Operating at a maximum of just 24dB(A) and with a compact design, MF100S is ideal for applications where installation and extraction needs to be powerful yet discreet. I haven't investigated at all yet, but one thing he did fit is an isolator switch for the fan, so that will make working on it easier. hope you don't mind me resurrecting an old thread, but I have an MF100T that has just stopped working. watts power consumption (low / mid / high speeds). 50 / 60 / 68 litres per second / 180 / 216 / 245 cubic metres per hour extraction rate (low / mid / high speeds)

Had already had an idea to slope the ducting down and out of the house, so pleased to see that is mentioned above. Total distance should be radically reduced anyway, and there should be no turns apart from necessary ones, into the fan and out of the house, although I am thinking to mitigate at least the one out of the house by just using a 45 degree elbow, and then cutting the pipe going out at an angle to give a flat exit if that makes sense.

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The Manrose 4 inch inline fanprovides a high extraction rate whilst keeping noise to a minimum. The mixed flow created by the twin blades enables the fan to pull more air than a conventional extractor fan making it ideal for use in bathrooms and other areas of high humidity. The Manrose 4 inch inline fan provides a high extraction rate whilst keeping noise to a minimum. The mixed flow created by the twin blades enables the fan to pull more air than a conventional extractor fan making it ideal for use in bathrooms and other areas of high humidity. Easy installation and maintenance - Fan assembly easily removed from rigid ducting installations using specially designed construction

High air flows are achieved through flexible duct. Compact overall dimensions. 3 speed fan settings, selectable at installationHigh quality ball bearing, long life motors, continuously rate and warranted for a minimum of 30,000 hours or 3 years.

Rated to IPX4. Easy installation and maintenance with the fan assembly easily removed from rigid ducting installations using the specially designed construction Genuine Manrose branded product. High quality ball bearing, long life motor, continuously rated and warranted for a minimum of 30,000 hours or 3 yearsThis particular model; the MF100S is the basic On/Off version. It can be paired with Manrose 1361 remote humidistat and Manrose 1350 speed controller. Key Features I would say that a fan rated somewhere around 200m3 per hour is probably sufficient provided it’s installed in a way that means it can get somewhere close to that in use. The easiest way to achieve that is to make the ducts and grills bigger. But don’t go too large as then the air speed will be very low and this could lead to condensation on “dead spots” for example on bends. We've always been dissapointed with the performance, especially after he told us it was overkill, and we've put it on maximum timer and maximum speed.

Looking at the gap approaching the eaves, it would seem it is too narrow to take round pipe, the previous fitter just kind of stuffed the flexible pipe down there, so I think I will have to run 125mm pipe from the fan, and then annoyingly switch to a rectangular style with a convertor to enable it to get through the eaves and down to the soffit. Over the years I’ve always used 4” fans personally and never had a problem with excessive condensation or steam (except when something needs cleaning or clearing) despite the lengthy showers the family seem to like. Easy installation and maintenance with the fan assembly easily removed from rigid ducting installations using the specially designed construction He put the vent in the middle of the bathroom, instead of above the shower, and has placed the fan a decent distance away from the actual vent hole in the ceiling, and then ducted to the side of the house - he's also used (to much) flexible ducting........

Manrose MF100S Features

The only negative I can see might be noise, in that the fan will be directly above the shower (Currently it is above the landing cupboard), BUT while the shower is on you won't hear it, and hopefully if it's way more efficient I won't need to have the timer at max for 25 minutes, perhaps 10 would do. And re-visiting my mention of the bigger more beefy fans, would it be wise/sensible to go for 150mm ducting and then use a reducer if I can resurrect the current 100T. That's how it stands currently, the red pairs of lines are the current ducting - he decided to duct to the side of the house, I am proposing switching to the front, but joists might make it as sensible to go to the same side. Fitted with a high quality ball bearing motor, MF100S is continuously rated and guaranteed for a minimum of 30,000 hours or 3 years. We have a small bathroom, big standard 1930's one, so do you think the 100T when ducted properly should be sufficient?