How Much Does an AC Compressor Cost to Replace?
A central AC compressor costs $800 to $2,800 to replace, about $1,550 installed. On a unit over 10 years old, replacing the whole system is often smarter.
What you'll pay, by situation
Representative types, not specific listings. Installed prices; the unit alone is cheaper.
Replacing the compressor in a central air conditioner costs $800 to $2,800, and about $1,550 installed on average (This Old House; Bob Vila puts the average at $1,200). The part is $950 or more; the rest is labor and refrigerant.
This is about the compressor in a home's central AC or heat pump — not a car's AC compressor (a different job, usually $800–$1,300) or a shop air compressor. If your AC is more than about 10 years old, read the "repair the compressor or replace the whole AC" section below before you spend anything.
How much does it cost to replace an AC compressor?
$800 to $2,800, around $1,550 on average. The size of the system is the biggest factor:
| System size | Compressor replacement (installed, 2026) |
|---|---|
| 1.5–2 ton (small home / one zone) | $700–$1,400 |
| 2.5–3 ton (typical single-family home) | $900–$2,100 |
| 3.5–4 ton (larger home) | $1,100–$2,100 |
| 5 ton (large home) | $1,800–$2,600 |
Sources: This Old House, Bob Vila (5-ton). Labor is $300 to $900, or about $600 as a flat fee, for a job that takes four to six hours.
What makes the price go up or down?
| Factor | Effect |
|---|---|
| **System tonnage** | The single biggest swing — see the table above |
| **Warranty** | An active parts warranty drops the total to roughly $600–$1,200 (labor only) |
| **Compressor type** | A scroll compressor — the common residential type — runs about $1,000 for the part; older reciprocating units are cheaper, high-efficiency two-stage compressors more |
| **Refrigerant** | Recovering and recharging adds $100–$350 for R-410A |
| **R-22 (pre-2010 units)** | R-22 is no longer produced ([EPA](https://www.epa.gov/ods-phaseout/frequent-questions-about-phaseout-hydrochlorofluorocarbons-hcfcs), 2020) — a recharge on one of these can cost more than the labor, and it is a strong signal to replace the system |
| **Access** | A rooftop or tightly packed side-yard unit adds labor |
Is the compressor under warranty?
Check the install date before you pay for anything. Most residential compressors carry a 5- to 10-year parts warranty from the original installation — sometimes only if the unit was registered. That covers the compressor itself, not the $600 to $1,200 of labor to install it.
The date is on the rating plate of the outdoor unit, or coded into the serial number. Our HVAC age tool decodes Goodman, Carrier, Lennox, Trane, York and more — if the unit is 8 years old, a warranty claim changes the math completely.
Should you replace the compressor or the whole AC?
Replace just the compressor if the unit is under about 10 years old, the part is under warranty, and nothing else on the system is failing.
Replace the whole AC if any of these is true (This Old House, NerdWallet):
- The system is over 10 to 12 years old — the rest of it is aging on the same clock.
- It runs on R-22.
- The repair quote is more than half the price of a new unit.
- The coil is also leaking, or the unit has needed other repairs recently.
The reason is simple: the compressor is the most expensive single part of an AC, so once it fails on an older unit, you are spending most of a new-system price to put a warranty on one component and keep an out-of-warranty everything-else. How long an AC lasts covers where your unit sits on that curve.
What does a new AC cost instead?
$2,500 to $4,500 for a new central air conditioner (NerdWallet) — more with new line sets, a matched coil, or a higher-efficiency unit. That comes with a full parts warranty and 30 to 50% better efficiency than a 15-year-old system. If you are rethinking whole-house cooling entirely, central AC vs window units runs the numbers.
Why did my AC compressor fail?
A compressor rarely fails on its own — something else usually took it out:
- Running low on refrigerant for a long time — a slow leak left unfixed makes the compressor run hot and starved.
- A failed run capacitor left unaddressed — the compressor draws extra current on every start until it burns out.
- A dirty condenser coil — the system can't shed heat, so the compressor overheats.
- Electrical problems — a failing contactor, loose wiring, or repeated power surges.
- Age — 12 to 15 years of start-stop cycles.
Fixing the small stuff early — a $175 capacitor, a $20 filter, a yearly service — is what keeps a $1,500 compressor job from happening at all.
Frequently Asked Questions
How much does it cost to replace an AC compressor?
$800 to $2,800 for a central air conditioner, about $1,550 installed on average (This Old House; Bob Vila puts the average at $1,200). The part is $950 or more; the rest is labor, which runs $300 to $900, plus $100 to $350 to recover and recharge the refrigerant.
Is it worth replacing an AC compressor?
On a unit under about 10 years old with an active parts warranty, yes. Past 10 to 12 years, out of warranty, or on an R-22 system, put the money toward a new AC instead — the compressor is the most expensive part of the system, and replacing it on an old unit buys you a warranty on one component and none on everything else.
Is an AC compressor covered under warranty?
The compressor part is often covered for 5 to 10 years from the original install date, but the labor to swap it (usually $600 to $1,200) is not. Registration is sometimes required for the full term. Check the install date first — the age tool reads it from the serial number.
How long does it take to replace an AC compressor?
Four to six hours for a straightforward job — recover the old refrigerant, swap the compressor, pull a vacuum on the lines, recharge, and test. A same-day repair is normal if the shop has the compressor in stock; a warranty part can add a few days.
Why did my AC compressor fail?
The common causes are age, running low on refrigerant for a long time (which lets the compressor overheat), a failed run capacitor left unaddressed, a dirty condenser coil, and electrical problems like a bad contactor or power surges. A compressor rarely fails first — something else usually took it out.
Sources
- This Old House — How Much Does an AC Compressor Cost? (2026) — total average $1,550 (parts + install); part $950+; labor $113/hr or ~$600 flat; by tonnage — 1.5–2 ton $700–$1,400, 2.5–3 ton $900–$2,100, 3.5–4 ton $1,100–$2,100; scroll compressor ~$1,000 (most common residential); extended labor warranty $200–$400; replace the system if the repair tops 50% of a new unit or the AC is over 10–12 years
- Bob Vila — How Much Does an AC Compressor Cost to Replace? — central AC compressor $800–$2,800, national average $1,200; labor $300–$900; with an active warranty ~$600–$1,200 total; refrigerant recovery/recharge +$100–$350; 5-ton compressor $1,800–$2,600
- NerdWallet — Air Conditioner Replacement Cost — a new central air conditioner runs $2,500–$4,500; if a repair equals half the price of a new unit, replace
- U.S. EPA — Phaseout of Class II Ozone-Depleting Substances (R-22) — production and import of R-22 banned January 1, 2020; existing systems serviceable only with reclaimed R-22, at rising cost