Long Island. When you call us, you get a real person, a real technician, and real accountability.
Gary Ievoli
Owner & Founder
Gary has spent his career in the HVAC trade, mastering every aspect of heating and cooling systems. He founded A1 Heating & Air Conditioning in 2019 to bring honest, expert service to Long Island homeowners — and he remains hands-on in the business every day.
Licensed, Insured & Certified
Fully Licensed
New York State licensed HVAC contractor
Fully Insured
Liability and workers' compensation coverage
EPA 608 Certified
Certified for refrigerant handling and recovery
Background Checked
All technicians are vetted and background checked
Why Long Island Chooses A1
24/7 Emergency Service
HVAC emergencies don't keep business hours. We're available around the clock, every day of the year.
Honest Diagnostics
We tell you exactly what's wrong and what it costs to fix — no upsells, no scare tactics, no surprises.
5-Star Rated
Hundreds of five-star reviews from real Long Island homeowners who trust us with their homes.
Local & Family-Owned
We live here too. Our reputation is built one job at a time, right here in Suffolk County.
Proudly Serving Suffolk County
From Smithtown to Patchogue, Huntington to Stony Brook — we serve homeowners and businesses across Long Island's North Shore and South Shore.
See all service areas →Ready to Work With a Company You Can Trust?
Call us today or request a free estimate online.