I have a 1 yr old through the wall unit, around 18000 btu with a 220v
plug.

I have two questions about the energy saver featu

1) Does the energy saver mode make a measurable difference in energy
use? Mine goes on and off in what I think is short cycles, I assume
because the room temp increases rapidly. I keep the temp set at
around 74 deg. The room stays comfortable enough.

2) Is all of that turning on and off bad for the unit? Should I just
keep it on regular mode running all the time, instead? I know that
the cooling part cycles on and off to keep the temp constant so I
assume the energy saver feature just controls the fan?

TIA.

Sue(tm)
Lead me not into temptation... I can find it myself!