You can block it. The unit won't heat or cool that room anymore though. The return air does effect supply air temp. And heat pump efficiency. With a 60 degree return air temp, the heat pump is more efficient then with a 70 degree return air temp.
We are simply getting contaminated causing otherwise healthy folks to lose the function of their kidneys and for a senior citizen who is already suffering sarcopenia this can be a death sentence because of the complexities associated with Renal Failure.
Virginia's Death Row is the home of the commonwealth's worst criminals who await their fate either by electrocution or by lethal injection. Death Row is located at Sussex I State Prison in Waverly, Va., and is currently home to 15 male prisoners. The lone female who is on Virginia's Death Row is housed at Fluvanna Correctional Center for Women. The oldest person on Virginia's Death Row is 59; the youngest is 26. The average age is 36. They have been on Death Row for an average of five years. The average time spent on Death Row since 1991 has been 7.1 years.