New Washing Machine 'Cold Fill Only'

ariba10

shandypants5 wrote: »

But....

How do you do a cool wash?

Why would I want a cool wash?

Anyway you find that depending on the length of the "Dead Leg" in the pipework the water is not that warm when it goes into the machine.

shandypants5

ariba10 wrote: »

Why would I want a cool wash?

Anyway you find that depending on the length of the "Dead Leg" in the pipework the water is not that warm when it goes into the machine.

Sorry didnt notice that it was a DISHwasher.:o

Its the "deadleg" pipework that you mention that is the reason for NOT using a hotfill system.

All that usually happens is the machine takes the cooled water from the pipework and then has to heat it up itself anyway.

Then all the hotwater from the tank just sits in the pipework and goes to waste again.

More efficient to just fill from the cold pipe and let the machine heat exactly the right amount of water.

ariba10

shandypants5 wrote: »

Sorry didnt notice that it was a DISHwasher.:o

Its the "deadleg" pipework that you mention that is the reason for NOT using a hotfill system.

All that usually happens is the machine takes the cooled water from the pipework and then has to heat it up itself anyway.

Then all the hotwater from the tank just sits in the pipework and goes to waste again.

More efficient to just fill from the cold pipe and let the machine heat exactly the right amount of water.

The same amount of water the machine will call for, hot or cold.

I think the main reason the manufacturers make cold fill only, is to save on production costs.

andrew-b

But if your hot water supply is greater than 40C it will ruin clothes requiring a lower temperature. 40C is easily achievable in any domestic hot water system ...sure you have to draw off some cooler water from the pipework first but not improbable when the kitchen sink is connected nearby on the same pipe and being used at the same time or once the machine has got going.

Over 40C water won't ruin your dishes....but it might ruin a wooly jumper or other delicate fabrics.

Inactive

ariba10 wrote: »

The same amount of water the machine will call for, hot or cold.

I think the main reason the manufacturers make cold fill only, is to save on production costs.

Got it in one..

Viper_7

If the initial water is hot, stains and the like are actually sealed into the clothes.
Should always be washed in cold water first, so the cleaning is more efficient.

Manufacturer costs is another.
Economy is the next.

shandypants5

ariba10 wrote: »

The same amount of water the machine will call for, hot or cold.

I think the main reason the manufacturers make cold fill only, is to save on production costs.

I think your right about the production costs.

But having your machine connected to your house hot water supply is not as efficient as just feeding from the cold water.

The same amount of water is called for, but you are paying twice to heat it.

Your just paying to warm the pipes in your walls.

moonrakerz

The_Plush_Doormat wrote: »

Dishwashers don't have cool washes. They have a cold rinse, which, in my opinion, is as useful as an ashtray on a motorbike

Ashtrays on a motorbike can be useful at times:-

A hot rinse can harden the food residue and make it more difficult to clean the dishes - hence the cold rinse !.

Chief1975

The reason you can't buy appliances anymore with hot / cold fill is the EU legislation that came into to force where all new kitchen appliances had to have a "energy efficiency rating". The only way manufacturers can calculate the rating consistently is if the appliance heats the water itself.

I dare say that this is probably less efficient in some households as already commented you will still be paying to heat hot water in the tank as well as the extra electricity to heat the water for your dishwasher, go figure ?