Both of these 2 Dyson upright vacuum cleaners are small and lightweight, they are lighter to carry up/down stairs and around your home, and save more storage space than a Dyson’s full size upright vacuum such as the Dyson Ball and Cinetic Big Ball. But with less suction power, smaller dust cup.
They are similar but not identical to each other.
The Ball Compact has a suction power of 128AW versus 150AW on the Small Ball.
Both are light, the Ball Compact weighs 11.6 lbs whereas the Small Ball weighs 12.15 lbs.
The Ball Compact has a cord length of 25ft. versus 31ft. on the Small Ball.
Ball Compact dimensions are 30.1″ x 11″ x 13.9″.
Small Ball dimensions are 31.8″ x 11.0″ x 14.1″ .
The handle on the Small Ball is detachable whereas the Ball Compact handle is not removable.
The Small Ball has a suction control slider on the cleaner head whereas the Ball Compact has no suction control.
The Ball Compact features Whole-machine HEPA filtration whereas the Small Ball does not feature HEPA filtration.
Two tiers of cyclones increase airflow for powerful suction and capture fine dust.
Washable lifetime filter.
0.21 gallon bin capacity.
Self-adjusting cleaner head adjusts between carpeted surfaces and hard floors automatically.
Extendable handle collapsed for compact storage.
One button press to empty bin.
Backed by 5 year limited warranty.
ON/OFF button is located on body of the vacuum.
If you are an allergy sufferer, the HEPA filter might be the biggest thing you want to take into consideration, the Ball Compact should be better since it has Whole-machine HEPA filtration.