High, hot inside windows

Hello All, Is there a window cleaning solution that works best for inside hot windows? While on a high ladder it was extremely difficult to squeegee before my solution dried (unger pro formula window cleaning solution). The windows were hot from the sun.
Also does anyone have a opinion on the new methods (no squeegee) for cleaning inside windows?

Thanks a lot,
Cory Bedell
Sunrise Window Cleaning, Reno, Nv.

You can look into an indoor pure water system. W.C.R. has a few. I like the Unger & IPC set up