This was a small coal burning Inglenook fireplace in a bedroom in a very old home. A 9x15 chimney ballloon was used to air seal the flue just above the firebox. This is a photo from the floor looking up the flue.
A good example of using humor to educate homeowners about saving water, from the Rising Sun Energy Center. RSEC offers No-Cost Energy and Water Assessments to NorCal residents through its California Youth Energy Services summer program.