San Antonio · Condenser Fan Motor Repair · Family-Owned Since 1996
If your outdoor unit is running but the big fan on top isn't turning, you've got minutes — not hours — before the compressor overheats and dies. Cut the breaker and call us. Condenser fan motor swaps are $450–$750 and done same day.
Typical price
$450–$750 installed
Time to fix
1–2 hours
Urgency
Critical — can kill the compressor in minutes
The condenser fan motor is the big motor that spins the fan on top of your outdoor AC unit. Its job is to pull air through the condenser coil to dump your home's heat outside. Without it, the compressor has nowhere to send heat — it overheats in about 10 minutes and either trips the safety or burns up entirely.
When a fan motor fails, you'll usually hear the unit humming or buzzing while the fan sits still. Sometimes you can spin the blade by hand and it'll run for a few minutes, which is a dead giveaway the start capacitor or motor bearings are shot.
This is one of those repairs where speed matters. A $500 motor problem turns into a $2,500 compressor problem if you let it run for an afternoon. If you see the unit running but the fan stopped, kill the disconnect or the breaker right away.
What it costs in San Antonio
$450–$750 installed — Includes motor, new matching capacitor, fan blade rebalance, and full test. ECM motors run higher; PSC motors lower. Our $59 diagnostic is waived when you approve the repair, so you only pay for the fix itself.
If two or more of these sound familiar, it's probably your condenser fan motor.
Here's exactly what a Carnes and Sons tech does at your house — no mystery, no upselling.
If the blade spins freely with no grinding, the motor bearings are probably OK and the issue is electrical (capacitor or windings). If it's stiff or grinds, the bearings are shot — motor must be replaced.
We measure the fan side of the capacitor against its microfarad rating. Out-of-spec means we replace the cap first — sometimes that fixes everything for $200 instead of $600.
If the capacitor is good and the blade spins freely, we ohm out the windings. A short to ground or open winding means the motor is electrically dead.
We don't substitute. Wrong RPM kills efficiency. Wrong rotation runs the fan backwards. Wrong HP overheats the new motor. We carry common 1/4 HP and 1/3 HP universal replacements on every truck.
Always a new matching capacitor with a new motor — they're sold as a set for a reason. We set the blade depth and pitch per OEM spec so airflow is correct. Test under load, verify amp draw, then show you the readings.
Get Your Condenser Fan Motor Diagnosed Today
Tell us what's happening. We'll text you back in minutes — no call center, no robo-calls.
$450 to $750 installed for a standard 1/4 or 1/3 HP PSC motor. ECM (variable speed) motors on high-efficiency systems run $700 to $1,100. Price includes a new matching capacitor and full system test.
The capacitor and motor wear out together — a tired capacitor is often what killed the motor in the first place. Installing a new motor on a 6-year-old capacitor is asking for the new motor to fail in a few months. We always install them as a pair.
8 to 12 years in San Antonio. Heat and dirty coils shorten that significantly. Annual maintenance (especially coil cleaning) easily adds 3-5 years.
Don't. First, the unit is live — sticking anything into a running condenser can kill you. Second, if the motor needed a manual start, the bearings or windings are already failing — running it that way will burn out the compressor. Cut the breaker and call us.
If you caught it fast (within an hour of the fan stopping) and shut the unit down, the compressor is fine. If you let it run for hours without the fan turning, the compressor may have overheated and developed internal damage that shortens its life. We'll check compressor amp draw and motor windings as part of the diagnosis.
PSC (permanent split capacitor) is the standard single-speed motor on most San Antonio systems — reliable, cheap to replace. ECM (electronically commutated) is variable-speed, more efficient, found on high-end Carrier Infinity and Trane XV systems. ECM motors cost more but use 30-40% less electricity.
Yes. Fan motor failures are time-sensitive and we keep emergency slots open. Text (210) 600-5091 with your address and we'll give you a real ETA.
1 to 5 years parts depending on the brand, plus 1 year labor. If the motor fails inside the warranty period, we cover it.
We're based in Stone Oak and roll trucks across San Antonio and the surrounding Hill Country every day.
License TACLB29435E · Family-Owned Since 1996
Cities & neighborhoods we serve
San Antonio · Stone Oak · Alamo Heights · Hollywood Park · Hill Country Village · Shavano Park · Castle Hills · Leon Valley · Helotes · Boerne · Fair Oaks Ranch · Bulverde · Timberwood Park · Garden Ridge · Schertz · Cibolo · Selma · Universal City · Live Oak · Converse · Windcrest · New Braunfels
No call center. The owner or one of his sons picks up.
(210) 600-5091