Category Archives: Electricity

SLC, Auckland.

I’m a single person household. So I found out years ago I could save $20 per month, by only having the hot water cylinder on for 1 hour per day. This is not enough to heat the entire cylinder to the thermostat temperature, but say only half. Of course hot water rises from the bottom […]

Peter Cox, North Shore City.

Oily Rag has some very good tips on saving hot water costs which inspired me to check my hot water cylinder. I found it to be very well insulated but there’s a one meter long copper pipe coming out of it which is always too hot to touch. The heat loss from this pipe must […]

Mackie, Auckland.

Hot water accounts for at least a third of your power bill. I bought a shower timer on Trade Me for $18 and have reduced our power bill by $100 a month. We no longer have an excessive $300+ bill per month!

Eric, Kaiwaka.

Instead of wrapping prehistoric electrical cylinders to save some energy, the whole of NZ should be looking at instantaneous gas heaters for hot water. More than 75% of NZ buildings use electricity for hot water, space heating and cooking… which is very inefficient and makes many households vulnerable because energy prices have risen more than […]

Marty, Christchurch.

I have a large 6ltr teapot sitting on our wood burner during winter. It heats up to boiling in less than an hour and much quicker if I have it sitting directly on firebox. Woodsman Ebony are good. We use hot water for doing dishes and cups of tea and I have used it for […]

Old dame, Mooloolaba Queensland Australia.

I live in public housing and only have a 60 litre HWS but that is a very expensive small heater as it has instant or rapid recovery heating meaning that as water goes out it comes back in and heats. I turn my HWS off all day until 40 minutes before I have my shower […]

Mike, Auckland.

If you have a mains cylinder fit a 350kpa limiting valve instead of the normal 500kpa. You will barely notice the difference but will save lots of water in the shower. A high flow shower head will more than offset the felt loss of pressure and all valves will operate as normal.