Condensation vs Nuaire Drimaster

[Trustmeimadoctor]

its dry here yet humidity outside is 84% at 15c yet inside its 53 to 63% between 18.5c and 21.6

[B'stard Child]

Oakey said:

Got some of these yesterday.

Should I be concerned my loft is currently 16c but 71% humidity or is that about right for a wet day like today?

My loft dropped to 14 deg last night and was 81% RH

Currently it’s 18 deg and 70 % RH

It’s also raining!!!!

This was quite useful

http://www.dpcalc.org/

Change the Temp units to Deg C

Edited by B'stard Child on Friday 22 September 15:53

[Trustmeimadoctor]

just stuck a spare in my loft 22.1c 56.6%

[DKL]

Does anyone have one of these under a thatched roof.
I'm not aware the loft smells but I might need to check!

[Oakey]

B'stard Child said:

My loft dropped to 14 deg last night and was 81% RH

Currently it’s 18 deg and 70 % RH

It’s also raining!!!!

This was quite useful

http://www.dpcalc.org/

Change the Temp units to Deg C

Edited by B'stard Child on Friday 22 September 15:53

Can't use the sliders in my phone!

:Hehe:

[theguvernor15]

Just found this topic of interest, we get condensation in the winter & i was looking at a dehumidifier before i came across this topic.

We're having a loft conversion done in the new year so will lose all of our loft space, so i'm unsure how we can make this work?

[hamish88]

theguvernor15 said:

Just found this topic of interest, we get condensation in the winter & i was looking at a dehumidifier before i came across this topic.

We're having a loft conversion done in the new year so will lose all of our loft space, so i'm unsure how we can make this work?

I'm in a bungalow with loft conversion so have very little loft space either side of the room. My thinking was even if it did not work which it does, the bare minimum I will have isfresh air . Also it works much much better than I have anticipated with the damp smell nearly all banished . My wife woke up this morning and said she feels much fresher and without her daily headache.

[NickXX]

B'stard Child said:

What battery life do you get out of those??

I've got two wifi enabled LCD displays that do temp and humidity and were a lot more than those but my god they chew thro batteries - less than 1 week is typical and they take 3 x AAA

I've been running them on rechargeables but it is a pain having to recharge so frequently

Oh wow - these are 1x AAA (also using rechargeable), and I think at least 2 months. I'm also checking them daily, which I assume drains the battery a bit when pulling the data.

[NickXX]

B'stard Child said:

My loft dropped to 14 deg last night and was 81% RH

Currently it’s 18 deg and 70 % RH

It’s also raining!!!!

This was quite useful

http://www.dpcalc.org/

Change the Temp units to Deg C

Edited by B'stard Child on Friday 22 September 15:53

That's a helpful tool, thanks. In the 20-22c range that our bedrooms have been at in the last few months, we are still getting up to high 60s during the night - is anyone else getting the same? Only concern is that the tool suggests that it would be a mould risk once over 70.

[B'stard Child]

NickXX said:

B'stard Child said:

My loft dropped to 14 deg last night and was 81% RH

Currently it’s 18 deg and 70 % RH

It’s also raining!!!!

This was quite useful

http://www.dpcalc.org/

Change the Temp units to Deg C

Edited by B'stard Child on Friday 22 September 15:53

That's a helpful tool, thanks.

No probs - sharing is good

NickXX said:

In the 20-22c range that our bedrooms have been at in the last few months, we are still getting up to high 60s during the night - is anyone else getting the same? Only concern is that the tool suggests that it would be a mould risk once over 70.

Nothing over 60 in the rooms that I've been monitoring - what l/min are you pushing in with the PIV

I started mine at about 40 l/min based on guidance of 4 bed put it on speed 4 but it's been backed off down to 20 l/min as that gives me 0.25 ACH (or 1 ACH every 4 hrs) and the RH levels stay pretty flat and stable

[B'stard Child]

NickXX said:

B'stard Child said:

What battery life do you get out of those??

I've got two wifi enabled LCD displays that do temp and humidity and were a lot more than those but my god they chew thro batteries - less than 1 week is typical and they take 3 x AAA

I've been running them on rechargeables but it is a pain having to recharge so frequently

Oh wow - these are 1x AAA (also using rechargeable), and I think at least 2 months. I'm also checking them daily, which I assume drains the battery a bit when pulling the data.

OK so much lower usage - thanks for the confirmation - might get a few of those and bin off the current ones because it's a pain having to recharge weekly

[NickXX]

B'stard Child said:

Nothing over 60 in the rooms that I've been monitoring - what l/min are you pushing in with the PIV

I started mine at about 40 l/min based on guidance of 4 bed put it on speed 4 but it's been backed off down to 20 l/min as that gives me 0.25 ACH (or 1 ACH every 4 hrs) and the RH levels stay pretty flat and stable

Mine's set to 31 trickle / 46 heat recovery which is the 3 bed setting on the vent-axia. I might bump it up to 37/49 which is the 4-bed setting. I've got a 3-storey house, so maybe the PIV is struggling to build the pressure up compared to a normal layout.

I don't have any read-outs pre-piv sadly, but did get mould on the ceilings of the top floor bedrooms in the winter (which I'm almost certain is due to thermal bridging of the loft joists due to the mould locations) - so the proof will be if the PIV can prevent this during the upcoming winter.

[NickXX]

Trustmeimadoctor said:

I'd use the ZigBee ones if your goinb to use home assistant at any point
https://sonoff.tech/product/gateway-and-sensors/sn... even if your not you can use their app you need a ZigBee gateway too to use them

It's the ones I use , they use a 2450 battery lasts over a year judging by the usage do far (obviously the more they update the more they use)

Edited by Trustmeimadoctor on Thursday 21st September 09:12

Thanks - these look good. I went for the ThermoPro ones as I was keen not to have them connect to my WiFi (you have to be within Bluetooth range), although this might not be enough functionality for some.

[Trustmeimadoctor]

These don't connect to WiFi they use ZigBee you can get similar WiFi ones and you can make it so they communicate directly with your server rather than theirs if you want to go that way

The nice thing is they use small batteries and they last about a year depending on how often they report

[RobB_]

Does anyone have a boiler in the loft also? I'm thinking CO alarm away from the vent (like the smoke detector) along with the one that's already in the loft

[guywilko]

Piece of kit I've found very useful

Lipstick sized temp and humidity sensor

https://www.amazon.co.uk/Thermometer-Hygrometer-Te...


Seems pretty accurate, uses 2 AAA battery.

Connects to wifi, no hub. Works great with amazon alexa. Can be used to set triggers via alexa or IFTTT.

I have 4 scattered around the house, 1 in the loft.

[Henry Chinaski]

Afternoon everyone, I joined here yesterday after reading lots of interesting posts, and I'm after some advice if that's ok..... I had a Nuaire Drimaster fitted around 2 years ago, and it has been working brilliantly up until last week, the unit is still working but the humidity upstairs is constantly staying above 70,I've tried upping the speed to 4 then 5 for a day or two but to no avail.

I've fitted new filters, but the readings in all three bedrooms are still very high. Has anyone else encountered similar issues lately? I'm wondering if it has anything to do with the unusual weather we're having. We still have a dehumidifier which we've started using again, and it brings it down to 68 or so, but when switched off, the humidity creeps back up again. Any help/advice will be gratefully received.

All the best

[Trustmeimadoctor]

even with my back door wide open its still 65% in there your not going to get it below the outside level without using a dehumidifier

[Henry Chinaski]

So are you saying the indoor humidity is high due to the weather and therefore the warm air that's in the loft?

[B'stard Child]

Henry Chinaski said:

So are you saying the indoor humidity is high due to the weather and therefore the warm air that's in the loft?

I think that's exactly what TMIAD is saying

At 8am my loft temp was 16.2 C and Humidity was 73.9

Right now my loft temp is 27.4 and humidity is 59.2

Both readings are a lot higher than I would normally expect

Rooms downstairs are normally mid to late 50's currently all my humidity loggers are reporting high 60's low 70's