HOW TO LOOK AFTER YOUR GRAND AND UPRIGHT PIANO FROM THE NATURALLY OCCURRING ENVIRONMENT, AND KEEPING UP REGULAR  MAINTENANCE & SERVICING  OF YOUR SPECIAL INSTRUMENT.
1  : Keeping your piano regularly tuned, preferably every six months- to one year.
2 : Service & regulated, one's every Ten to thirteen years. ( THIS IS VERY IMPORTANT )
For long jeopardy of wear and tear, and premature wearing out the piano action.  
3 : Keep your piano from direct warm & cold drafs from open door's.
4: Keep off the direct Sunlight from shinning on any part of the piano cabinet. 
5 : Keep your piano preferably on the interior wall,or if must!! on exterior wall allow 17 cm clearance. And  put a 7 cm polystyrene sheet directly on the back surface of your piano. 
6: Keep liquid away from any part of the cabinet, aspecially the top of the cabinet lid and the key fall. No flower pots, vases, cups or glasses of liquid.