Serving Suffolk & Nassau County · Long Island, NY
Stony Brook, Suffolk County
HVAC Service in Stony Brook, NY.
Expert heating and air conditioning repair, installation, and emergency service for Stony Brook homeowners. Serving the Stony Brook area and Three Village community since 2019.
What we offer in Stony Brook
Full-Service HVAC for Stony Brook Homes & Businesses.
Serving Stony Brook since 2019
Your Local Stony Brook HVAC Experts
A1 Heating & Air Conditioning has been serving Stony Brook 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 East Setauket, Setauket, Port Jefferson, and Old Field — so wherever you are in the area, we're close by.
Common questions
HVAC Questions from Stony Brook Homeowners
Do you offer HVAC service in Stony Brook, NY?
Yes — A1 Heating & Air Conditioning serves Stony Brook and the surrounding Three Village area including East Setauket, Setauket, Old Field, and Port Jefferson. Call 631-331-2102 to schedule service.
Do you service older homes in the Stony Brook area?
Absolutely. The Stony Brook and Three Village area has many older homes with aging HVAC systems. We have extensive experience retrofitting modern, energy-efficient heating and cooling solutions into older properties — including homes with oil heat, older boilers, and systems without existing ductwork.
Can you install a ductless mini-split in my Stony Brook home?
Yes. Ductless mini-split systems are an excellent choice for Stony Brook homes that lack existing ductwork or need zoned comfort in specific rooms. We install Mitsubishi, Daikin, and other leading ductless brands.
What should I do if my heating system breaks down in Stony Brook?
Call A1 at 631-331-2102 right away. We offer 24/7 emergency heating service throughout Stony Brook and Suffolk County. We respond fast — a heating failure in winter is never something you should wait on.
Do you offer free estimates for new HVAC systems in Stony Brook?
Yes. We provide free, no-obligation estimates for new heating and cooling system installations throughout Stony Brook. We'll assess your home, explain your options clearly, and give you upfront pricing with no surprises.
Our Services
Nearby Service Areas
Get in Touch
Serving Stony Brook and all of Suffolk County. Same-day and emergency service available.
631-331-2102Serving Stony Brook & surrounding areas
Need HVAC Service in Stony Brook?
Same-day and emergency service available. Licensed, insured, and trusted by Stony Brook homeowners since 2019.