Lol. Hello Ollytop! Yes, I too was wishing (as I sit here with the snow flying outside) for the warmer weather this chap seems to be enjoying.
Your description of Ollytop on the radiator reminds me of my cat, Cosette (no longer with us), of many years ago. When I first brought her home as a wee kitten she took to hiding in the furnace! Fortunately, it was summer and the gas was off. By the time winter came round she was over her hiding stage and it was no longer an issue, otherwise, I would have had a sizzle burger on my hands. Lol.