Replacing a central AC typically costs $2,500 to $7,500 for the unit alone and $5,000 to $11,000 for a full furnace-and-AC system (HomeGuide, 2026). Other sources put an installed AC at $3,887 to $8,073 (HomeAdvisor, updated Jun 17, 2026) or $5,000 to $12,000 (Fixr, 2026).
Plano HVAC › AC Replacement Cost in Plano, TX (2026)
These are national ranges from the sources cited. We found no published Plano-only price survey, so treat them as a starting point and get at least two written quotes.
2026 replacement cost ranges
| Job | Range | Source |
|---|---|---|
| Central AC unit replacement, installed | $2,500 – $7,500 | HomeGuide, new HVAC system cost (2026) |
| Central AC, installed (average) | $8,460 average | This Old House, air conditioner costs (2026) |
| New AC unit | $3,900 – $8,000 | Angi, new furnace and AC cost (updated Jul 9, 2026) |
| Full HVAC (furnace + AC) replacement | $5,000 – $11,000 | HomeGuide, new HVAC system cost (2026) |
| Furnace + AC at the same time | $5,000 – $12,500 ($7,500 average) | Angi, new furnace and AC cost (updated Jul 9, 2026) |
| HVAC with new ductwork | $7,000 – $16,000 | HomeGuide, new HVAC system cost (2026) |
| HVAC replacement permit | $100 – $250 | HomeGuide, new HVAC system cost (2026) |
| AC unit installed (normal range) | $3,887 – $8,073 ($5,978 average) | HomeAdvisor, updated Jun 17, 2026 |
| Central AC installed (national average range) | $5,000 – $12,000 (about $6,000 average, 3-ton) | Fixr, AC installation cost (updated Jan 28, 2026) |
| Central AC with new ductwork | $5,800 – $14,400 ($8,750 average) | Fixr, central air installation cost (updated Aug 29, 2025) |
The sources disagree because they measure different things (unit-only vs total installed, different survey sets). That spread is normal, so compare written quotes for the same tonnage and SEER2 rating.
What drives the price in Plano
- System size in tons and SEER2 efficiency rating.
- Whether the ductwork and line set are reused.
- Attic installs, common in Plano homes, add labor.
- The City of Plano lists installing or replacing a furnace or an air conditioning system as work that needs a permit (City of Plano, When is a permit required?). We found no published current Plano residential HVAC permit fee (UNKNOWN); HomeGuide puts typical HVAC replacement permits at $100 to $250 nationally.
- Registration: the City of Plano requires mechanical contractors to hold a current Texas license and register with the city (City of Plano contractor registration requirements (PDF)).
Hiring checklist
- Get at least two written quotes for the same equipment.
- Ask who pulls the city permit.
- Check the TDLR license.
Compare HVAC installation companies or browse the full directory.
Frequently Asked Questions
- How much does a new AC cost in Plano in 2026?
- National 2026 data puts a central AC at $2,500 to $7,500 for the unit (HomeGuide) and about $8,460 on average installed (This Old House). We found no Plano-only price survey.
- Do I need a permit to replace an AC in Plano?
- HVAC replacement usually needs a permit, and Plano requires mechanical contractors to be state licensed and city registered. Ask your contractor to pull it.
Sources
- HomeAdvisor, updated Jun 17, 2026
- Fixr, AC installation cost (updated Jan 28, 2026)
- Fixr, central air installation cost (updated Aug 29, 2025)
- City of Plano, When is a permit required?
- HomeGuide, new HVAC system cost (2026)
- This Old House, air conditioner costs (2026)
- Angi, new furnace and AC cost (updated Jul 9, 2026)
- City of Plano contractor registration requirements (PDF)
Related
- Plano HVAC Companies Ranked by Verified Public Facts (2026)
- Plano AC repair cost
- Emergency AC repair in Plano
- Sunday and weekend AC repair in Plano
- 2026 furnace and heat pump cost in Plano
- How to check an HVAC license in Plano
Listing updates and sponsorship
Own one of these businesses? Claiming or correcting a listing is free. A Featured spot is a paid placement, always labeled “Featured”, and never changes the A to Z order.