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As the vacuum’s air must pass through the filter, any clogging is likely to reduce the PD1420LP’s suction power and cleaning performance.. For this reason, we recommend cleaning the Black+Decker filter regularly to maintain your vacuum’s performance.. How to Clean The PD1420LP’s Filter.

– This is related to the.actual air flow.

of the vacuum cleaner, taking into account air leakages and filters..In other words, air watts are a much more useful measure than motor wattage when buying a vacuum cleaner..While a higher wattage can boost air watts, the amount of increase depends on the motor’s efficiency, whether the vacuum is fully sealed, and which filter is being used.. That means a higher wattage.

doesn’t mean that a vacuum provides better suction power.This is why the EU brought in new rules that limit a vacuum cleaner’s motor power to 900W.

Until this change, vacuum cleaners were being built with more and more powerful motors (2500W+ in some cases), yet were inefficient and loud..

Note: The efficiency of a vacuum is usually defined as the ratio of air watts to input watts.But it will drain the battery, so it’s best to save it for stubborn dirt.. We’re impressed with the consistent power of this vacuum and how the suction stays strong, even when the bag is getting full.

It’s also fairly quiet, even with the brushes spinning.. Carpets.The Halo Capsule provides excellent performance and dirt pick up on most carpets – but only when using the two higher power modes.. For regular short pile carpets, the Capsule picks up most mess in a single sweep.

It struggles a bit more with thick carpets, and the floorhead sometimes doesn’t grip as well as we would like..Even so, we think the Halo provides decent carpet performance considering the low price of this cordless.. Hard Floors.