Re: The energy crisis
 

You have missed the point. A dehumidifier recovers heat that would otherwise be lost. But it's hard to measure.

Re: The energy crisis
 

Richard asked how much they cost to run. Please tell me point missed or not would my equation give him a rough idea of running costs or not?

---------- Post added at 21:42 ---------- Previous post was at 21:37 ----------

Octopus have set their electric unit rate at 33.02p which is the lowest rate country wide. The highest 35.98 North Wales and Mersey

Re: The energy crisis
 

Bulb is 35.05 but their standing charge is 38.94 compared to Octopus 44.71, I've not done the maths but I guess Octopus is cheaper over all?

Re: The energy crisis
 

Yeah if you use 10 KWH per day you are at 20p per day so 14p more hahaha

Re: The energy crisis
 

I may have to sell the house so I can afford it! :D

Re: The energy crisis
 

hahahahaha it all adds up its like a pint in a month hahaha

Re: The energy crisis
 

just got a email my DD just doubled from £100 to £213.58 per month not happy

Re: The energy crisis
 

On cost of running dehumidifier - one report I read suggested a couple of hundred a year or more. One figure was closer to £500 than £200, no mention on age of unit or how used.

Re: The energy crisis
 

do the maths on your consumption and the new rates then you will know what the DD should be

Re: The energy crisis
 

I have a small unit that says 9.5L a day removed. Power is 230W so about 1 unit every 4 hours.

Latent heat of vapourisation of water is ~ 2.3KJ / Kg so the amount of recovered heat for 9.5L is about 22KJ in 24 Hours. About 1KWh so the 230W is almost quadrupled for heating the room.

Re: The energy crisis
 

Thanks - that's the figure I wanted. Though in my experience it never removes anywhere near the maximum quoted volume of water.

Re: The energy crisis
 

Bulbs standard rate in my area is 33.017p, which rounds up to the same 33.02p.

However, my rate actually works out cheaper, at 31.90p as I'm on Economy 7 :)

Re: The energy crisis
 

I'm on a prepayment meter and have just been sent my projected cost for the next year.

£100 more!!! Ah well the £600 I'm getting will cover that.

Re: The energy crisis
 

My new rate 35.739 /kwh
standing charge 55.759 /day provider e on next

disappointing when you factor in we are surrounded by wind farms [another con]

Re: The energy crisis
 

Thats like asking do light bulbs cost a lot to run.

As with anything, the answer depends on the wattage of the device.
A 250W dehumidifier will use 1KWH of electricity every 4 hours (about 35p at the new rates).

The "recovered heat" is irrelevant to the actual cost of electricity while its running.

However, it does (should) mean you need to run it less hours overall to maintain a desired room temperature.