House is closed up in winter, freezing here. Well insulated, double-glazed UPVC windows. No draughts. 4…

House is closed up in winter, freezing here. Well insulated, double-glazed UPVC windows. No draughts. 4 people. However I did leave the old gas lighting vents in the top of the walls. And use an air circulator (Vornado) in conjunction with heat pumps for heating. https://t.co/eUkevsxx9z

(Aranet sitting on top of one of our 3 Starkvinds. Love the Starkvinds, thanks to @DrPieterPeach.)

@DrPieterPeach Aranet from @CO2RadicalAus