Summer is here and with summer comes hot days. You probably know that us humans get uncomfortable if the temperature rises too much. Sure, we could turn on the loud and inefficient window AC unit and try to stay mildly comfortable while the electric company pick-pockets pennies from our change purse, but what is the fun in that? [Fran] had a better idea.
He noticed that his basement was always in the upper 50°F range regardless of how hot it was outside. He wanted the cool basement air to reside upstairs in the living area. After thinking long and hard about it he decided that a box fan and two long, skinny cardboard boxes assembled together would be enough to move the required amount of air. Both the fan and boxes were kicking around the house so was no cost and no risk to try this out.
The now one-unit assembly sits on the stairs and blows the cool air from the floor of the basement up the stairwell and into the house. For this to work the door leading to the basement must be open. At this point the system worked somewhat well but [Fran] wanted more airflow. Air was being blown into the house from the basement but the air already in the house didn’t have anywhere to go. [Fran] decided to open the attic hatch to let the air escape which resulted in a big improvement in airflow and decrease in living area temperature.
As funny or low-cost as this may look, [Fran] reports some impressive numbers, a reduction of 11 Kwh/day, which is 50% of his electrical usage during the summer months. He claims to have not used his wall-mounted AC in several years because this cooling system works so well.