Verified Charleston HVAC and air conditioning companies for AC repair, AC replacement, heating service, and duct work - serving Downtown, West Ashley, Mount Pleasant, James Island, Daniel Island, North Charleston and beyond.
When the AC dies in July, speed matters - but so does not getting sold a system two sizes too big. A top-rated HVAC company quotes load calculations, not guesses, and stands behind the install with a real labor warranty.
Salt air, historic homes and hurricane season are hard on a house. Lowcountry owners need trades who understand old construction and coastal weather. When you compare HVAC and air conditioning companies in Charleston, ask every one of them the same three questions: are you licensed and insured for this exact work, who is actually showing up (your crew or a sub), and what does the warranty cover in writing.
Searching for HVAC and air conditioning companies near me in Charleston? Everyone ranked below serves Charleston and the surrounding neighborhoods, including Downtown, West Ashley, Mount Pleasant, James Island, Daniel Island, North Charleston. Check the address and service area on a listing before you call, because the closest one is not always the one a search engine puts first.
If this is an emergency, call rather than fill in a form. An AC that dies in a heat wave, or heat that dies in a freeze, is the case for calling instead of waiting for morning. Ask up front whether they are dispatching tonight and what the after-hours call-out fee is: 24/7 availability is not something a star rating can tell you.
Based on Google ratings and review volume as of September 2026, the top rated HVAC and air conditioning companies in Charleston are AGL Heating & Air, Sing, Blake & Sons Heating & Air. See the live ranked list, ratings, and contact details on this page.
Every company ranked on this page serves Charleston and the surrounding area, including Downtown, West Ashley, Mount Pleasant, James Island, Daniel Island, North Charleston. Open any listing for its address, phone number and service area, then call the two or three closest to you. Distance is worth checking yourself: the nearest HVAC company is not automatically the best one, so this page ranks on rating and review volume first and leaves proximity to you.
After-hours availability is not part of a Google rating, so this directory cannot verify it for you in advance. An AC that dies in a heat wave, or heat that dies in a freeze, is the case for calling instead of waiting for morning. Call the top rated HVAC and air conditioning companies on this page and ask two things before you agree to anything: are you dispatching tonight, and what is the after-hours call-out fee. A company that answers both plainly on the phone is usually the one that actually shows up.
When the AC dies in July, speed matters - but so does not getting sold a system two sizes too big. A top-rated HVAC company quotes load calculations, not guesses, and stands behind the install with a real labor warranty.
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Claim your free listingPrefer to talk? Call or text the Top Rated directory on (813) 454-0813. This is our number, not the number of any business listed here.