Get an instant cost estimate for AC installation, furnace replacement, heat pumps, or mini-splits. Select your system specs below.
HVAC installation costs depend on four main factors: system type, efficiency rating, system size (tonnage), and whether you need new ductwork. Getting these right is the difference between a profitable job and a callback nightmare.
Sizing matters most. An oversized system short-cycles (turns on and off too frequently), wears out faster, and doesn't dehumidify properly. An undersized system runs constantly and never reaches set temperature. The rule of thumb is 1 ton per 500-600 sqft in warm climates (like Texas) and 1 ton per 700-800 sqft in cooler climates — but a Manual J load calculation is the only accurate method.
Efficiency impacts upfront vs. operating costs. A 14 SEER system costs $3,000-5,000 less upfront than a 20+ SEER variable-speed unit, but the high-efficiency system saves $400-800/year in electricity. In hot climates, the payback period is 5-7 years. For customers planning to stay long-term, high-efficiency is the better value.
Ductwork is the hidden cost bomb. If the existing ducts are properly sized, sealed, and insulated, reuse them. But if they're undersized, leaky, or in a crawlspace full of rodent damage, new ductwork can add $3,000-7,000 to the job. Always inspect before quoting.
A complete HVAC system (furnace + AC) costs $6,000–$15,000 installed for a standard home. High-efficiency variable-speed systems run $10,000–$20,000+. Ductless mini-splits range $3,000–$12,000 depending on the number of zones.
General rule: 1 ton per 500–600 sqft in hot climates (Texas, Arizona, Florida), 1 ton per 700–800 sqft in mild climates. A 2,000 sqft Texas home typically needs a 3.5–4 ton system. For accuracy, always do a Manual J load calculation.
A straightforward system swap (same type, existing ductwork) takes 1 day. New ductwork adds 1-2 days. Converting from one system type to another (e.g., adding AC to a furnace-only home) can take 2-3 days.
Yes — replacing both together saves $500-1,500 in labor vs. doing them separately. Matched systems also perform better and most manufacturers require matched components for full warranty coverage.
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