5 HVAC Repair Contractors in Johns Island, SC
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Top-Rated HVAC Repair 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 HVAC Repair Contractors (5 total)
5 Star Charleston Johns Island
“Fourteen reviewers specifically mention technicians by name, with Christian and Zach receiving the most…”
HVAC Repair Costs in Johns Island
Typical heating and cooling repair costs in Johns Island, by component.
| Service | Low | Average | High |
|---|---|---|---|
Diagnostic / service call | $75 | $120 | $200 |
Thermostat replacement | $150 | $275 | $500 |
Blower motor replacement | $400 | $650 | $1,100 |
Heat exchanger replacement | $1,500 | $2,200 | $3,500 |
Ignitor replacement (gas furnace) | $150 | $250 | $400 |
Control board replacement | $300 | $550 | $900 |
Full system repair (major) Multi-component failure | $500 | $1,200 | $3,000 |
Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
HVAC Repair in Johns Island, SC: What to Expect
Charleston’s Lowcountry climate — hot, humid summers with highs near 89°F and 78% humidity plus Atlantic moisture — makes moisture control and sustained cooling the primary service need on Johns Island. Salt air accelerates corrosion on coastal equipment, pushing frequent maintenance and repairs. Five contractors serve the area, averaging a 4.9 rating from 2,259 reviews; one provides 24/7 service for emergencies. hvac-repair Johns Island demand centers on corrosion mitigation and reliable dehumidification.
Pricing for repairs varies by scope: condenser replacement, compressor work, refrigerant recharge and corrosion-related part swaps raise costs through parts and labor, along with access challenges for waterfront properties. South Carolina requires HVAC contractors to hold a Mechanical Contractor (Group 2 — HVAC) license from the Contractor’s Licensing Board, so confirm license status and ask for written estimates that separate parts, labor and any coastal-protection coatings or sacrificial-anode components.
Customer highlights are not detailed here, but review patterns in this market emphasize punctuality, corrosion expertise, and responsive service windows. Given the coastal environment, prioritize technicians who document corrosion inspections, offer preventative coatings, and can show local references. For overnight failures, verify which firm offers true 24/7 coverage and whether emergency rates and warranty responses are spelled out in writing.