NOOOOO
Notice: Any member here caught with the cold water will need to see their Laundering Director, and perhaps visit a confessional. From my understanding, the penances to absolve one of this offence is severe...
Personally, I cannot believe that cold washing is better. Our local testing institution suggests there is only an 8% difference in the results. I can point out some flaws with that:
- Are they testing their laundering over time, or just one wash? Over time dirt can buildup if it isn't properly removed the first time (i.e. pit stains that get worse and worse). Thats why shirts can grey/yellow, over time.
It might work the first few times, but quickly stops doing so, as I found out with "tepid" water for my dark clothes. They started to not smell clean, and there was a noticeable difference just switching up to warm temperatures!
- Testing institutions don't test odour, as its a subjective thing.
- The institutions test premade samples. In reality, stains are probably very different from this "sanitised examples," and not at all easy to remove in tepid water.
My other gripe is this:
Australians mostly heat their water from FREE solar sources. At least 60%, from the Australian Bureau of Statistics. And yet, less than 20% wash in warm/hot water. Given our FREE energy, I think we've been swindled.
You see too many people around in grubby shirts, that are yellowed and stained *badly* from all this. And people think we are saving energy with this?*
Washing in cold prevents the enzymes from working. I don't care whether its formulated for that or not, most enzymes seemingly work best around the "warm" temperature, and bleaching (oxygen-based) takes place anywhere from warm - hot. The colder you wash, the longer you must wash to receive the same results.
Then, as others have said, the cold washing prevents greases from being dissolved into the water. In cold, they can gradually build up and "congeal," making the snot and grime that causes mold and odours in your washer.
It may not be as bad with use of LCB, but exasperated with use of fabric softeners.
*I have been lectured once or twice by people who think that I am destroying the planet with warm and hot washes. They claim their clothes are just as clean...
Well - we previously were "cold-only" with the Simpson TL. Immediately after switching to the Miele, clothes smelt better and were noticeably softer! I'd attribute that to the fabrics loosening up and releasing detergent residues, and odours with it.