HeatpumpMonitor.org Results

• Introduction
  • Headline stats
• Low temp = High Performance
  • Weighted by heat output average flow minus outside temperature
  • Weighted by heat output average flow temperature
  • Good performance = lower average design flow temperatures .. than we think!?
  • Calculated design flow temperature vs measured flow temperature on coldest day
• % of ideal Carnot COP
  • Causes for % carnot range?
• Measured heat loss
  • Calculated heat loss vs measured heat demand
  • HeatpumpMonitor.org heat demand tool
  • Accurate vs default CIBSE heat loss calculations
  • Accurate heat loss risks
• Max output testing
  • Vaillant Arotherm+
  • 5kW R410a Mitsubishi Ecodan (2015 model)
  • 11kW Daikin Altherma
• Over-sizing
  • Over-sizing factor vs performance: Vaillant Arotherm+
  • Over-sizing factor vs performance: Daikin Altherma
• Electrification of Heat
  • High level error detection
  • Sub-optimal weather compensation issue
  • Sub-optimal weather compensation prevalence
• Recommendations
• Case Studies
  • 1980s Bungalow, 5kW Vaillant Arotherm+
  • Solid stone end-terrace, 5 kW Gen 6 Samsung