Serving Suffolk & Nassau County · Long Island, NY
Smithtown, Suffolk County
HVAC Service in Smithtown, NY.
Licensed & insured heating and air conditioning repair, installation, and emergency service for Smithtown homeowners. Same-day appointments available.
What we offer in Smithtown
Full-Service HVAC for Smithtown Homes & Businesses.
Serving Smithtown since 2019
Your Local Smithtown HVAC Experts
A1 Heating & Air Conditioning has been serving Smithtown 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 Kings Park, Hauppauge, Commack, and St. James — so wherever you are in the area, we're close by.
Common questions
HVAC Questions from Smithtown Homeowners
Do you offer same-day HVAC service in Smithtown?
Yes — A1 Heating & Air Conditioning offers same-day service throughout Smithtown and the surrounding Suffolk County area. Call 631-331-2102 and we'll do our best to get a technician to you the same day.
What HVAC brands do you service in Smithtown?
We service all major brands including Lennox, Carrier, Trane, Rheem, Daikin, Mitsubishi, and more. We're also an authorized Lennox dealer for new system installations.
Do you handle emergency heating or AC breakdowns in Smithtown?
Absolutely. We provide 24/7 emergency HVAC service in Smithtown. Whether your furnace stops working in January or your AC fails on the hottest day of summer, we respond fast.
How much does AC repair cost in Smithtown?
AC repair costs vary depending on the issue — a refrigerant recharge, a failed capacitor, and a compressor replacement are all very different jobs. We provide upfront pricing before any work begins so there are no surprises.
Do you install ductless mini-split systems in Smithtown?
Yes. We install and service ductless mini-split systems from Mitsubishi, Daikin, and other leading brands. Mini-splits are a great option for Smithtown homes without existing ductwork or for room additions.
Our Services
Nearby Service Areas
Get in Touch
Serving Smithtown and all of Suffolk County. Same-day and emergency service available.
631-331-2102Serving Smithtown & surrounding areas
Need HVAC Service in Smithtown?
Same-day and emergency service available. Licensed, insured, and trusted by Smithtown homeowners since 2019.