For the past two weeks, achieved an efficiency of 434% for our ASHP. Also known as a SCOP of 4.34. 1kWh of electricity generated 4.34kWh’s of heat. We heat hot water overnight on @OctopusEnergy 7p/kWh so the HP is cheaper to run than a gas or our previous oil boiler 👍

@juliandc @OctopusEnergy Not trying to be awkward but, if you have achieved an efficiency of 434%, you’ve discovered a way off breaking the laws of thermodynamics. 🤔

@speakjava @OctopusEnergy Arh no. As Chris says, ASHPs seem to work almost like magic. But you have to consider the whole system, including the earth & atmosphere. They take heat out of the air, & via the expansion/compression cycle transfer it to my my case water to pass around radiators.

@speakjava @juliandc @OctopusEnergy Come on Simon, this isn't breaking the laws of thermodynamics because it's moving energy, not creating it. Please ask your friendly LLM how heat pumps work. A SCOP of over 4 is a good sign of an efficient install and makes the heat pump cheaper to run than a gas boiler.