Showerheads - Negawatt's Interbath Watersaver

Hot water comprises between 40% and 50% of a household's energy use, and the vast majority of that is used in showering. Most households spend $300 to $400 a year on hot water for showers.

Did you realise that you can potentially halve your hot water shower use while enjoying a high quality shower experience? See p.7 of the BRANZ Report on Home Energy Use.

The experience of showering is not so much a function of how much hot water is used or even the water pressure, but rather the quality of the shower rose. A high quality shower rose can use minimal water while providing a really good shower.

In May 1994 Consumer Magazine tested a range of showerheads and recommended Negawatt's Interbath Watersaver. EECA estimates savings of around $480 over its lifetime, but this would vary depending on the amount of water used, the energy price and the cost of the water. See the EECA Report.

How much water does your shower use?

There's a simple test. Run the shower at normal showering temperature for precisely one minute, collecting the water in a bucket. Now decant the water into 2 litre milk bottles.
7 litres - Efficient (Negawatt's Interbath showerhead)
10 litres - Moderately wasteful
15 litres - Grossly wasteful (not uncommon)

What can you do about a wasteful shower?

Fitting a Negawatt Interbath showerhead can save you $100 to $200 per annum for a cost of only $36. You will have a high quality shower no matter what the water pressure. The absolute maximum water usage will be 9 litres per minute (in a very high pressure system). Fitting the showerhead is a simple DIY job.

What do you get with your showerhead?

Your showerhead comes in three sections: the showerhead (pictured above), the arm (120mm) that comes out from the wall and the flange that sits around the arm as it exits the wall.

Showerhead Dimensions

Order here