If your unit is over twelve years old, making noises it didn't used to make, or costing more to repair than it ought to, it's time to look at replacement. A properly sized, properly installed high-efficiency system can cut your summer power bill by 30–40% compared to an aging 10-SEER unit — and in Baton Rouge's seven-month cooling season, that adds up fast.
Why homeowners replace (and why timing matters)
Your unit is 12+ years old
Most AC systems lose 3–5% efficiency per year after year seven. By year twelve, you're paying 20–40% more to run an old unit than a new one.
Repair costs are creeping up
If repairs in a 12-month window approach 40% of replacement cost, the math favors replacement — especially with Louisiana's cooling load.
Summer bills are climbing
Higher bills on the same thermostat setpoint almost always mean lost efficiency — worn compressor, refrigerant leak, or dirty coils beyond cleaning.
Uneven cooling between rooms
Back bedrooms hot, living room freezing. Usually a sizing, ductwork, or airflow issue — we include an airflow check in every replacement quote.
R-22 refrigerant systems
R-22 was phased out. Any remaining charge is extremely expensive. If your unit still runs R-22, replacement is usually the smarter math.
You're tired of midnight emergency calls
New systems come with 10-year parts warranties. Peace of mind is a real line item — and it's why most of our Care Club members eventually upgrade.
Our process — four steps, zero surprises
- Book in two minutes. Online or by phone. Confirmation within the hour.
- Text when we're rolling. Tech photo, live ETA, and a real window — not a 4-hour guess.
- Diagnose and quote flat. We walk you through what we found, show you the part, and quote in writing. Nothing starts without a yes.
- Fix it and back it up. Most repairs done in one visit. Every job carries a workmanship guarantee.
How much does a new AC cost in Baton Rouge?
Full residential system replacements in our area typically fall in this range, depending on tonnage (2.5–5 ton), SEER rating (14–22), and ductwork condition. Free, itemized in-home estimates — no obligation.
Why Signature Air
We're a small, veteran-owned HVAC company based in Livingston Parish. Our techs earn a salary — not commission — so the repair we recommend is the one your house actually needs. We service every major brand (Trane, Carrier, Lennox, Rheem, Goodman, American Standard, York, Daikin, Amana, Ruud), we carry the top 50 failure parts on every truck, and we answer our own phones 24/7.
If you're looking for a Baton Rouge or Livingston Parish HVAC company that shows up when they say they will, quotes flat, and doesn't try to sell you a new system during a $200 repair — that's us.
Serving these Southeast Louisiana communities
Not sure if you're in our service area? Drop us your ZIP or call (225) 963-1543.