My elder brother has been diagnosed with vascular dementia and has appointed me, his sister, as POA. He is elderly, still lucid and living alone in a two bedroom bungalow with one daily carer coming in for half an hour, and does not live near to me. He will not sanction any repairs to his property, not wanting any upheaval or cost, but his central heating is beyond repair and although he manages with a gas fire which heats water also, I am worried about the oncoming winter. Can I override his wishes and get the heating replaced? Should I do this? He would be angry but it is for his welfare for which I am now responsible.