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New central AC installation costs in Gretna, 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.
Gretna’s Gulf Coast setting pushes cooling into the foreground: New Orleans-area summers deliver about 72 days over 90°F with humidity near 78%, so systems combat both temperature and heavy latent loads. With air conditioning running eight to nine months a year, demand for ac-installation Gretna is steady; six contractors serve the market, averaging a 4.1 rating, and four provide 24/7 service.
Exact line-item cost data from topCostItems wasn’t provided, so homeowners should expect pricing driven by equipment SEER rating, duct modifications, labor and permit fees rather than any single published range. Louisiana requires a Mechanical Work Contractor License with the HVAC subclassification from the LSLBC, so verify that the installer carries that credential and appropriate local permits before signing a contract to avoid compliance and warranty issues.
Customer highlight details weren’t supplied, but review patterns in similar Gulf Coast communities emphasize responsiveness to humidity-related issues, accurate load calculations, and quality duct sealing. Look for technicians who document load calculations, provide moisture-control strategies, and offer maintenance plans; those elements repeatedly separate satisfactory installs from ones that struggle under prolonged summer stress. Ask for references and written guarantees on humidity performance as part of your selection process.