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Thread ID: 64607	2005-12-21 00:01:00	Electric fan issue	Greg (193)	PC World Chat

Post ID	Timestamp	Content	User
414361	2005-12-21 22:16:00	Greg, check the length and diameter of the ducting. Anything more than about 1.2-1.5M will restirct the flow, bends additionally restrict flow. Standard flexible ducting that comes with your average bathroom fan is 100-130mm diameter, use 150-200mm instead (you can get adapters). If ducting length is an issue, pop an inline duct fan in, suspend it in the roof space on slightly elastic strapping or some such (make sure you don't have rats up there, they just love chewing on plastic). One of the most over looked issues with domestic air extraction is the location of the inlet. Have a look at the location of the fan in relation to the sources of clean air (doorway, and open window) to foul air, the inlet should be located with the foul air between it and the source of clean air. If that can't be achieved, get it as close as you can to the foul air, otherwise all it's doing is sucking fresh air and plonking it outside. If the vent is located ok, try closing the adjacent window while it is in operation :thumbs: Never, ever vent moist or foul air into a confined space such as a ceiling cavity (apart from the obvious, insulation values can be greatley reduced), always vent to the outside. If the building has eaves, vent through the soffit, where draw (or lack of from wind) is less of an issue and leaks are virtually non-existant, also less aesthetically disturbing tucked away under a soffit than pocking out a wall or roof and cheaper to flash.	Murray P (44)
414362	2005-12-21 23:01:00	I would grab the garden hose and hit them with as much high pressure water as possible. Works great on my drains.... .....Muhahahaha.	Metla (12)
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