I doubt they are both on the same circuit as each have quite a heavy draw.

Normally the blower is protected by a 30A fuse, but not knowing Escorts I coulden't say for sure.

It may just be coincidence both have gone at same time.

For the fans I would be checking the relay and power to it.

For the interior fan check you have power at one side of the fuse with ignition ON.

If you car is equipped with a 'Resistor Pack' for blower control these are well known for going and needing replaceing, does it work on any speed at all?

Martin