Further to my letter of two weeks ago, re power prices; Trustpower have put out a pamphlet showing how to save power 33 ways.
They do not mention three of the most important; probably don't know about them.
1. If your pressure reducing valve is faulty, it can cost you a great deal of money. Make sure it is okay.
2. Check the vent pipe on the roof;(some systems have it out the side of the house).
If there is water coming out, or the roof is wet below the pipe, get it checked.
3. If your kitchen is more than 5m from the hot water cylinder, it may be a better option to install an under sink water heater.
With a long run from the cylinder, after you turn off the tap the water in the pipe goes cold. This also can cost you money.
Teenagers can also cost you money by having 20 minute showers. Up to you to stop them!

Cedric Sutherland, Otumoetai.