Bathroom exhaust fan not pulling air. But some older homes have no supply register in the bathroom so the undercut of the bathroom becomes the sole source of incoming air to replace the air that is exhausted by the fan. If youre facing the problem of an exhaust fan thats blowing air down. Air must blow in the right direction through the exhaust fan. This meant that no air could be pulled out of the bathroom through the fan.
The smoke should flow quickly into the fan. The amount of energy lost is insignificant in the overall scope of energy use when compared to the health advantages of using the fan. The old fan probably installed in the 1990s never did anything but use electricity to make noise for. So the bathroom fan does important work. In many cases the space between the bottom of the door and the floor is adequate but in some cases an additional air make-up source must be installed to allow the fan to operate at peak performance such as an additional grille installed. Range Hood installed but itsblowing not sucking air.
May not need to replace all of it just the obvious part but what a pain in the buttski that is going to beyes. The fan pushes the moist air you create from taking a shower outside so you dont rot everything in your bathroom. If the plastic bag fills with air immediately your bathroom fan is in working order. Oct 5th 2009 244 pm. Most bathrooms are fitted with a 4 fan which is just not big enough to properly vent even a smallish bathroom especially as most people seem to set the timer on the fan to about 5 mins.
If the door is closed you restrict air movement and your fan works harder and longer. With smooth and consistent airflow the fan will no longer have a problem pulling air from the bathroom making it clean safe and comfortable for you to enjoy. Air must blow in the right direction through the exhaust fan. Range Hood installed but itsblowing not sucking air. Go outside and find the vent. Besides that the vent duct might be undersized blocked or flattened.