You don't need a huge pressure washer to use this long 24 foot telescoping wand extension from Janz - sold on Amazon. Here's how to use it with a small pressure washer. I bought this to make it quicker and safer to clean the siding. Works great compared to the old way I used to do this.
Check it out using my paid Amazon Affiliate Links below (Thank you! if you decide to make a purchase).
https://amzn.to/3y8I2FR janz Aluminum 24 FT Telescoping Pressure Washer Wand
https://amzn.to/3LILnhS JANZ 24 FT Pressure Washer Telescoping Wand with Power Washer Extension Wands