Only had mine for about 3 weeks now, but my temperatures are a bit higher than daz. I think it’s because I have mine set up with a second pump constantly recirculating hot water back into the tank.
I can now adjust from Luke warm to scalding hot. Even when I’ve got 100 metres of hose off the reel and about 3 degrees outside, I can get 60 plus degrees at the brush head. (Great for plastics and conservatory roofs but too hot for glass)
I just make sure I keep checking the temp (with my hand) every so often and tweak the heater as necessary.
I’m Realising now that although thermal shock can happen, it’s very rare, and if a window is fitted properly it should be fine. I’m a lot less worried now. Worse case scenario that I break a window I will pay the £60-80 for a glazier to fix it. Not the end of the world.
What I would say though....if you are a one man band, then the 5kw will be plenty if you just want it for general window cleaning. You’ll have nice hot water no matter what the conditions.
I got the 9kw because there are sometimes two of us out, and I wanted the option to have really really hot for plastic cleans and facias etc.
For general window cleaning I never run my 9kw on full heat.
I run pump 2 (that’s recycling hot water back to the tank) on full heat, and the pump on my side on about half heat. This gives me 50 degrees at the brush head with about 30-50 metres of hose off the reel which I find is the standard amount for me, and is so warm that it’s uncomfortable to keep your hand under the jets for more than 10 seconds.
If I was cleaning delicate glass, I would turn my side right down and it would be just warm.
The plus side for me running my set up like this, is that at about 1 or 2 pm I power down the heater because I’ve got 55 degree water in my tank. That’s enough to give nice hot water for the rest of the working day.
Once you get used to how these heaters work you will love them.
I was cleaning a big residential care home yesterday which is nearly all traditional, (windows turn in and get cleaned along with the insides) and the last hour and a half is WFP pole work. Usually that last hour as horrible because you’ve been in the warm all day, and then you have to go out in the freezing cold. ( it was 3 degrees here hesterday)
Yesterday it was awesome. Warm pole, warm hands, windows were so easy to clean, even the ones next to trees and bushes which for the past 8 weeks had been getting battered by a few storms.
I’m enjoying windowc cleaning again.
🔥