You are right not to put the fan in the floor and you should not dump the air under the floor.

Can you put a bathroom exhaust fan in the floor?

Using a floor duct vent
In bathrooms without outside access, duct vents can be used to ventilate bathrooms if ceiling venting is not possible. A floor duct vent is a special machine that uses floor grates to remove moisture and bad air from your bathroom.

Where should a bathroom fan be mounted?

You can place the fan directly over the bathtub or shower base, but it’s sufficient to position it anywhere near the bathing area. If the bathroom has both a tub and shower, or a shower and a whirlpool tub, the fan should go somewhere between the two fixtures.

Where should I position my exhaust fan?

The fan should be installed away from the air intake source, preferably diagonally opposite from the door or windows or in such a way that the fresh air travels maximum space before it is sucked out. It will allow the fresh air to circulate in the whole bathroom before it removed by the exhaust fan.

Can I run a bathroom vent down?

In general, you can try venting a bath vent fan “down” but the combination of down-direction, elbows, and total run length may mean that it’s ineffective. Take a look at the installation manual for your fan brand and model. The manufacturer will give guidance on the total duct length permitted.

Can you vent through the floor?

You can vent a range hood via wall horizontally or via ceiling or via floor also. Wall mount range hoods or under cabinet range hoods are vented horizontally/vertically, although island hoods may be vented vertically.

Can you put an exhaust fan above a shower?

In summary, you actually should install your bathroom exhaust fan in your shower, preferably right over it, where the hot moist air flows directly first. Make sure your electrical circuitry is GFCI protected, and that the fan is rated for shower use.

What is code for bathroom exhaust fan?

The model building codes adopted by most jurisdictions typically require bathroom ventilation to be provided either by an operable window (3 sq. ft. or greater) or by mechanical means – a bathroom vent fan (20 continuous or 50 cfm intermittent, vented to the building exterior.

Does a bathroom extractor fan need to be on an outside wall?

Ideal for a bathroom with no external walls. Often including more switching and operating options, Centrifugal fans can be set to run at a low rate so there is always some flow through the room, even when there is no-one in there.

Is it OK to vent bathroom fan into soffit?

A bathroom fan can be vented through soffit so that the warm air from the bathroom comes out through it and goes outside. However, It is important to keep in mind it can not be vented into the soffit, as this will lead moisture back into the attic.

Should bathroom fan vent into attic?

No, you should not vent a bathroom fan directly into an attic. The problem with venting into the attic is that the moisture-rich air may form droplets on the wood sheathing, insulation, rafters, and ceiling joists, leading to mold growth.

How far can you vent a bathroom fan?

Generally a 4 inch flex duct can carry a fan exhaust for up to 25 ft. Most codes require that.

Should vents be in ceiling or floor?

Based upon your geographic location, will heating or cooling needs prevail? As a general rule, ceiling mounted vents offer better cooling potential, while floor vents offer superior heat delivery.

Where should floor vents be placed?

Registers should be placed in the middle of the external wall (in the floor or low on the wall); if there are two external walls, both need registers in the middle. (If the room is tiny, one duct may work, even if there are two external walls.)
3 июл. 1992

What can I use instead of an extractor fan?

10 Things to Do If You Don’t Have a Range Hood or Vent

  • Use a window fan. …
  • Use a portable HEPA air filter. …
  • Use a fan in another room, like the bathroom. …
  • Get a grease splatter guard. …
  • Wipe down your kitchen cabinets frequently. …
  • If you paint your kitchen, use a satin or semi-gloss finish, or choose scrubbable paint.

Is an extractor fan a legal requirement UK?

In short the regulations require: UK bathrooms must be ventilated with either a window or an extractor fan. If there is only a toilet, a window alone is sufficient but in new-build bathrooms with a bath and shower, mechanical ventilation in the form of an extractor fan is required.

Do you really need an extractor fan?

In short – yes, you do need an extractor hood. Since April 2006, building regulations state that extract ventilation must be fitted in a kitchen which has been built from that date onwards. A kitchen will meet these regulations if the unclean air is extracted externally.