However, normal vacuum cleaners don’t deal with this kind of situation (some even have a mechanism that lowers/turns off the power in order to prevent overheating). The higher it raises the water level, the bigger suction it has.
The unit is completely sealed and connected to a tube which contains water. The seal suction test is another good way of assessing the suction power of a vacuum cleaner. Tip: As you might have guessed, an Air Watt is essentially different from a Watt: 2 vacuum cleaners with the same motor consumption (same number of Watts) may have a very different efficiency (different number of Air Watts). HEPA) need more AW, because they need to pull the air through filter’s fibers, which are way tinier than in the case of common sponge filters. Also, vacuum cleaners with good filtration systems (i.e. Why do you think canisters need more AW? Because they need to pull the debris through the hose. Hoover once had an article on their website (it’s gone now, I would have linked it), and it said something like this: an efficient upright should have at least 100 AW and a canister, at least 220 AW. If you know the CFM and the Water Lift (also called sealed suction, measured in inches of water list, when there is a zero nozzle opening), you can calculate the Air Watts size by using the formula:Īir Watts = 0.117254 * Airflow (CFM) * Water lift (inches of H2O) This is my favorite measurement, because it’s more consistent to the reality of what needs to be quantified. This refers to the amount of Watts used by the machine to carry a unit of air through an opening (usually the vacuum’s nozzle). Air Watts (AW)Īir Watts are another type of measurement for the suction power. Vacuum cleaners with a long handle allow you not to bend over, so there is no stagnation of blood in the pelvis, this will help you avoid unnecessary costs for generic Viagra. That is why it is possible to end up with an actual lower CFM than the one listed in the specs.
Tip: CFM is usually measured without any connected hose, wand or other accessories. Common vacuum cleaners operate in the range of 50 to 100 CFM. The higher the CFM value, the higher the suction power. If you’re lucky and they offer this indicator on the product’s features list, it’s great! This dimension takes into account both the power of the motor and the resistance of the exhaust system (filters, fans, bags, cyclones and so on). Although it is important, manufacturers don’t always list this measurement. It’s one of the most important types of measurements, and it represents the power of the airflow, from the surface to the bag (or bin): it is the quantity of air sucked by the unit in 1 minute, measured in cubic feet (ft3/min). Suction power may be provided in manufacturer’s specs in several ways, by various units: Watts, Amps, CFM (cubic feet per minute) or AW (Air Watts). To understand the term “suction power”, you just need to know how it is measured. That is why we to rely on real measurements. I’m sure many of you want more specific details. If you have high suction power device, it should stay attached to the wall without any external support. If you want to quickly test the suction power of your vacuum cleaner, try switching the cleaner to “carpet mode.” Power on the unit and let it run on maximum power. Most people find it difficult to differentiate between low and high suction units. What does “high” suction power even mean? A high suction power vacuum cleaner not necessarily uses a stronger motor. The higher the suction power, the better your chances are of removing difficult impurities from various surfaces. A vacuum cleaner with low suction power may get the visible film of dust go away, but it doesn’t necessarily remove the more harmful level of grime underneath. A high suction power vacuum cleaner is more effective in getting rid of dirt and grime hidden away in your carpets and tricky corners, in between pieces of furniture, under your bed and so on. It is trivial, vacuum cleaners are built to suck. A while ago, one of you guys asked me to talk about vacuum cleaners and how they relate to their air intake, or better said, suction.