Solar vacuum tubes from Worcester, Solar - Lux 6/12 supplying a 250
litre domestic hot water tank which is topped up by a gas condensing system boiler, which only provides hot water
Heating system: 4kW Daikin Altherma split air - to -
water heat pump — 503 % efficiency space heating and 213 % efficiency for
domestic hot water — supplying underfloor heating and 180
litre h / w tank, & radiators (not used).