When you’re aiming to introduce a little warmth to the home, you need to think about not just the decor and soft furnishings that can give it that cozy feeling, but you want to consider how you heat the home as well.
Given that a good clean airflow throughout the furnace is essential for its long life, then you can imagine that having dust and dirt all around the furnace isn’t going to be good for its operation.
For instance, a burning smell from heater appliances can mean many things, but it might for instance mean that there has been damage to a component inside the furnace if it has a plastic smell.
If you’re using a propane or gas furnace, then there is going to be some water given off as a result, that will run out of the drainage tube into a drip pan that you need to empty and clean now and then.