AC Installation Cost in Leander, TX (2026)

Most Leander systems are under ten years old, so the honest first question isn't replacement price — it's warranty status. Registered manufacturer warranties commonly cover parts for ten years, which converts many four-figure scares into labor-only repairs. When replacement genuinely arrives, plan $8,500–$18,500 with Leander's larger two-story stock filling the upper band.

What moves the number

• Warranty math first. A covered compressor still costs $800–$2,500 in labor and refrigerant — real money, but a fraction of replacement. Check registration before approving any replacement quote on a young system.
• Second opinions. Leander reviews repeatedly describe full-replacement pitches on young systems reversed by a second diagnosis. On any four-figure quote under ten years: standard practice.
• Builder-grade ducts. Sealing and balancing ($500–$3,500) often buys more comfort than equipment tiers — and skipping it wastes whatever you spend on the new system.
• Bonus rooms and zoning. The over-garage room is Leander's comfort complaint; zoning at replacement ($1,500–$4,500) fixes it at design level.
• Registration, again. Whoever installs, confirm the new warranty registration is filed and get the confirmation — the trap that caught the first owners shouldn't catch you twice.

Planning ranges

Leander / Williamson County planning bands, 2026 — not quotes. Get written, itemized scopes before deciding.

Item	Low	Typical	High
Labor on warranty-covered major repair	$800	$1,500	$2,500
Full system, 3-ton	$8,500	$12,000	$15,500
Full system, 4–5 ton / two-story	$10,500	$14,000	$18,500
Duct sealing / balancing	$500	$1,500	$3,500
Zoning add-on	$1,500	$2,800	$4,500

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