It seems that the cumulative number of EcoCute units shipped has exceeded 5 million!

It seems that the cumulative number of EcoCute units shipped has exceeded 5 million!
https://www.jraia.or.jp/product/heatpump/i_broke.html
Considering that the total number of households is said to be 1 to XNUMX million, this means that one in every ten homes is equipped with an eco-cute.
However, it still consumes four times as much energy as an eco-friendly heater.
At the time of writing, there are still 250 million of these evil "electric water heaters" remaining.
http://www.homes.co.jp/cont/press/opinion/opinion_00102/
Approximately 40 EcoCute units are shipped each year.
Some of these are replacements for old electric water heaters.
I think it's installed.
Any decent country would do whatever it takes.
I would start by replacing this electric water heater.
If we don't do that, the energy conservation policy of this country will be
Cost-effectiveness is of secondary importance.
(It is also one of the rare countries that does not require high insulation of windows.
It's obvious, but...)
By the way, if a house with a gas water heater becomes an EcoCute,
This will reduce primary energy consumption by approximately 5 GJ.
With an electric water heater, the amount of water used will be reduced by about 43GJ.
When you consider that the amount of reduction achieved when installing 15kW of solar power generation is XNUMXGJ, you can see how significant the effect is.
Similarly, it seems that 850 million air conditioners are sold annually. Simply changing from an old model to a new one can result in significant energy savings, but a strong recent trend is that more and more people are switching from kerosene fan heaters to air conditioning for heating.
When looking at heating energy base, kerosene still accounts for over 6% of the total, by far the largest proportion, but the proportion of heating using high-performance air conditioners seems to be gradually increasing.