A window unit runs about $150–$800, a portable unit $100–$500, and a central air conditioner installed $3,000–$15,000 on typical manufacturer guidance.
Manufacturer pricing pages give the most reliable starting ranges — Carrier, Bryant, and Trane all publish cost guides by system type.
What Drives the Price of an Air Conditioner?
A bigger system costs more equipment and refrigerant, so a 2-ton and 5-ton unit of the same line differ noticeably before installation. Efficiency matters too: Trane notes single-stage, two-stage, multi-speed, and variable-speed systems price differently, and SEER2 shifts the number again.
Ductwork is the most overlooked factor. Replacing ducts adds $3,000–$10,000, which is why Bryant separates homes with existing ducts from those needing new ones. Two houses with identical equipment quotes can still land $10,000 apart on the final bill.
| System Type | Typical Installed Cost | Best For |
|---|---|---|
| Portable unit | $100–$500 | Renters and single rooms with no window access |
| Window unit | $150–$800 | One room, easy install, lowest upfront price |
| Ductless mini-split | $2,500–$15,000+ | Homes without ducts or zoned room-by-room cooling |
| Central AC (equipment only) | $2,500–$4,500 | Homes with working ducts, bought separately |
| Central AC (unit + install) | $3,000–$15,000 | Whole-home cooling with existing ductwork |
| Central AC (2026 installed) | $5,000–$28,000 | Current efficiency, brand, and complexity range |
| Duct replacement add-on | $3,000–$10,000 | Older homes where ducts leak or don’t exist |
Why Do Central AC Quotes Vary So Widely?
Quotes swing from $3,000 to over $28,000 because equipment, installation, and tax stack up. Carrier’s replacement guide puts central AC at $3,000–$15,000, while a newer Bryant page lists installed systems at $5,000–$28,000 for 2026 — same category, different assumptions about efficiency and complexity.
How Much Do Room Units Cost?
A window air conditioner costs $150–$800; a portable unit $100–$500. Both cool a single room, not a whole home. For a budget near $100, a compact window or portable model is the target — our roundup of the best air conditioner under 100 dollars covers tested picks. Ductless mini-splits sit in between: Carrier puts installation at $2,500–$15,000+ as a specialized job, not a weekend project.
Bryant, Trane, and Carrier all emphasize that installed cost depends on home layout, ductwork, equipment size, efficiency, and labor — so ask for an itemized replacement quote. Bryant’s HVAC pricing guide separates equipment, installation, and duct or accessory work.
What Should You Expect to Pay?
Pick your number by system type and home situation, then confirm with two local quotes.
- One room, tight budget: $100–$800 for a portable or window unit.
- One room, no window access: $2,500+ for a mini-split, installed.
- Whole home, ducts in place: $3,000–$15,000 for central AC installed.
- Whole home, new efficiency tier: $5,000–$28,000 with SEER2 and complexity priced in.
- Ducts need replacing: add $3,000–$10,000 to any central quote.
Use manufacturer ranges as a reality check. If a quote sits far below $3,000 for a full central install, ask what’s excluded — equipment, labor, or ducts.
Common Questions
Is it cheaper to repair or replace a central air conditioner?
It depends on age and repair size. Manufacturer replacement ranges start at $3,000, so a few-hundred-dollar repair is usually worth doing on a system under ten years old.
Does a higher SEER2 rating always cost more upfront?
Yes, generally. Bryant and Trane both tie pricing to SEER2, and higher-rated equipment costs more. The payoff is lower energy use over the system’s life, so the right choice depends on how long you’ll stay and your local electric rates.
Can I install a window air conditioner myself?
Usually yes. Window and portable units need no refrigerant work or ductwork. Central systems and ductless mini-splits are not DIY jobs — they involve refrigerant lines, electrical work, and permits, which is why Carrier and Bryant quote them as professionally installed projects.
Sources
- Bryant. “HVAC Pricing Guide” Supports the $3,000–$15,000 central AC range, the $5,000–$28,000 2026 installed range, and the cost factors of tonnage, SEER2, ductwork, and labor.
- Trane. “HVAC Replacement Cost Guide” Supports the $6,568–$13,669 air conditioner replacement range and the single-stage, two-stage, multi-speed, and variable-speed pricing differences.
- Carrier. “HVAC Replacement Cost” Supports the $3,000–$15,000 central AC range, the $2,500–$15,000+ ductless mini-split range, and the list of cost drivers.