This is a performance update video for the Vaillant Arotherm+ heat pump I installed last year in my parent's house, see my previous video for details of the system design and installation:    • Solid Fuel to Vaillant Air Source Hea...  

The heat pump has now been running for 12 months and has averaged a measured SCOP/SPF of 4.4. This has resulted in a £1300 annual saving in running costs competed to their existing storage heaters and significantly increased comfort.

*Vaillant System Settings*
Heat curve: 0.5
Room temp mod: disabled
Daytime set point: 21C
Nighttime setback: 20.5C
DHW set point: 42C
DHW operation mode: time schedule
DHW schedule: mid-afternoon in the summer and midnight in the winter

*Monitoring*
The system s monitored using a OpenEnergyMonitor Level 3 monitoring bundle: https://shop.openenergymonitor.com/le... with live and historic data available publicly on heatpumpmonitor here: https://heatpumpmonitor.org/system/vi...