7 AC Installation Contractors in Johns Island, SC
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Top-Rated AC Installation Contractors in Johns Island
Carney & Son 72 Degrees
“Every sampled review awards 5 stars, with 4 of 5 reviewers naming specific technicians, Jacob, Daniel, Ryan, and Clarice consistently recognized for patience…”
AGL Heating & Air
“881 reviews all carry five-star ratings, with customers frequently citing specific technicians by name. Multiple reviewers note the company fixed problems left…”
All AC Installation Contractors (7 total)
5 Star Charleston Johns Island
“Fourteen reviewers specifically mention technicians by name, with Christian and Zach receiving the most…”
James Island Heating & Air, LLC
“25 of the 27 reviews award 5 stars, with customers consistently citing fast response times and knowledgeable…”
Triad Mechanical Contractors
“Four of 14 reviewers awarded 1-star ratings, citing unresponsive service, professionalism breakdowns, and…”
AC Installation Costs in Johns Island
New central AC installation costs in Johns Island, by system type and brand.
| Service | Low | Average | High |
|---|---|---|---|
Window unit | $150 | $350 | $700 |
Ductless mini-split (single zone) | $2,000 | $4,500 | $8,000 |
Central AC replacement (existing ducts) | $3,500 | $6,500 | $12,000 |
Central AC new install (with ductwork) | $7,000 | $12,000 | $20,000 |
Carrier (residential) | $3,800 | $6,200 | $10,500 |
Trane (residential) | $5,000 | $8,800 | $13,600 |
Lennox (residential) | $3,500 | $6,500 | $12,000 |
Rheem (residential) | $3,200 | $5,500 | $9,000 |
Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
AC Installation in Johns Island, SC: What to Expect
Charleston’s coastal Lowcountry climate makes air conditioning the primary household system on Johns Island, with hot, humid summers and persistent coastal moisture driving heavy latent loads from May through September. Salt air accelerates corrosion, so demand for ac-installation Johns Island remains steady year-round. Seven contractors serve the island, averaging a 4.7 rating across more than two thousand reviews, and one offers 24/7 service.
Pricing in the Johns Island market varies by system size, equipment quality, and corrosion-resistant materials; listings show a broad range reflecting basic split systems up to high-efficiency packaged units with enhanced coastal coatings. South Carolina requires HVAC contractors to hold a Mechanical Contractor (Group 2 — HVAC) license from the Contractor’s Licensing Board, so verify licensing and coastal warranty details before signing an installation estimate.
Customer feedback tends to cluster around punctuality, clear communication about corrosion mitigation, and thorough maintenance handoffs for seasonal humidity control. Reviewers often note technicians who explain drain line care and refrigerant charge, and they value contractors that document corrosion-resistant parts and service intervals. Given the salt-air environment, prioritize licensed firms that demonstrate coastal experience, readable warranties, and routine maintenance plans.