I have been told 4 inches for each gpm of your machine so for a 4gpm machine you
would want a 16 inch surface cleaner. That is the info I have been given. Best regards.
Bill Sullivan owner
Bill’s Window Cleaning.
902-471-8008.
The Whisper Wash Classic has such a great swivel on it that it will work just fine with 4GPM - that’s what I would recommend.
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Classic cover is 19" but the bar is only 17" so I think a 4 gpm machine would work fine. I used a 20" hammerhead with a 4 gpm machine. It was a little slow walking, but it got the job done.
Just got my Whisper Wash Classic today and LOVE IT!!! Good bye Hammerhead-ache!! Hope to never have to use it again.
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Congrats, classic is awesome. Takes getting used to, especially not getting as close as a hammerhead, to edges, but it makes it up in speed and not leaving lines all over the place.
Where What is the best price for a classic? I found a Ebay $598 guy has 100% feedback other is one off google price is $625. i think Bob is $625
Some say dont mess with Ebay u will get burned… I’m going to get one… I wonder how much my 20" 6 mos old NStar is worth… It also has a wand on the side of it…
I got my Classic from Pressure Tek for $629.95. Even if that is a little more expensive I believe it’s worth buying it from a recommended proven source. eBay may work out, but not worth the gamble in my opinion…
Aaron Luthi
Ace Pressure Washing
Silverton, OR
971.701.4770
That’s only a 4.5% difference in price. Well worth it to have someone knowledgable and willing to answer questions when you need them. Ebay-ers don’t need to offer any post-sales support (other than returns, if offered) in order to earn 100% positive feedback, from what I understand. You’re gambling on a $600 purchase, over $27. Think about it 
Well worth the extra few bucks…Bob will include the correct nozzles! I doubt the Ebay guy will.
Classic comes with 2502’s.
I have run a whisper wash sc for the past 3 years, it has always performed awesome and without any troubles
