Spec me a dehumidifier please?

Kill_Phil said:
Blimey was about to pull the trigger on one of the ebacs. Any chance of a vid?
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youtu.be

Ebac 2250e high pitched noise

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Ok so please bear in mind that the sound recorded from my phone cannot convey the actual volume in the house. Its really quite a penetrating sound when I am in the same room as the unit, but if Im in another room it can't be heard - so its not loud in terms of decibels but it is an intrusive sound.

Please listen carefully for three types of sounds here:

1. The first is a deeper sound of the fan and airflow - like a normal desk fan sort of whooshing sound. This is fine, its low pitched and not intrusive.
2. The second is a high pitched sound of the compressor. It is an intrusive fairly high pitched continuous sound.
3. The third is an overtone which sounds like a pulsing almost. Like a sine wave overtone that is on top of the compressor sound.


Like I said, its not that the sound is particularly loud in absolute terms, but its certainly intrusive because of the pitch of it and the overtone that is a continual unchanging sine wave type of noise.
 
I don't understand my living room, it's behaving beyond the laws of physics.

Humidity on returning from work today was 66% at 16.8 degrees.

I put on the heating and the room warms up to 20 degrees, but the humidity is still at 66%.

According to an online calc the humidity should have fallen by around 10% for that temperature change.
 
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Few things to check are is the humidistat actually working? How did you heat the room? Combustion by products put water in the air so flueless gas fires etc will increase temp and water in the air, same goes for running gas hobs. There is also an equilibrium that you are fighting against, the objects/walls in your room "settle" to a certain RH, lowering the RH in the air will inevitably get them to release their stored moisture until they equilibrate with the air again, its aptly named "equilibrium relative humidity" in reference to RH and "equilibrium moisture content" in reference to the objects. All objects are different in this regard, wood for instance can store/emit quite a lot where as synthetics like plastics less so. The way you lower the RH in the room over time by only heating is to do as you did and then ensure you keep putting in cooler air from outside, this in turn removes some of the hotter moisture laden air, and allows the cooler air to heat up and absorb more moisture emitted by the objects until the lower equilibrium is reached. Essentially what a PIV does. Of course people also increase water input into air as does certain activities like cooking, washing etc. If the measuring is accurate then its still suprising given any of the above that you would not see at least some change
 
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Gammawolf said:
Few things to check are is the humidistat actually working? How did you heat the room? Combustion by products put water in the air so flueless gas fires etc will increase temp and water in the air, same goes for running gas hobs. There is also an equilibrium that you are fighting against, the objects/walls in your room "settle" to a certain RH, lowering the RH in the air will inevitably get them to release their stored moisture until they equilibrate with the air again, its aptly named "equilibrium relative humidity" in reference to RH and "equilibrium moisture content" in reference to the objects. All objects are different in this regard, wood for instance can store/emit quite a lot where as synthetics like plastics less so. The way you lower the RH in the room over time by only heating is to do as you did and then ensure you keep putting in cooler air from outside, this in turn removes some of the hotter moisture laden air, and allows the cooler air to heat up and absorb more moisture emitted by the objects until the lower equilibrium is reached. Essentially what a PIV does. Of course people also increase water input into air as does certain activities like cooking, washing etc. If the measuring is accurate then its still suprising given any of the above that you would not see at least some change
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The humidistat appears to be working - it was only a cheap one off the rainforest but the readout does change on it.

The heating was via central heating.

It makes sense that the objects within the room are releasing their water content and equalising with the room though. The dehumidifier so far (2 days use) has pulled out around 5 litres of water that's been tipped down the sink. So I guess we're slowly pulling that water content from the various objects within the rooms.

But still, like you say, a quick blast of heating should see the RH value fall as the air heats up and the objects would be lagged in that regard, so I would have thought it would fall in the short term when we put the heating on.
 
robj20 said:
Dyson fan, and sensor are within 1 or 2 of each other. So guessing reasonably accurate.
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70% is quite high. Do you have a decent extractor in your bathroom? Do you have a decent extractor above your hob? Those are the main sources of humidity, beyond just breathing.

If you have hot showers and the leave the bathroom door open, you'll introduce far more moisture than a dehumidifier can remove.

Also, don't open the windows if it's soaking wet outside! It's been incredibly humid the last few weeks, you won't gain anything by opening windows.
 
Is that drying clothes .. what is the humidity level . is it healthy.

R4 Wed, had an interesting article of landlords tenants who were complaining about damp properties & mold, because they didn't have the sense to ventilate when cooking/showering , & to open windows when appropriate;
they interviewed a university prof on building ventilation.
 
mid_gen said:
70% is quite high. Do you have a decent extractor in your bathroom? Do you have a decent extractor above your hob? Those are the main sources of humidity, beyond just breathing.

If you have hot showers and the leave the bathroom door open, you'll introduce far more moisture than a dehumidifier can remove.

Also, don't open the windows if it's soaking wet outside! It's been incredibly humid the last few weeks, you won't gain anything by opening windows.
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The thing is you say 70% is high but that's at 18c right this second it's 71% @ 18c.
Offset that to 20c and it's only 62%

And yes 4" inline bathroom extractor in the loft.
No extractor in the kitchen.

Outside is 69% @ 13c, so at 20c that's 44% so definitely worth having the window open at the minute.
 
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That does seem high. Our house is around 40-50% constantly no matter the temperature or time of year. It’s an old Victorian terrace so somewhat draughty which may help?
 
I contacted Ebac customer service with the video recording above. On my first contact I described the noise without the video, and the response was that "doesn't sound normal, it should just be a low hum, you can return the item". When I sent the video, the response was "that's normal it will sound like a fridge".

So which is it Ebac? A fridge does not sound like a low hum.
 
danlightbulb said:
Now there is a new noise. Take a listen to this:

youtu.be

more dehumidifier pinging noises

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youtu.be youtu.be

It is like someone tapping on metal pipes with a spanner.
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That sounds like something is tapping the cooling coils - my guess would be a something on the fan.

In your previous video, I could hear the compressor and also what sounds like a dry bearing too. I'm wondering if perhaps the bearing has given way and tapping on the cooling coils?

I used to have an Ebac dehumidifier, but I wasn't thrilled about it's quality considering the price I'd paid for it. When I eventually retired it a few years later, I disassembled it and noticed bent cooling fins - definitely not caused by me. But it's these things that leave you wondering what else is up with it.

Now I simply don't use a dehumidifier. Open the windows when cooking or using the bathroom and keep them on the vent as the weather allows. Sometimes I might open them for an hour or two to thoroughly air the house, but this isn't always feasible in winter.
 
darael said:
sounds like a dry bearing too. I'm wondering if perhaps the bearing has given way and tapping on the cooling coils
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The unit is only 5 days old. This new pinking sound started when I moved the unit upstairs yesterday. It doesn't always happen though.

Will take it back tomorrow, had enough of it. Bought Ebac because of the supposed quality and UK optimisation but clearly not the case.
 
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Returned the Ebac 2250e.

Now need a replacement

Would have liked to try the Meaco Arete 20L but its out of stock everywhere. Can possibly get the 12L size but that may be too small.

Considering the Ebac 4650e which is available from Argos and I believe is the newer model Ebac range and has app connectivity.
 
Bought a Meaco 12L, quite heavy for its size, I guess it's the compressor.

I like the target humidity setting, laundry setting too (i don't have a tumble dryer). It will be useful this winter.

osvn07A.jpg


(Bought one because upstairs humidity has hit 70% where i keep my guitars...and that is bad for guitars!
 
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Raymond Lin said:
Bought a Meaco 12L, quite heavy for its size, I guess it's the compressor.

I like the target humidity setting, laundry setting too (i don't have a tumble dryer). It will be useful this winter.



(Bought one because upstairs humidity has hit 70% where i keep my guitars...and that is bad for guitars!
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We have the same one, gets heavy use drying the washing, been great so far :)
 
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