The very sight of Shri Nathji moving about the house energetically with the air conditioner switched on, fills Priya Nath’s heart with untold happiness.“We ought to have got this installed earlier! How great a torment we have inflicted upon ourselves all these years!”Shri Nathji’s bedroom bore the burnt of the heat of the sun from morning till evening, and the hot winds entered within the window frames. The walls were hot to the touch. Small wonder that Shri Nathji, who had lived most of his life in the hills, had fallen ill from heat exhaustion in the summer of Delhi.