Using another clean cloth, apply the DIY cleaning solution to the stain.

In reality, the biggest issue is #2: most manufacturers don’t provide air watt figures for their vacuums.Without being able to compare vacuums using the same rating, air watts becomes much less useful..

Note: Air watts are measured with a clean filter and unobstructed airflow.A clogged filter greatly reduces suction power, which is why it’s important to properly maintain your filters.We’ve written a guide for.

maintaining suction power which may be useful if your vac is losing suction.How Are Air Watts Calculated?.

There are several ways to calculate air watts, but the most common is:.

Power in Air Watts = 0.117354 x Airflow (CFM) x Water lift (inches of water).There are several ways to calculate air watts, but the most common is:.

Power in Air Watts = 0.117354 x Airflow (CFM) x Water lift (inches of water).Where “inches of water” is the amount of pressure during a water lift test, and the airflow is measured in cubic feet per minute (CFM.).

Note: Water lift is a common sealed suction power test for vacuum cleaners.During this test, the vacuum is sealed and connected to water via a tube.