Dehumidifier

midnight_express

Does anyone have an idea how much it costs (electricity) to run a dehumidifier ?

kittycat204

https://forums.moneysavingexpert.com/discussion/638349

http://uk.answers.yahoo.com/question/index?qid=20081130175813AAvaGfe

http://www.dehumidifiers-online.co.uk/dehumidifier-frequently-asked-questions.html#costs

ariba10

Cheaper than dealing with the consequences of Condensation.

zippychick

as this isn't OS, ive moved it to the gas and electricity board for you

Zip

grahamc2003

midnight_express wrote: »

Does anyone have an idea how much it costs (electricity) to run a dehumidifier ?

Depends on the type of dehumidifier and the settings.

I have a fridge-cycle one (an ebac) and that uses around 250W when the compressor is operating. The fan setting makes little difference.

I also have a dessicant type (an ecoair). That uses about 350W on 'quite', and about 800W on 'turbo' - the difference is mainly the switching in of a 400W heater on turbo - again the fan speed doesn't make much difference. Once the humidity reaches the preset levels, the power drops to very low, just driving the fans to provide air filtration.

So roughly, a typical fridge cycle one will cost about 4p/hr, while a dessicant type will cost typically about 5p/hr on low settings and 10p/hr on high settings.

fishybusiness

Ecoair dessicant type- minimum 400w, works a treat, and very quiet on low setting.

RRobins

Hello everybody!
I bought a Homefront Peltier Compact Dehumidifier, the description sound great! I run it for about 4 hrs and it collected only 2 spoon of water. In specification it says that unit absorbs 600 ml of water a day.
The humidity in the room was 60% and raised to 65% while this unit was working. Window and door was shut.
Is my unit faulty or there was not enough humidity in the air?

rogerblack

RRobins wrote: »

Hello everybody!
I bought a Homefront Peltier Compact Dehumidifier, the description sound great!

Unfortunately, in many cases, dehumidifiers, especially small ones - are essentially useless.
600ml/day is approximately the volume of water in a 4m square room. (At 70% humidity and 20C).

Any air exchange at all means that you're bailing a leaky boat with a seive.

If you look at the spec on the dehumidifier, it will likely say "600ml/day at 30C and 100% RH".

In short - if it's not removing large amounts of water, it's not doing anything.

It may technically be working - in that if you put it in a very hot, humid room, it would remove water at the rate specified, but it's just wasting electricity.
Return it if you can.

RRobins

rogerblack wrote: »

Unfortunately, in many cases, dehumidifiers, especially small ones - are essentially useless.
600ml/day is approximately the volume of water in a 4m square room. (At 70% humidity and 20C).

Any air exchange at all means that you're bailing a leaky boat with a seive.

If you look at the spec on the dehumidifier, it will likely say "600ml/day at 30C and 100% RH".

In short - if it's not removing large amounts of water, it's not doing anything.

It may technically be working - in that if you put it in a very hot, humid room, it would remove water at the rate specified, but it's just wasting electricity.
Return it if you can.

Thank you!
It doe not specify the condition in which the dehumidifier should work.
Also it is broken down today just after 30 min. work.
I bought in through Amazon and already sent request for refund.

Richie-from-the-Boro

RRobins wrote: »

Thank you!
It does not specify the condition in which the dehumidifier should work.
Also it is broken down today just after 30 min. work.
I bought in through Amazon and already sent request for refund.

Amazon .... usually are good at enforcing a replacement, did you buy it from Amazon or from a referral to a company called 'Direct Sales' ?

RRobins you essentially bought a [Compact] small room / cupboard / windowsill unit, the only way it would ever do any good in the way you intended would be to leave it on 24/7, and even then its debatable.

I'd go for a refund and buy one to cope with the square area, if however they replace rather than refund, and you can put up with the noise give it a monitored 36 hour run and see what moisture is left in the air after the 36 hours, you might find it reduces the moisture to a level low enough for the unit to cope with.


Sorry .. ..best of luck RRobins

RRobins

Thank you!
Yes, it is Direct Sales. I would prefer refund because I believe it is misrepresentation to tell in spec that the unit can collect 600 ml of water a day but did not specify the condition for this job.
I was intend to run it for 24 hrs but it did not survive even 4 hrs all together.