If you suffer with asthma or a dust allergy, the filtration system should be an important factor to determining which vacuum cleaner you'll buy. This is because the filtration system will determine the size and number of dust particles that'll be in the air when it is exhausted out of the vacuum.
Wattage is an important consideration because motor power alone does not guarantee better suction: it depends on the overall design of the unit. If a vacuum cleaner has a high wattage, the motor is more powerful.
When it comes to vacuuming small or awkward areas quickly and conveniently, there's nothing quite like a hand held vacuum. A cordless hand held vacuum cleaner knows no boundaries and with an endless list of uses, once you buy a hand held vacuum, you'll wonder how you ever lived without it.