The 2400 W is the only model we use for the Polarvak,it has a twin vac and has plenty of power, it comes in both 230v and 110v, we have some that have purchased one along with a genny, although most have purchased a 230v and plug straight into their customers electric, then others who work on site or within a commercial envirement use a 110v with a transformer.
people that plug straight into their customers should be using 110 volt, why ? this is classed as commercial use :

commercial in another term is business use, the said window cleaner cleaning out the gutters is using it as a business tool. It is then used for a commercial job.
Why do supplier dress this up ?
Please be honest, you just supply to your demand

and people wonder why us window cleaners get a bad name when suppliers sell the wrong tools for the jobs to people that do not know the corerect means of doing things.................... :

this was not directly aimed at you by the way, but many so called suppliers are mis informing people just to make a profit, this winds me up, I am all for making money but in an honest way.
Ian
p.s please correct any points that I am wrong on and I will say sorry to each, please povide the reasons as this interestes me a great deal.