Does an energy efficient electrical heat and air conditioner qualify for an energy deduction?

If the total amount of my deductions do not exceed $27,000, do I need to just use the standard deduction and not itemize? Do I only need to file the short form?

Regarding the home depreciation as part of the adjusted cost, if I use the simple method and multiply $5 by the square feet of my office, do I add or subtract t...