Heat performance tuneup times two systems. Advised Sharece that both filters need to be changed. Inspect blowers, evaporators and ductwork. Test all safety features high limits and roll outs. Check heat exchangers for cracks found none. Check temperature rise on both systems. Both temperature rises were high due to a dirty filter. Check thermostats for proper operations. No carbon monoxide or gas leaks detected in home. Systems operating at manufacture specs at this time.