I need a small, say 10 litre, electric water heater. But it's a gravity
water supply so only about 0.25 bar. Are there models that don't monitor
the supply pressure? Preferably A rated, unlike the cheap Italian ones
I would have said there are quite a few on the market.
Having it gravity fed means there is no need for a vent or expansion
vessel so virtually any model of undersink water heater will be ok.
I got mine second hand from ebay, but the likely suspects also do them,
Screwfix, TLC etc.
Most come well insulated, obviously the smaller the volume, the less the
surface area to lose heat.
These are device that are generally permanently plugged in, so the
temperature is always maintained.
The volume required is more down to the type of use its put to.
10 litres is a bowl full, and will then take a few minutes to re-heat
the next 10 litres.
We're in the same position and fitted a Elson 10/15L Unvented
Water Heater (Model EUV15). We connected it to the hot water rather than
cold water supply, because our problem was that the long pipe run to the
kitchen caused a long wait for hot water from the main HW tank. It works
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