[Greenbuilding] Low powered (wattage) water heaters availablethrough Hydro Quebec

jfstraube1 at bell.blackberry.net jfstraube1 at bell.blackberry.net
Thu Dec 29 16:18:22 PST 2011


The reason for the 140F recommendation is based on some pretty solid research about Legionaires disease. For fossil fueled heaters, 120F is enough it seems because during firing local high temperatures and mixing occurs. 
I will try to send paper reference on this. 

Sent wirelessly from my BlackBerry device on the Bell network.
Envoyé sans fil par mon terminal mobile BlackBerry sur le réseau de Bell.

-----Original Message-----
From: Reuben Deumling <9watts at gmail.com>
Sender: "greenbuilding-bounces at lists.bioenergylists.org"
	<greenbuilding-bounces at lists.bioenergylists.org>
Date: Thu, 29 Dec 2011 23:59:41 
To: Green Building<greenbuilding at lists.bioenergylists.org>
Reply-To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Low powered (wattage) water heaters
 availablethrough Hydro Quebec

here are a few more nuggets from Hydro Quebec:

In addition to contributing to reduced power demand by using a three-element water heater, you can also adopt more energy efficient water heating practices that will lower your electricity bill.

Here are a few examples:

  *   Keep your water heater’s temperature at 60°C (140°F).
  *   Insulate hot-water pipes.
  *   Take shorter showers and use a reduced-flow showerhead.
  *   Use your clothes washer efficiently; for example, by doing your laundry in cold water.
  *   Use your dishwasher efficiently—by running it only when it is full, for instance.

My adaptation with a bit more attention to ranking by importance and creativity:

  *   Do your laundry in cold water. Consider doing less laundry especially if you now do more than one load per week.
  *   Take shorter showers and use a reduced-flow showerhead and a soap valve/shower button.
  *   Wash your dishes by hand. That way you can choose how little (hot) water to use.
  *   Keep your water heater’s temperature at 49°C (120°F).
  *   Insulate hot-water pipes.

Most of their recommendations (above) are decades old, and it would be worth investigating whether repeating them endlessly is having any effect today? Why not up the ante a bit, vary the phrasing, challenge the audience to think a bit more creatively about this problem. What could they possibly lose?

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