Condensation vs Nuaire Drimaster

Condensation vs Nuaire Drimaster

Author
Discussion

robemcdonald

8,811 posts

197 months

Thursday 22nd October 2020
quotequote all
loughran said:
robemcdonald said:
There is quite a lot more to it than you suggest.
To be clear the drimaster isn’t one of my products, so reducing sales will have little impact on my plans for global domination.

But to play along let’s have a look at some of your issues.

You say 50l/s is easy to achieve with an in-line fan. It really isn’t. You need to consider static pressure for a start. 50l/s at free air? Maybe with a filter and duct? Not so easy.
What type of fan are you going to use? Axial or centrifugal? What type of blade? Forward or backward curved?
What filters are you going to use? How are you going to make them easy to replace?
And then you need to consider noise and vibration...
I can see that having a fan in the roof space is a really good idea, it's going to be relatively warm and dry up there and the air introduced into the main house would be warmer and dryer than air brought directly from outside. Also having the fan in the loft will muffle a lot of the noise the fan may produce.

I don't have a loft in my house so I'm thinking a Flatmaster is my only option. It'll bring air in through a hole in the wall and positively ventilate my house.

Plan B would to be to buy one of these.

https://www.screwfix.com/p/vent-axia-acm100t-21w-i...

Similar noise level to the Flatmaster at 22 db/3m. Plenty enough pressure at 61 l/s... a bit difficult to filter but then what are we actually filtering ?

Just thinking out loud.
Just to clarify:

61 l/s is a flow, not pressure.

The acoustic data quoted on the website is dBA @ 3m, so is the noise breaking out of the fan casing as opposed to the noise that comes out of whatever method you choose to distribute it to the dwelling.

You filter the air for the same reason you use any filter. To remove the crap and improve air quality.



loughran

2,755 posts

137 months

Thursday 22nd October 2020
quotequote all
So the Ventaxia moves more air more quietly.

Aside from the filtration what does the Flatmaster do that the Ventaxia doesn't ?

MJNewton

1,736 posts

90 months

Thursday 22nd October 2020
quotequote all
loughran said:
So the Ventaxia moves more air more quietly.
I'd be very surprised at that. From reading the thread these Nuaire PIV's are near inaudible in use but you couldn't possibly say that about the exhaust port of a 100mm extractor fan no matter how 'quiet' it might claim to be. I don't think I'd want such a thing running 24/7 in my house?

Edit: According to the full specs the noise rating for the exhaust port on the Vent Axia is actually 27/34dBA (low/high speed) @ 3m. The 22dB is just what leaks out of the side.


Edited by MJNewton on Thursday 22 October 21:02

robemcdonald

8,811 posts

197 months

Thursday 22nd October 2020
quotequote all
loughran said:
So the Ventaxia moves more air more quietly.

Aside from the filtration what does the Flatmaster do that the Ventaxia doesn't ?
Yup you’ve 100% got it. You should definitely buy that fan.

robemcdonald

8,811 posts

197 months

Thursday 22nd October 2020
quotequote all
MJNewton said:
loughran said:
So the Ventaxia moves more air more quietly.
I'd be very surprised at that. From reading the thread these Nuaire PIV's are near inaudible in use but you couldn't possibly say that about the exhaust port of a 100mm extractor fan no matter how 'quiet' it might claim to be. I don't think I'd want such a thing running 24/7 in my house?

Edit: According to the full specs the noise rating for the exhaust port on the Vent Axia is actually 27/34dBA (low/high speed) @ 3m. The 22dB is just what leaks out of the side.


Edited by MJNewton on Thursday 22 October 21:02
Does it quote 27/34 dBA in the literature? (I didn’t look). If it did it maybe a mistake. You can’t really measure an average on an open inlet or on duct noise.

loughran

2,755 posts

137 months

Thursday 22nd October 2020
quotequote all
robemcdonald said:
loughran said:
So the Ventaxia moves more air more quietly.

Aside from the filtration what does the Flatmaster do that the Ventaxia doesn't ?
Yup you’ve 100% got it. You should definitely buy that fan.
I was hoping you were going to convince me to buy your product.

sidekickdmr

5,078 posts

207 months

Thursday 22nd October 2020
quotequote all
We have one of these, the heat, and it was great, however we have had to turn it off, the loft in my 1700's cottage is a bit stagnant and smelly!

Anyone else had a similar issue and have any tips?

MJNewton

1,736 posts

90 months

Thursday 22nd October 2020
quotequote all
robemcdonald said:
Does it quote 27/34 dBA in the literature? (I didn’t look). If it did it maybe a mistake. You can’t really measure an average on an open inlet or on duct noise.
Yes, along with the spectral breakdown (pg 165).

xyz123

998 posts

130 months

Thursday 22nd October 2020
quotequote all
sidekickdmr said:
We have one of these, the heat, and it was great, however we have had to turn it off, the loft in my 1700's cottage is a bit stagnant and smelly!

Anyone else had a similar issue and have any tips?
Sounds like very little ventilation in loft.. .

robemcdonald

8,811 posts

197 months

Thursday 22nd October 2020
quotequote all
loughran said:
robemcdonald said:
loughran said:
So the Ventaxia moves more air more quietly.

Aside from the filtration what does the Flatmaster do that the Ventaxia doesn't ?
Yup you’ve 100% got it. You should definitely buy that fan.
I was hoping you were going to convince me to buy your product.
It’s not my product..

This thread has a number of accounts from members that have one installed. Unless I’ve missed something there have been no negative reviews. If this independent testimony fails to persuade you I have no chance.

That said; I would be happy to answer any questions you have about Nuaire products.

Edited by robemcdonald on Friday 23 October 08:30

robemcdonald

8,811 posts

197 months

Thursday 22nd October 2020
quotequote all
sidekickdmr said:
We have one of these, the heat, and it was great, however we have had to turn it off, the loft in my 1700's cottage is a bit stagnant and smelly!

Anyone else had a similar issue and have any tips?
Soffit vents probably weren’t a thing back then...

You might want to look at a 365 as that has a ducted fresh air inlet as well.

shady lee

962 posts

183 months

Friday 23rd October 2020
quotequote all
sidekickdmr said:
We have one of these, the heat, and it was great, however we have had to turn it off, the loft in my 1700's cottage is a bit stagnant and smelly!

Anyone else had a similar issue and have any tips?
More ventilation needed

xyz123

998 posts

130 months

Monday 2nd November 2020
quotequote all
Hi Rob- sorry to pester you but any news on the discount codes? Thanks.

robemcdonald

8,811 posts

197 months

Monday 2nd November 2020
quotequote all
not pestering.

i will chase today

xyz123

998 posts

130 months

Monday 2nd November 2020
quotequote all
robemcdonald said:
not pestering.

i will chase today
Thanks.

rfsteel

713 posts

171 months

Friday 6th November 2020
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Interested in the code also, getting fed up with wiping and demoulding my window frames

dirtbiker

1,190 posts

167 months

Friday 6th November 2020
quotequote all
Another one interested here - sounds like it could be just the thing for our house.

Cheers!

The Don of Croy

6,002 posts

160 months

Friday 6th November 2020
quotequote all
sidekickdmr said:
We have one of these, the heat, and it was great, however we have had to turn it off, the loft in my 1700's cottage is a bit stagnant and smelly!

Anyone else had a similar issue and have any tips?
How long did you try it for?

We too had a smelly loft, and that aroma was then ducted into our house...but after time the aroma disappeared. Maybe 4 - 6 weeks.

Plus all the other household smells dissipate quite quickly too.

What I need now is a pair of spare filter bags for a quick swap. Do they sell them separately?

craig1912

3,320 posts

113 months

Friday 6th November 2020
quotequote all
The Don of Croy said:
How long did you try it for?

We too had a smelly loft, and that aroma was then ducted into our house...but after time the aroma disappeared. Maybe 4 - 6 weeks.

Plus all the other household smells dissipate quite quickly too.

What I need now is a pair of spare filter bags for a quick swap. Do they sell them separately?
Exactly my experience and yes they sell the filters separately. Just changed mine after approx 5 years

sidekickdmr

5,078 posts

207 months

Friday 6th November 2020
quotequote all
The Don of Croy said:
How long did you try it for?
about 2 years laugh