Serving Suffolk & Nassau County · Long Island, NY
Commack, Suffolk County
HVAC Service in Commack, NY.
Expert heating and air conditioning repair, installation, and emergency service for Commack homeowners. Family-owned, licensed, and insured since 2019.
What we offer in Commack
Full-Service HVAC for Commack Homes & Businesses.
Serving Commack since 2019
Your Local Commack HVAC Experts
A1 Heating & Air Conditioning has been serving Commack and the surrounding Suffolk County area since 2019. As a family-owned business, we understand the unique heating and cooling needs of Long Island homes — from older oil-heated colonials to newer construction with central air.
We also serve nearby Smithtown, Hauppauge, Kings Park, and Dix Hills — so wherever you are in the area, we're close by.
Common questions
HVAC Questions from Commack Homeowners
Do you offer HVAC service in Commack, NY?
Yes — A1 Heating & Air Conditioning serves Commack and nearby communities including Smithtown, Hauppauge, Kings Park, and Dix Hills. We're a local Suffolk County company.
Can you service my Lennox system in Commack?
Absolutely. We're an authorized Lennox dealer and service all Lennox heating and cooling equipment. We also service all other major brands including Carrier, Trane, Rheem, and Daikin.
What should I do if my heat stops working in Commack?
Call A1 at 631-331-2102 right away. We offer 24/7 emergency heating service throughout Commack and Suffolk County. Don't wait — a heating failure in winter can be a safety issue.
Do you install whole-home generators in Commack?
Yes. We install Generac and other standby generators for Commack homeowners. A whole-home generator keeps your heating, cooling, refrigerator, and lights running during Long Island power outages.
How do I know if I need a new AC system or just a repair?
Generally, if your AC is over 12–15 years old, requires frequent repairs, or has significantly higher energy bills, replacement is often more cost-effective. We'll give you an honest assessment and never push you toward a replacement you don't need.
Our Services
Nearby Service Areas
Get in Touch
Serving Commack and all of Suffolk County. Same-day and emergency service available.
631-331-2102Serving Commack & surrounding areas
Need HVAC Service in Commack?
Same-day and emergency service available. Licensed, insured, and trusted by Commack homeowners since 2019.