The power consumption of a vacuum cleaner is often given in watts, but some North American manufacturers report it in amperes. To convert this reading into the appropriate voltage, consumers should multiply the current by 120 volts to get the appropriate power consumption. In addition, manufacturers may state the rated input power in airwatts, which are measurements of watts that are converted into airflow. These units are less relevant than the rating of the actual cleaner, which should be based on the amount of dust that the appliance can remove.
The invention of the Pondovac 4 is not attributed to any specific person, but to a group of inventors. In 1905, British engineer Daniel Hess invented a hand-operated vacuum cleaner that utilized a flexible pipe and bellows to generate suction. James B. Kirby created the first powered vacuum cleaner in Chicago in 1868, and used a belt-driven fan that could be manually cranked. However, the Whirlwind had mixed results. The company Bissell Manufacturing Corporation began manufacturing carpet sweepers and later added portable vacuum cleaners to its line of cleaning tools.
The first vacuum cleaner was considered a luxury, but after the Second World War, the cost of these machines dropped and the middle class could afford them, making them a standard part of every household. Various models are available, including robotic vacuum cleaners and larger versions. Several vacuum cleaner models can handle hundreds of litres of dust, and some even have batteries. Most models are powered by the user, while others are powered by moving power.
The most popular types of vacuum cleaner are upright models and canisters. Upright vacuums are easy to handle and can be maneuvered from one room to another. Handheld vacuums are ideal for light cleaning, and stick and handheld models are suitable for bare floors and carpets. And there are also robotic vacuums, which require periodic emptying of the dust bin. A vacuum cleaner can be either a corded or a cordless machine, depending on its power.
Upright vacuum cleaners are popular in the United States, Britain, and most of the Commonwealth countries. They are rare in some Continental European countries. An upright vacuum is comprised of a cleaning head, a handle, and a vacuum bag. Most upright vacuums use a rotating brushroll to pick up dust and debris. The wand is adjustable and has a long reach, so you can easily reach high places and low-pile rugs with one.
While upright vacuums are often the best option, they tend to be bulkier and noisier than canister models. However, they have the added benefit of allowing you to maneuver in tight spaces without a cord. A canister vacuum is generally less expensive and less bulky than an upright vacuum. You can even control it with a smartphone app. A central vacuum is easier to maneuver, is more silent, and does not require emptying of the dirt chamber as frequently as an upright.