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.
Friday, January 15, 2016 at 12:23 p.m. After convicting Daniel Wozniak of a wild, 2010 double murder in late December, an Orange County jury this week recommended the 31-year-old, former community theater actor be sent to San Quentin State Prison's death row for eventual execution, but a mystery lingers.