My gutters are blocked (most likely with large wet sycamore leaves) and I don't have access to an extension ladder long enough to get up there (also have other priorities for life-shortening activities than ladder-climbing.)  As this is going to be a semi-annual need it seems worth investing a bit into.

 

I've been exploring various ideas and see there are 24' wands available for pressure washers, as well as curved attachments specifically for this purpose:

 

http://www.amazon.com/General-Pump-Chrome-Cleaner-Attachment/dp/B00...

 

My question (besides whether this is going to be a complete disaster):

 

The washer units I see in my search that seem to be about right in terms of size and affordability tend to run around 1600 PSI; the wands say 2500-4000 PSI. What does the lower number mean? What would happen if I used above-mentioned wand with less than the minimum PSI?

 

Thanks for any useful advice.

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The lower pressure will not be able to create as forceful a stream to blast out the stuff blocking your gutters.  You may be able to get enough force by changing to a smaller tip at the end of the wand but then the flow may not be enough.

 

I would recommend not going with the lower pressure unit and a high pressure attachment because chances are you are going to be disappointed with the performance.

My dad's got a super leaf blower with a U-bend attachment that works amazingly well.  Air blows even wet leaves away like magic.  I've never had good luck with water pressure washers.   I don't know how well a blower would work at 20-25 feet of tubing.

 

The Stihl blower has two 5-foot straight attachments before the U-bend and does fairly well although you do get wet leaves and muck blown in your face when you use it so lately I just get on the roof and blow straight from right up there when I do his eaves 3-4 times a year (darn helicopter seeds and pine needles!)  His roof isn't very steep and it is just easier/faster to just get a ladder and walk around up there.  It sounds like this isn't an option for your roof.

 

Be extremely careful around the electric service if you have overhead wires and are using metal wands.  Even 120/240v can  kill you fairly easily holding a wet metal pipe and standing in a puddle of water.  One of the leading causes of electrocution is homeowners messing around near their overhead service entrances with long objects cleaning gutters or setting up aluminum ladders. 

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