I have been using the ECM Max for a few weeks now and love it. I’ve also been monitoring its power.
Heating up from cold takes around 25 minutes and costs around 9p each time. Ive had 3 coffee’s today, 1 around 7:40am, another around 12:00 and the last one around 2:45pm. By turning the machine on and off each time it would have worked out around 27p by the end of the day. Instead, leaving it on from 7:15am till 3:00pm worked out at 13p total as can be seen from the graph below:
![](https://i.imgur.com/IuiPztm.png)
The graph above also shows the power in Watts throughout the 8 hours it was left on today. It can clearly be seen during each brew how the power increased to around 1400W, but in-between brews it was cycling around 250W to keep the temperature stable.
Below shows a zoomed in reeding of the power in Watts from 9:00am to 10:00 today while the machine was idle.
![](https://i.imgur.com/OhwQUFd.png)
Regarding the temperature stability, the group head stayed constant all day despite being covered to hold the heat in. The brew temp is set for 90°C and although the machine is showing 91°C on the PID the group is showing almost 90°C. This picture was taken today around 12:00 after I uncovered the group, the machine had been left on for around 4 hours with no cooling flushes.
![](https://i.imgur.com/IkkTmre.jpg)
![](https://i.imgur.com/UoT1gva.jpg)
I have been very surprised how stable and how cheep its been to run this machine, leaving it on all day was something I never wanted to do assuming the energy price but it just goes to show.