LOCATION OF PRAYER WHEEL IN THE HOUSE

I had a query on where to best place the prayer wheel in the house.  These Buddhist prayer wheels are used to accumulate wisdom and merit (good karma) and to purify negativities (bad karma). Installing a prayer wheel at home has the capacity to completely transform a place, which becomes "...peaceful, pleasant, and conducive to the mind."
I asked Feng Shui master Jason Eng and he said that placing the prayer in the living room would be good and it would be even better placing it on an altar if there is one at home.