cost of using a dehumidifier

lovelyjubbly

Just one more calculation please?
how much would it cost to run a dehumidifier?
the rate is 230w
my night rate is 5.89inc vat which I get for 7 hours
my day rate is 22.51 for the remaining 17 hours
what would the cost be for 24 hours?

the reason I ask is that I read somewhere (it may have been on here) that it would be cheaper to use a dehumidifier to keep a little used room aired, than to turn a heater on for say an hour a day, so I am trying to compare the price, if I did use it, I would probably only use it on the night rate, but would be interested to find out how much it would cost for 24 hours.

brysiewysie

Number of watts / 1000 x unit price x hours

Day = 38p (17 hrs)
Night = 4p (7 hrs)

Cardew

brysiewysie wrote: »

Number of watts / 1000 x unit price x hours

Day = 38p (17 hrs)
Night = 4p (7 hrs)

?????

17hours x 230w = 3.91 kWh x 22.51p = 88p

7hours x 230w = 1.61 kWh x 5.89p = 9.5p

So about £1 a day.

That is assuming that

1. It is 230 watts and not 230 volts!

2. That it doesn't have a thermostat - I have one that cuts in and out as the required humidity is reached.

3. That you will be paying at tier 1 prices for the whole 17 hours every quarter.

lovelyjubbly

Thanks brysiewysie and Cardew for your prompt replies
the dehumidifier is definately 230w
the leaflet actually says:
power comsumption 230w (at 30C - 70C)
I dont think it has a thermostat, but has two speed settings
I think it might be usefull to just use it at night on the cheap rate as around 10p a night sounds very reasonable

brysiewysie

Cardew wrote: »

?????

17hours x 230w = 3.91 kWh x 22.51p = 88p

7hours x 230w = 1.61 kWh x 5.89p = 9.5p

So about £1 a day.

That is assuming that

1. It is 230 watts and not 230 volts!

2. That it doesn't have a thermostat - I have one that cuts in and out as the required humidity is reached.

3. That you will be paying at tier 1 prices for the whole 17 hours every quarter.

Formula was right, damned calculator must be faulty!