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Best HVAC companies in Charleston, SC

The highest-scoring HVAC company in and near Charleston is Alexander Heating & Cooling (score 81, 5.0 stars from 481 Google reviews). 2 companies meet the 5 Star standard within 25 km.

Last updated Sep 25, 2026How we rank
  1. 1

    Alexander Heating & Cooling

    5.0 · 481 Google reviewsCharleston, SC
    Financing availableBackground-checked
    81SCORE
    (843) 608-1689 WebsiteFull profile
  2. 2

    Aptus Home Services, HVAC, Plumbing & Electric

    5.0 · 200 Google reviewsMt Pleasant, SC
    InsuredEmergency serviceFinancing availableBackground-checked
    76SCORE
    (843) 588-4211 WebsiteFull profile

We list only companies that clear our published bar, so this area is still filling in. As more HVAC companies near Charleston qualify, they'll appear here automatically.

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HVAC companies in Charleston: quick answers

Who is the highest-rated HVAC company in Charleston, SC?

Alexander Heating & Cooling has the highest 5 Star Score among HVAC companies in and near Charleston: 81 out of 100, with a 5.0 star Google rating from 481 reviews.

How many 5 Star HVAC companies serve Charleston?

2 HVAC companies meet our standard within 25 km of Charleston: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 2 have 681 Google reviews between them, averaging 5.00 stars.

How are these HVAC companies ranked?

By 5 Star Score: rating quality adjusted for review count (45 points), review volume (25), review recency (15), years in business (10) and license verification (5). Businesses cannot pay to change their score.

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Ratings and review counts come from each company's public Google listing and are re-checked monthly. 5 Star Home Service Pros is independent; companies cannot pay for placement.