What are the disadvantages of combustion heat sources?
Heat sources that are above the burning level have many unhealthy side effects such as dry, irritating indoor air. A by-product of this is that they burn a great deal of oxygen in the air. If you remember, when you sit in front of a fireplace or a portable heater or close to heat source, you’ll remember yawning. This is because you’re not getting enough oxygen. This dry irritating heat and lack of oxygen dries out sinuses and mucus in the throat, and makes people susceptible to disease. The lack of oxygen causes fatigue. Also, many combustible heat sources produce carbon monoxide, static cling, and some produce radiation.
