Recent content by ZeFrenchman

It's actually fairly well documented. The part I complain about is the lack of awareness about said studies and documentation. ASHRAE has documented the phenomenon extensively, albeit mostly in institutional settings. Special Pathogen Laboratories and their various commercial counterparts have...

Funny enough, the consensus around the scalding temperature seems to be a correlated with litigation: a very cynical research collaborator once told me: "burn victims cost a fortune, dead people can't sue". A bit harsh, but it does seem to represent the industry's desire for lower water...

To clarify: Legionnaires disease is a reportable disease in most countries with a solid public health system. This means that there generaly are investigations for reported cases, but they are generally centered around reports with more than one case for a general area as it often points to a...

Well, that escalated quickly... ;)

Et salut à toi ;) Yes, geography matters a great deal when it comes to the Legionella conversation, since areas see both various water heating technologies and exposure to the bacteria. But last we checked, not a single water utility (in North America anyway) filtered or otherwise treated water...

And on the topic of tankless WH: they certainly do help the bacteria growth issue, but unless they are gas fired, they should be considered an abomination to our not-so-modern North American power grid: it just can't take the strain of toasting your bread, making your coffee AND charging your...

The prime issue with EWH and Legionnaire's is the configuration of the pressure vessel: with the resistive element a few inches from the bottom, there is a layer of cold water that simply never gets heated. And before someone screams equilibrium, the fact of the matter is that an EWH will...

I absolutely love this thread. It is one of the clearest demonstration of the complexity of "energy efficiency" discussions on one end, and of how something as trivial as heating water is in fact, a pretty deep and somewhat convoluted thing. I am one of the few human beings alive having visited...