In HVAC world, the practical differences between a motor start cap and a motor run cap are price, physical size, and longevity.
A start cap is cheaper, but is meant only for intermittent duty and is unsuitable for use as a run cap.
Meanwhile, a run cap costs more but can serve as a run cap or a start cap.
All things (except for outliers like the McLaren F1) are built down to a price.
In HVAC world, the practical differences between a motor start cap and a motor run cap are price, physical size, and longevity.
A start cap is cheaper, but is meant only for intermittent duty and is unsuitable for use as a run cap.
Meanwhile, a run cap costs more but can serve as a run cap or a start cap.
All things (except for outliers like the McLaren F1) are built down to a price.