Blush is a very important organ of the house. Regulates the temperature and keeps it warm and alive. Blue when cold, but blushes with red when warm.
The radiator, painted with thermochromatic paint, gradually turns red from top to bottom when it is heating up.
Also, The Devil's Pet:
Sweet little kittens are transformed in a fire. Crawling from the ashes come forth grinning metallic devils with sharp claws and fire blazing in their eyes.
If someone had tried to turn a Guild navigator into a radiator, I don't think they could have done any better than this...
Urban hitchhiking is brilliant.