I have a 4-hour commercial job that I do every 6 weeks on a Sunday, and today was the day. So being as I only use DI (soft water area) I though I'd try filling my tank with hot water from the house's combi boiler. (Heating's on anyway, so don't think it cost anymore).
So the water wasn't scalding hot, just nice and warm.
Amazing results! I'm really suprised what a difference it made.
Here is what I found, in the order I found it:
1: Hoses MUCH easier to handle. Nice and supple, less snagging easy to reel in and reel out. Also they are now hand-warmers.
2: Water dries quick - so you can be absolutely sure you've made no mistakes. Also makes it easier to miss windows though, as its harder to tell what has and hasn't been done.
3: Snail trails - usually a right pain in the behind taking a lot of scrubbing, come off as easy as pie.
4: Water definately seems to sheet better - don't know if that's just my imagination.
5: when you get the water on your hands (as always happens a bit) it doesn't freeze you.
6: just seems to make the whole job easier somehow.
Definately will be using for the rest of the winter, and maybe beyond...?
This job is a regular job so no manky windows, I'll be interested to see the difference on dirtier windows.
Hot water is the dogs danglies IMO.