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Replacement costs for aging systems in Jacksonville. If repair cost exceeds 50% of replacement, replacement is usually more economical.
| Service | Low | Average | High |
|---|---|---|---|
Central AC (3-ton, basic) | $5,500 | $8,000 | $11,000 |
Central AC (4-ton, mid-efficiency) | $7,500 | $10,500 | $14,000 |
Central AC (5-ton, high-efficiency) | $9,500 | $12,500 | $16,000 |
Full HVAC system (AC + furnace) | $11,590 | $13,430 | $14,100 |
Plus ductwork replacement If existing ducts are aged/leaking | $2,100 | $3,000 | $4,000 |
| Repair cost threshold | 50% rule: if repair > 50% of replacement, replace | ||
Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
Northeast Florida's sustained heat and humidity age AC systems faster than temperate climates - a 10-year-old unit that's run 2,500+ hours annually in Jacksonville has seen considerably more wear than the same unit in a milder market. When replacement becomes necessary, ac replacement Jacksonville involves 42 active contractors with a 4.7-star average across 32,060 reviews, and 22 serving 24/7.
Central AC replacement pricing in Jacksonville tracks with system capacity: a 3-ton basic system runs $5,500-$11,000 installed; a 4-ton mid-efficiency unit costs $7,500-$14,000; a high-efficiency 5-ton system lands between $9,500 and $16,000. Florida DBPR Class A or B licensing is mandatory for replacement contractors, with four years of HVAC experience required.
J&W Heating and Air's multi-step replacement process - diagnostic visit, project manager walkthrough, then installation crew - gives customers a structured view of the project before a single screw turns, and reviewers credit this model for realistic expectations. Lickety Split AC consistently draws five-star reviews for same-day replacement response across Jacksonville and extending into St. Augustine. At Fenwick Home Services, technician Cody handled a difficult diagnostic case that required escalation to senior tech Dale W. - a handoff that reviewers noted as handled transparently rather than delayed.
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