While I can appreciate that dual boiler machines have pros, they also have cons. As with hx machines.
However, alot of the pros of dual boiler machines seem to be based on opinion.
Really? Scott Callaghan??? From all talks with him he is a hx man. Anne Cooper??? bit of a generalisation dont you think. Maybe all the best baristas you know?Originally Posted by Wushoes - David S link=1197450139/30#35 date=1197599711
Lets try keep this debate to fact.
Not all hx machines spit steam and water. There are good ones and bad ones, as with dual boiler machines.
Dual boilers only have good temp stabilty with PID, as does my PID hx Reneka.
Dual boilers have no better or worse temp stability and steam recovery than an equivelant priced hx machine. There is no point comparing a marzocco to a san marino, one is twice the price. Lets compare apples with apples.
Here are my facts in favour of hx machines.
Espresso water from dual boilers is in contact with an element, this causing deoxygenation of the water, thus not carrying all the delicate flavours of a good espresso. *
Dual boilers still have tracks(piping) from the boiler to the group head, this means that they may require a flush as the water can cool after leaving the boiler.