Second-floor AC not cooling: ECM blower motor replaced
Last updated Reviewed by Waseem Shahzad, Lead Technician
Greenlawn, NYAC RepairTechnicians: Abid and Waseem and JustinAugust 2026
A 28-year-old second-floor system stopped cooling. The ECM blower motor had failed; we sourced a new one, installed it and checked the amps.
What the homeowner reported
A new customer reported that the second-floor air conditioning was not cooling. The record notes the unit is about 28 years old.
What we found
Abid diagnosed a bad blower motor in the attic air handler, so no air was moving across the cooling coil. The motor is an ECM (variable-speed) type.
What we did
The team sourced the replacement motor first thing on the next business morning. Waseem removed the failed motor and installed the new variable-speed ECM blower motor, wired it in and tested it, checking the amp draw and listening for any abnormal noise.
Visits and time on site
Two visits: one to diagnose the motor, and a return visit to install the new one.
The result
With the new blower motor in, the system was running well and everything else checked out.
Job details are from our August 2026 service record for this Greenlawn home. Customer details are left out.
General information, not details from this job
About ECM blower motors
An ECM (electronically commutated) blower motor varies its speed to match what the system needs, and it uses less electricity than an older fixed-speed motor. When one fails, the outdoor unit may still run but no air moves through the house, and the indoor coil can freeze. These motors are specific to the air handler, so the right replacement has to be matched before the install.
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