Mould in bedroom

[Harry Bloomfield]

Absolutely true, a modern tumble dryer would cost much less to run. Mostly as it would take a lot less time. We have one, the smart meter barely notices it running.

Sorry, I cannot believe that can be true, compared to my system. Yes, I do agree that a condensing drier is much more efficient, that an older type of drier, but compared to how I do things, sorry, no. My system allows several machine loads to be hung, and dried overnight, with no expensive heat input needed, other than background heat from the CH radiator. It costs just a few pence, per drying session.

I suspect you're used to the running costs of the old-fashioned heat tumble dryers, which basically boil the water out of the clothes. They were a very expensive way to ruin your clothes.

If I were comparing it to a heat only, opened vented drier, I would agree, but we have a condensing drier, which is what we now don't use - because my alternative system is so much cheaper.

 

[carlbidwell12]

Mould in the bedroom isn’t just about appearance, it’s often a sign of too much moisture or poor airflow. Boosting ventilation (open windows or install vents) and keeping surfaces dry are key. For more information visit: https://www.diynot.com/diy/threads/controlling-damp-and-mould-to-vent-or-not-to-vent.545160

 

[Ivor Windybottom]

Sorry, I cannot believe that can be true, compared to my system. Yes, I do agree that a condensing drier is much more efficient, that an older type of drier, but compared to how I do things, sorry, no. My system allows several machine loads to be hung, and dried overnight, with no expensive heat input needed, other than background heat from the CH radiator. It costs just a few pence, per drying session.



If I were comparing it to a heat only, opened vented drier, I would agree, but we have a condensing drier, which is what we now don't use - because my alternative system is so much cheaper.

A heat pump dryer is absolutely nothing like a condensing dryer! Running costs are a tiny fraction of what you'll pay for your old steam-powered monster.

What you've made in your room is a very large, horribly inefficient version of a heat pump dryer. In your case the heat pump is inside your dehumidifier, doing the same as the one in a dryer does but with massive heat losses from the room.

Hopefully this will explain how they work for you...

Drying in a room with a dehumidifier is OK if you have no alternative, i.e. if you can't afford a heat pump dryer or don't have space for one. But if you can get one then it's a very good idea.

We used to have a condenser dryer, but got fed up of shrunken clothes and high bills so stopped using it. But now we tumble dry pretty much everything, even in the middle of summer. The running cost just isn't worth worrying about.

 

[noseall]

You need to approach the problem scientifically with an open mind, it's not always just trapped air and poor insulation.

What makes you think I don't?

The meters are a waste of money - end of. There will be moisture in the air of an occupied building. It will seek to condense on the coldest, daft free surfaces of the home. We can build houses, extensions etc in such a way to reduce the risk. We can carry out remedial work to existing buildings to do the same. I don't need a humidity meter to tell be where those vulnerabilities are, thanks.

Bin the meters. Insulate the surfaces. Ventilate where you can. What ever you do, don't listen to people that simply say 'turn the heating up and open the windows, lol.

 

[Harry Bloomfield]

A heat pump dryer is absolutely nothing like a condensing dryer! Running costs are a tiny fraction of what you'll pay for your old steam-powered monster.

What you've made in your room is a very large, horribly inefficient version of a heat pump dryer. In your case the heat pump is inside your dehumidifier, doing the same as the one in a dryer does but with massive heat losses from the room.

We will just have to agree to differ!

 

[Ivor Windybottom]

We will just have to agree to differ!

Nah, you're just plain old wrong.

Most people don't understand how a heat pump dryer works, perhaps because they look identical people think they're only an incremental improvement. But they're utterly different.

 

[Ivor Windybottom]

daft free surfaces of the home.

We don't have any. Daftness radiates out from us and permeates the fabric of the building.

I get your point, but meters can be helpful - at least in ruling out issues. If you aim to keep below 60% in a heated home but don't worry about occasional spikes then you'll be fine.

 

[Harry Bloomfield]

Nah, you're just plain old wrong.

That is your opinion!

Most people don't understand how a heat pump dryer works, perhaps because they look identical people think they're only an incremental improvement. But they're utterly different.

They are quite simple, why would I not understand how they work?

 

[Harry Bloomfield]

I get your point, but meters can be helpful - at least in ruling out issues. If you aim to keep below 60% in a heated home but don't worry about occasional spikes then you'll be fine.

Your humidity meters tell only a partial story, they don't tell the entire story. Even with low humidity registered on your meters, cold surfaces can promote condensation, and mould - rather like your heat-pump drier

 

[Ivor Windybottom]

That is your opinion!


They are quite simple, why would I not understand how they work?

Because you disagree with me saying you've just made a really inefficient one. You've home-brewed a system using all of its internal components, scattered across the inside of a room. Fan, dehumidifier, a bit of heat. That's basically it, but with loads of added inefficiency.

Watch that Bosch video I posted. It contains everything in your drying room.

 

[Harry Bloomfield]

You've home-brewed a system using all of its internal components, scattered across the inside of a room. Fan, dehumidifier, a bit of heat.

I only added a fan, and a dehumidifier - they have to be be stored there anyway, the heat source has always been there.

That's basically it, but with loads of added inefficiency.

Nope, I actually measured it's efficiency, and posted the results on here, you try doing the same.

 

[Harry Bloomfield]

Watch that Bosch video I posted. It contains everything in your drying room.

You've twigged, at long last! The big difference, which you seem to be missing, is how my system needs much less heat/temperature input, and it has much, much higher single load capacity, several times that of your drier.

 

[Ivor Windybottom]

You should go on Dragon's Den and get some funding. Put the contents of your room into a box and sell it, if you've made something better than every appliance manufacturer then you'll make a fortune.

 

[Harry Bloomfield]

You should go on Dragon's Den and get some funding. Put the contents of your room into a box and sell it, if you've made something better than every appliance manufacturer then you'll make a fortune.

Few people will have the space, to accommodate a large room sized drier, so what's the point?

 

[noseall]

I get your point, but meters can be helpful - at least in ruling out issues.

How? They'll show a reading, i.e. high, low or otherwise. They will not tell you whether the house has many occupants, a busy kitchen and zero trickle vents or extractors - or whether the house has exterior water penetration, loads of cold bridging and poor construction issues.

One thing is for certain, well insulated modern construction houses suffer the least issues.