12 kW Heat Pump Using Too Much Power? How We Cut Consumption by 50%

Join our new interactive heat pump educational platform — mobile-friendly, practical, and designed for modern learning. Use code JOURNEY20 for a 20% discount until 31.8.2025.: https://hvaceduhub.com/heatpumpintrod... -12 kW heat pump -radiators -fixed flow temp. 50 ˚C -buffer 200 L All of the above means that consumption must be higher, but I was monitoring on Cloud and testing something with a lower flow temperature but still it was too high and my idea was that something was wrong on the refrigerant side so we checked and charged again, even changing the liquid pipe. Then, on-site, we tried to do the fast calculation and realized: 2 x secondary pump, fixed speed, set up on maximum speed (3) + 2 x ON/OFF thermostat - not so much radiators in the house, so way to high speed secondary flow rate is fixed at around 3.8 m3/h (64 L/min) primary flow rate on 12 kW is 1.9 m3/h (32 L/min) And just by lowering speed from 3 to 1 (around 32 L/min), heat pump power consumption is 50% lower. Take a look what to do if your cost is too high. 🔗 Download your free Heat Pump Guide here: https://www.hvaceduhub.com/heat-pump-... 🔗 LinkedIn profile:   / mario-dodic   🔗 Web: https://hvaceduhub.com 🔗 Instagram:   / hvaceduhub   Check other videos on the channel: 1. Heat Loss Calculation - ultimate guide Part1 -    • Heat Loss Calculation | Your ultimate guide   2. Room Heat Loss - step by step Part2 -    • Heat Loss Calculation | Your ultimate guide   3. Heat Pump Capacity and Flow Rate - Quick Formula -    • How to Calculate Heat Pump Capacity & Flow...   4. The Main Problem with Oversized Heat Pump -    • How to Calculate Heat Pump Capacity & Flow...   5. Heat Pump COP explained -    • Heat Pump COP Explained | What Is Coeffici...   6. Domestic Hot Water (DHW) Tank Calculation -    • DHW Tank Sizing Explained | How to Calcula...   7. How To Become Perfect HVAC Professional? -    • How to Become a Top HVAC Professional | Ti...   8. What Is The Secret Behind 75 °C Water Temperature With R290 Refrigerant? -    • The Secret to 75°C Hot Water with R290 Ref...   9. Heat Pump Case Study No1 - 12 kW / 300 m2 - Part 1 -    • 300m² Underfloor Heating System Explained ...   10. Buffer On Heat Pump System - YES OR NO? -    • Buffer Tank in Heat Pump Systems | Do You ...   11. Heat Pump Case Study No1 - 12 kW / 300 m2 - Part 2 -    • 300 m² Underfloor Heating Case Study | 12 ...   12. Heat Pump Delta T - Why Is It Important? -    • Why Delta T of 5 Matters in Heat Pump Syst...   13. Pipes In Heating System - Velocity and Diameter -    • Pipe Velocity & Sizing in Heating Systems ...   14. Is Heat Pump Expensive To Run? -    • 12 kW Heat Pump Using Too Much Power? How ...   15. Heat Pump - The Simpler The Better -    • Underfloor Heating Without a Buffer? Circu...   16. Heat Loss and Compensation Curve on Heating System -    • Heat Pump Weather Compensation Explained |...   17. 90% of Heat Pump Installations Don't Need a Buffer -    • Do You Really Need a Buffer? Heat Pump Flo...