GFT

Thanks for the input but perhaps I need to be clearer. The proposal is for a new house and to charge a 12+Kw/hr battery (e.g. Tesla Power Wall) from a 2.5Kw solar tracking array. The battery will then run an ASHP and 12V LED lighting. The current coming from the solar array is DC. The battery stores energy as DC and the lighting circuits are DC. Most ASHP's are AC but most have a transformer in them because the pumps themselves are....DC. Essentially, I'm looking for an (circa 21Kw) ASHP which runs off DC to avoid energy losses in conversion.

Hi - I'm looking to install a PV/ASHP system but all systems seem to convert the DC power from the PV to AC and the ASHP then converts the AC power back to DC to run the pump! Does anyone know of a 'joined up' system where the ASHP can run directly off DC from the PV/Battery and avoid all the energy losses in conversion?