Should You Switch to ECM Retrofit?
Ideally, all the PSC motors should be replaced by the retrofit ECM motors. With a few hundred dollars to retrofit an existing PSC, you could enjoy the energy savings, quietness and comfort that could cost multiple thousand dollars with a brand-new ECM variable speed HVAC system.
Furthermore, many utility companies, like AEP, Consumers Energy, etc., have some incentive cash rebate programs to retrofit the existing PSC blower motor for a HVAC system at houses. Therefore, the expenses to upgrade an ECM retrofit may cost same or less than that of a PSC motor.