People often confuse the two but “vent cleaning” typically refers to the dryer vent or bathroom fan vents. Dryer vent cleaning should be done once a year to ensure your home doesn’t fall victim to a dryer vent fire. Clogged dryer vents are one of the most common causes of house fires. But they are fires that are 100% preventable if people would just have their dryer vent cleaned on a yearly basis. The same for bathroom vents which so often get forgotten, the too need to be be cleaned at least every couple years.