How do i work out running cost of an appliance

chrisb1357

Hi all,

Can anyone help me how to work the basic running cost of an appliance i am looking to purchase. How do i work this out as i have tried online calculators with not much luck.

Model

DD122FW Simple

Power supply

Ph-V-Hz
1-220~240V-50HZ

Power consumption

W
390 - 640

Moisture removal
20°C,RH60%

L/Day
7

Noise level

dB(A)
34

Ambient temp

°C
1 - 35

Water tank volume

L
2

Net Dimension (H*W*D)

cm
48.5 x 29 x 17.5

Gross Dimension (H*W*D)

cm

55 x 35 x 22.9

Net/Gross weight

kg
6 / 7

KathysBoy

chrisb1357 wrote: »

Hi all,

Can anyone help me how to work the basic running cost of an appliance i am looking to purchase. How do i work this out as i have tried online calculators with not much luck.

Model

DD122FW Simple

Power consumption

W
390 - 640

This is the key data. It has a turbo mode, so this is the mode that draws the most moisture out of the air (You usually use it when you have laundry in room), consequently uses the most power (640 watts). The quiet mode probably uses the least power (390 watts). This is per hour, and assuming your electric costs around 15p a kilowatt hour (1,000 watts), in quiet mode it will cost 15p for about 2.5 hours, and in turbo mode for about 1.5 hours

Cardew

The simple answer is you cannot work it out.

When the dehumidifier is running(i.e. extracting moisture) then it uses between 390w and 640w which with electricity costing 12p/kWh will cost between 4.7p and 7.7p an hour.

However when it reaches the required level of humidity it will not run. So after the initial installation it might only run, say, 30% of the time.

It is worth noting that the appliance will also produce useful heat.

chrisb1357

So does it look like its expensive to run as i dont want to just buy it and leave on and find a massive electric bill

grahamc2003

Cost per hour (in pence) = Power (in Watts) x Cost per unit (in pence) / 1000.

So, your dessicant dehumidifier set on low, using 390 Watts assuming 12p/unit electricity price will cost 390*12/1000p/h = 4.7p/h (pence per hour).

On high (640W), it will cost 7.7p/h (at 12p/unit, a unit is a kWh, a kilowatthour, or one kilowatt for one hour).

If you use it at night on economy 7 at say 6p/kWh, the cost will be 2.4 and 3.9p/h respectively.

The only thing to watch out for is that some appliances don't operate all the time when 'On'. For example, your has a humidistat which will turn the heating elements off when the set humidity is reached, so the consumption drops to very low at that point.

chrisb1357

Just checked our electric rates and they are as follows.

Tier 1 = 23.142
Tier 2 = 11.085

chrisb1357

Would you say it might be a good idea to install my electric monitor i have on the appliance when i get it to monitor its usage.

Cardew

chrisb1357 wrote: »

Would you say it might be a good idea to install my electric monitor i have on the appliance when i get it to monitor its usage.

It will do no harm!

However you need to wait for some weeks before you start calculating costs. Initially they extract loads of moisture because the fabric of a room(walls, floors, furniture) absorbs moisture and is often damper that most people appreciate.

chrisb1357

That was just my main concern was to have it on 24/7 for the first week but i want to keep an eye on electric costs while its on 24/7

Chris

Cardew wrote: »

It will do no harm!

However you need to wait for some weeks before you start calculating costs. Initially they extract loads of moisture because the fabric of a room(walls, floors, furniture) absorbs moisture and is often damper that most people appreciate.

macman

Well, you already know that even if running flat out 24/7 it can cost you no more than 24x your Tier 2 rate of 11.08p-so about £2.65 per day, in reality it will be less.