Bitstreams
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- Buckinghamshire
Brief question, but does anyone know how much a dehumidifier (a domestic one) costs to run. I would like to keep mine going almost constantly at the moment.
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Dehumidifier
- Thread starter Bitstreams
- Start date
Flyfisher
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- Norfolk, UK
Not really sure, but does it have a rating plate somewhere that indicates the wattage? That would give a rough idea.
As an example, if it consumes 100W continuously then that would be 2.4 units per day, so something like 25p per day (I'm not sure about exact unit costs these days) or about £7.50 per month.
Alternatively, something like this would tell you the actual power consumption:
http://www.amazon.co.uk/Plug-In-Power-and-Energy-Monitor/dp/B000Q7PJGW
As an example, if it consumes 100W continuously then that would be 2.4 units per day, so something like 25p per day (I'm not sure about exact unit costs these days) or about £7.50 per month.
Alternatively, something like this would tell you the actual power consumption:
http://www.amazon.co.uk/Plug-In-Power-and-Energy-Monitor/dp/B000Q7PJGW
Bitstreams
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To answer my own question - I got an electricity monitor the other day and I now know that my dehumidifier would cost us about £131 per year if we left it on permanently.
JoceAndChris
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Interesting to see the figure. We leave ours on permanently and I can never decide if it's sucking moisture through the floor ( it's in a sunken kitchen) or just removing ambient moisture.
But if we switch it off, it's much damper - so I guess it's doing its job.
But if we switch it off, it's much damper - so I guess it's doing its job.
Flyfisher
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I suspect it's doing both. By reducing the ambient humidity in the sunken kitchen, it will create a 'moisture gradient' that will result in a migration of moisture from the wetter underground floor and walls to the (now) drier kitchen space.
The cost of running the dehumidifier is the energy cost of maintaining that gradient and, as you rightly say, shows that it's doing its job.
Without it, the kitchen humidity would eventually rise to become equal to that of the surrounding walls so that the moisture levels were in equilibrium (actually, total eqilibrium is a bit theoretical as the normal ventilation through the kitchen would remove some of the moisture, but such equilibrium is the sort of thing that would happen in a poorly ventilated cellar).
The cost of running the dehumidifier is the energy cost of maintaining that gradient and, as you rightly say, shows that it's doing its job.
Without it, the kitchen humidity would eventually rise to become equal to that of the surrounding walls so that the moisture levels were in equilibrium (actually, total eqilibrium is a bit theoretical as the normal ventilation through the kitchen would remove some of the moisture, but such equilibrium is the sort of thing that would happen in a poorly ventilated cellar).