The list of diagnostic tests mentioned in various sources as used in the diagnosis of Pregnancy includes: 1  Urine human chorionic gonadotropin (HCG) tests - these are the basis of home pregnancy tests. 2  Home pregnancy tests. 3  Pregnancy blood tests.
Quick Answer. Ductless bathroom fans remove odors and germs by filtering the air through an activated charcoal filter. These fans have a lower blade speed, also called a tip speed, which allows more air to be sucked up into the filter. Once cleaned, the air is re-circulated back into the bathroom.
Whenever possible, your goal is to install an extractor fan that is manufactured by a trusted company such as Greenwood, Silavent or Xpelair that comply with all building regulations. However, if you absolutely cannot add the duct work to your bathroom, a ventless bathroom fan is your next best option. By having one of these types, you do not need to cut a hole to install the fan. It is easy and it fits on the wall and ceiling.