I have been wanting to supplement my heating system with some plants that produce heat! I have become aware that there are around 14 species which generate significant amounts of heat for example the eastern skunk cabbage.
However I have also read that many species which are thermogenic release odours such as the smell of rotting flesh. I would rather avoid plants which will make my house smell like this!
Are there any plants which produce heat which would be suitable for storing in my house?
The heat the plant produces ultimately comes from the light it uses. Unless the plant produces heat just in the wanted time (winter?) from light absorbed another time; then you would be just as warm by letting the light directly warm your environment regardless of plants.
Philodendron bipinnatifidum is a thermogenic houseplant. It is somewhat toxic, so not pet- or small-child-friendly, but commonly grown as a houseplant. However, I do not know if the heat generated would be enough to significantly impact your house; my impression is that most thermogenic plants merely warm their immediate surroundings (so you may need a LOT of plants). As a side note, your scheme to use plant-based-heating would probably also have good effects on air quality :)