Compass Coffee wrote:Andy, do you know how much stability just heating the group added? From my Thermofilter tests just boiler PID'd I'd suspect quite a bit, likely overall around 2f inter and intrashot stability just adding group heater. Any idea if there's a 200f tstat that could be used rather than PID? I'm really torn whether to do the mod which I estimeate at another $200 for just the PID group or not because seriously comtemplating upgrading to a dual boiler for steaming convenience.
My recollection is that heating the group improved the brew temp stability by about a degree F.
If you really enjoy playing with this stuff, I would do the mod. If you'd rather sit back and enjoy a cappuccino, I'd do the upgrade.