While the cfm refers to how much air the motor can move the suction measurement that tells us what the vacuum can pull or lift up is determined by using water hence water lift.
Vacuum cleaner water lift.
A very thorough guide to air flow as well as how it is measured in different vacuums can be found here.
Be sure and take two bags with you a dirty and a clean so that you can also see that your vacuum doesn t lose suction after 10 oz of dust it loses airflow.
It is not always useful in all vacuum cleaners.
Water lift inches of h2o the seal suction test is another good way of assessing the suction power of a vacuum cleaner.
A common air flow measurement is 125 cfm.
If you put water in a vertical tube and put a vacuum hose on top how many inches high will the vacuum pull the water.
Purchased to test our companies vacuum suction power and provided valuable data.
This wet and dry cleaner with cyclonic water filtration system provides the best filtration for household allergens and dirt.
With its bagless and top air out design this vacuum efficiently filters out sucked in dust and immediately traps dirt particles into the water.
For the water lift test air flow is absent because the water causes a sealed suction which allows you to measure the pure suction force of the motor.
Take your vacuum in to the nearest vac shop to test the water lift.
The more air flow through a vacuum the better.
Use of water lift.
The water acts as a filter and also the canister as this is where the dirt collected is deposited.
Water filtration vacuums have compartments to hold water where the air is passed before it is released back into the house.
Vacuum cleaners with more inches of water lift will have an easier time picking up sand and other heavier soils from carpet and flooring.
The unit is completely sealed and connected to a tube which contains water.
If the level the water rises is high so is the power suction.
Some have a different mechanism to reduce chances of overheating.
Make cleaning a breeze with the kalorik water filtration vacuum cleaner.
Don t ask for an airflow meter as they probably won t have one.
This measurement gets its name from the following experiment.
Suction is measured in terms of water lift also known as static pressure.
This item is placed on end of vacuum suction hose and measures suction water lift power.
Find the water filtering vacuum cleaner that is right for you.
Use of watts and amperage.
If you are looking to test your vacuum suction power this works perfectly and an 80 inches of water rate is noted to be a very solid rate.
The higher it raises the water level the bigger suction it has.
Also known as seal suction and it involves sealing the unit and connecting a tube containing water.
Water lift is what gives a vacuum cleaner the power to pick up or lift debris from the floor surface while airflow then removes it to the dust bag.