For instance, avoid storing in an uninsulated closet or pantry with an outside wall or near a furnace.
A small charge Q is communicated to A, and A is insulated, and B, uninsulated, is brought up to it; the charge on B will be - (q/p)Q.
B is now uninsulated and brought to face C, which is uninsulated; the charge on C will be (q/p) 2 Q.
B is then brought to face A and uninsulated, so that the charge on A becomes rQ, where + 7- -) .
Explain the temperature of the house, cold spots, uninsulated zones and the goal temperature you wish it to reach, and ensure they make the correct calculations to accommodate this.