My combi boiler was installed last November but the condensate line goes outside into the drain pipe through the wall. It was mild last winter but I would rather have the condy line going into the washing machine waste somehow as there is a heater in the garage below the waste should it get really cold. If you look at the picture the combi condy line is the lagged line to the right. I was wondering what is the easiest way to modify the 40mm waste to accept the 22mm condensate line please? Thanks for any advice, greatly appreciated.