A1 Heating and Air ConditioningHVAC contractor in Coram, NY

A1 Heating and Air Conditioning is ranked #5 of 596 HVAC contractors in Coram by CR Score, with 62 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

A1 Heating and Air Conditioning is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

Serves Coram and 12 towns within 25 miles: Port Jefferson, Setauket-East Setauket, East Setauket, Terryville, Port Jefferson Station, Mount Sinai, Stony Brook, Miller Place, Selden, Centereach, Saint James and Lake Grove. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

A1 Heating and Air Conditioning has a rating of 4.9 from 125 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call A1 Heating and Air Conditioning on (631) 331-2102. The business is at 11 Hulse Rd, Setauket- East Setauket, NY 11733, Coram, NY. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.