7 HVAC Maintenance Contractors in Johns Island, SC
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Top-Rated HVAC Maintenance 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 Maintenance 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…”
HVAC Maintenance Costs in Johns Island
Routine tune-up and maintenance plan pricing for Johns Island homeowners.
| Service | Low | Average | High |
|---|---|---|---|
Single AC tune-up | $70 | $125 | $200 |
Single furnace tune-up | $80 | $135 | $220 |
Full HVAC inspection | $150 | $275 | $400 |
Annual maintenance plan Includes 2 visits/year + discounts on repairs | $120 | $240 | $360 |
Premium maintenance plan Priority service + free diagnostics | $200 | $350 | $500 |
Duct cleaning (full home) | $300 | $475 | $800 |
Filter replacement (per filter) | $15 | $35 | $75 |
Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
HVAC Maintenance in Johns Island, SC: What to Expect
Charleston’s coastal Lowcountry climate drives steady demand for hvac-maintenance Johns Island: long, humid summers with highs near 89°F and persistent Atlantic moisture mean air conditioning and dehumidification face heavy loads from May to September. Salt air accelerates corrosion on coastal systems, so seven local contractors — averaging a 4.7 rating from 2,276 reviews and one offering 24/7 service — stay busy year-round.
Transparent pricing can be hard to pin down from summary data; specific cost items and ranges need on-site assessment because system condition, coastal exposure and refrigerant type affect labor and parts. South Carolina requires HVAC professionals to hold a Mechanical Contractor (Group 2 — HVAC) license from the Contractor’s Licensing Board, so verify credentials and proof of insurance before agreeing to maintenance plans or component replacements.
Customer highlights weren’t provided, so focus instead on patterns buyers should watch for: consistent responses about corrosion mitigation, seasonal coil cleanings, and proactive refrigerant leak checks tend to appear in reliable providers’ scopes. Prioritize contractors who document humidity control strategies, offer corrosion-resistant materials for coastal installations, and maintain clear maintenance schedules and emergency access — especially important in a market with limited 24/7 coverage.