Anyone got a continuous (trickle) bathroom extractor? And/or a PIV?

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We’re mid refurb of a Victorian house, up till now ventilation has been provided by leaky windows and ancient noisy bathroom fans.
After the refurb things will hopefully be a bit more airtight but that means we need to consider ventilation more.

We are considering putting a PIV unit (positive input ventilation) into the loft. Has anyone got one of these?

As I understand it, the idea is that it slowly pushes new air from the loft (which is vented) into the house all the time. In turn this forces old stale air out of any cracks in the house. We will still have some old windows and doors so still quite a few outlets for the old air. Any experiences with PIVs welcome.

Also, to avoid having noisy extractor fans in the bathrooms and utility room, I’m considering having quieter continuous/trickle fans instead. These would be wired to a timer so they are off at night but on for say 16 hours a day. Again has anyone got these rather than the more usual type of fan which is only on when the bathroom is being used? Are they effective at clearing a bathroom?

Thanks

We have the continuous trickle ones in our bathrooms - new build house.

I've turned it off in the big main bathroom as its big enough to not need it, but the others have them and they are pretty effective! our en suite gets a bit steamy but is cleared really quickly.

Thank you! That’s very helpful. How noisy do you find it?

Also do you know what brand it is by any chance?

Not sure on brand I can check later! It’s not noisy when it’s on the trickle setting, and they are adjustable so you can turn the fan up or down on each setting. They are fairly noisy when on but it’s helpful as then I know when DS or DH has left a light on 😂

Ah ok so is it one of those ones that’s on low all the time but on high when the light is on? So kind of a hybrid... I was picturing one that is only ever on low but not sure if it would be enough.

Yea but you can adjust it to be on low if that helps?

Sounds good thanks. I didn’t know there were adjustable ones

I've had a PIV in the bathroom many times. But it can be uncomfortable.

Sorry :)

Glad - ah but was it noisy?! (Actually don’t tell me)

Yes.