2 inline extract fans

[Noob2013]

Hi all,

Just after a bit of advice.

I have split my bathroom into two so I now have a bathroom and shower room next to each other.

I would like to fit an extract fan in each room but only with one hole to vent outside.

What's the best option?

Would I need 2 extract fans joined with ducting and some inline shutters so prevent backdraft?

Thanks

 

[Octopus]

2 holes or risk sharing smells etc with whoever is next door.

 

[Noob2013]

Would that happen if it has back draft shutters and run timer?

 

[Octopus]

Would that happen if it has back draft shutters and run timer?

Your house or a customers??

 

[TJ Anderson]

If it is your own house, definitely give it a go. With shutters, I would imagine it would be fine to be honest.

 

[123]

Could go from each room into a tee then duct to the fan. It would reduce the extract rate of the fan in each room so would need a good inline fan at the very least.

What's the issue with having a second hole?

 

[marc8]

Hi
you can run 2 bathrooms off the airflow inline fan put the branch before the fan only problem you have now is the switching unless you are happy to turn on both lights at same time, unless you put in small relay to stop that.
If fan is before the branch then it will extract from both rooms at same time can balance the shower ducts with vein Ommieter (hope I spelt that right) meter & then this will ensure they will extract at same rate.

 

[Noob2013]

Yeah its in my own house.

2 holes isn't practical due to ladder position restrictions but could be done if required.

Just after easiest option

I've also read that it needs to be pretty powerful for 2 rooms.

Any idea on the rate required for 2 rooms?

 

[Geordie Spark]

2 holes or risk sharing smells etc with whoever is next door.

That's what the backdraught shutters are supposed to prevent.

 

[Geordie Spark]

Could go from each room into a tee then duct to the fan. It would reduce the extract rate of the fan in each room so would need a good inline fan at the very least.

What's the issue with having a second hole?

Tee is not as good as a "Y" from a smooth airflow point of view.

 

[jackhammerJIM]

The highest rate i have come across in 4inch is the manrose mf100t . 68 litres per second .

Haven't used it over 2 rooms so can't comment on that .

 

[Geordie Spark]

Yeah its in my own house.

2 holes isn't practical due to ladder position restrictions but could be done if required.

Just after easiest option

I've also read that it needs to be pretty powerful for 2 rooms.

Any idea on the rate required for 2 rooms?

>>>>>>>> https://www.google.co.uk/search?q=c...l2.24497j0j7&sourceid=chrome&es_sm=0&ie=UTF-8

 

[marc8]

5" does 153 Ls airflow & I think there is a high pressure unit that does more but I don't think its airflow

 

[Noob2013]

Ideal thanka everyone, will have a look at the calculator.

The 2 rooms are pretty small so shouldn't be a problem.

 

[R G]

You need a Vortice Lineo in line fan , I have fitted a good few and are powerful...

 

[Marvo]

Yeah its in my own house.

2 holes isn't practical due to ladder position restrictions but could be done if required.

Just after easiest option

I've also read that it needs to be pretty powerful for 2 rooms.

Any idea on the rate required for 2 rooms?

You can use 2 fans into a common discharge duct but you should go up at least one duct size after the point they join and you would need inline shutters on both rooms. You can also go with a common fan for both rooms but the wiring can get a bit tricky depending on existing layout and you'd need an adjustable diffuser in at least one of the rooms to give you some adjustment on the air balance. The room with the shower I'd be working on at least 20 room volume changes per hour and probably 15 changes on the other room.

 

[TJ Anderson]

Fit one of these bud. No smells, guaranteed.

 

[Geordie Spark]

Have you considered using PIRs to control the lights?? That makes them independent of the fan and each other.

 

[jackhammerJIM]

or one of these .

The vents would look lovely

 

[Geordie Spark]

Fit one of these bud. No smells, guaranteed.

Guaranteed to rip the bog roll right off the holder and hoy it out into the street before ye've even thought about using it!!

 

[TJ Anderson]

or one of these .

Is that guy in the picture working or being disturbed carrying out a burglary lol

 

[Essex_]

Why don't you fit 1 in-line fan in the loft and just put vents in the two rooms. Wire it so either light turns on the fan. Plus the extract will be very good.

 

[jackhammerJIM]

Is that guy in the picture working or being disturbed carrying out a burglary lol

Thats me you cheeky devil !

 

[Geordie Spark]

Thats me you cheeky devil !

So it IS a burglary??

 

[jackhammerJIM]

So it IS a burglary??

Its a drying unit Geordie on a biomass boiler .

Burglary of taxpayers money

 

[HandySparks]

Looks like the start of a fan-measuring contest. :biggrin:

 

[Noob2013]

Why don't you fit 1 in-line fan in the loft and just put vents in the two rooms. Wire it so either light turns on the fan. Plus the extract will be very good.

Would that just require a switch wire from each light to the fan?

I've read about relays being installed.

 

[shanky887614]

the ushanka hats are one of the warmest hats you will ever wear.

one of these would work (ahu)

 

[Geordie Spark]

Would that just require a switch wire from each light to the fan?

I've read about relays being installed.

Get your pencil & paper and draw that circuit out & see what you would end-up with.

 

[shanky887614]

Get your pencil & paper and draw that circuit out & see what you would end-up with.

only if he wants each light to go on together unless he uses a relay?

 

[Essex_]

Would that just require a switch wire from each light to the fan?

I've read about relays being installed.

Yes. A relay where either switch line will pull in a common switch but remain separate from one another or you will get the switch in the toilet switching the light in the shower and vice verser.

 

[HandySparks]

the ushanka hats are one of the warmest hats you will ever wear.

Eh? Where did that come from?

 

[shanky887614]

or one of these .

The vents would look lovely

Eh? Where did that come from?

the genuine russian version of the hat above

 

[HandySparks]

Ah, yes. As worn by Sean Connery while standing in the conning tower of the Red October.

 

[jackhammerJIM]

Engage caterpillar drive

 

[Geordie Spark]

Eh? Where did that come from?

Here maybe?? http://www.amazon.co.uk/Clothing-Us...randtextbin=Ushanka Hats&page=1&rh=n:83450031 .......... :rolleyes2:

 

[willy fixit]

One of these Circular 'Y' Piece White 100mm | 100mm Ducting | NoLinkingToThis and two of these Manrose In-Line Centrifugal Shower Fan Kit Chrome 100mm | Shower Fan Kits | NoLinkingToThis they have built in shutters - fitted loads with no complaints!

 

[Noob2013]

One of these Circular 'Y' Piece White 100mm | 100mm Ducting | NoLinkingToThis and two of these Manrose In-Line Centrifugal Shower Fan Kit Chrome 100mm | Shower Fan Kits | NoLinkingToThis they have built in shutters - fitted loads with no complaints!

Was looking at those yesterday.

As inline fans are mounted in the loft, I'm assuming they can be fitted in any zone of a bathroom and only require the basic IP rating?

 

[marc8]

Don't forget if you are running from a hot space to a cold space use insulated duct work or you could cause condensation in the pipe work leading to mold issues.
Even rigid pipe should be insulated, also depending on your run & angles you may even need a condensate trap in the pipe run.
All things to weigh up.
Good luck

 

[Essex_]

Was looking at those yesterday.

As inline fans are mounted in the loft, I'm assuming they can be fitted in any zone of a bathroom and only require the basic IP rating?

If they are in the loft they are not in the bathroom.