They hold over two hundred sixty patents on pressure washers. For 2009 they have twelve different electric power washer models that have flow rates from 1.25 gallons per minute to 1.5 gallons per minute and pressure ranges from 1400 to 1850 PSI. These are only the residential models and do not take into account any of the commercial electric power washers.

For residential gas pressure washers Karcher offers 6 models from residential to professional. The three residential models max out at 2600 PSI, the Prosumer model is rated at 3000 PSI and the Professional models max out at 4000 PSI. All but the opening price point residential model come with Honda engines with a one year Karcher warranty on the entire machine and a two year Honda warranty for the engine. All their spray wands are attached via a Quick-Connect system for easy changing and their triggers are all supplied with a child safety lock.

With the high pressure creating stress in the high pressure hose, a child accidentally releasing the trigger could cause the hose and wand to strike someone and cause injury or death. Always create a safe environment when working with a Karcher Power Washer.

All of the Karcher models come with Quick Connect nozzles in zero, twenty five, 40 degree and detergent models. You can buy additional nozzles specific to the jobs you want to do. Karcher allows you to compare any of their models side by side on their website. You can determine which features are most important and choose the best model. The only drawback is a lack of pricing. They do offer links to the websites where each model is sold so you can access their pricing for the different models. One interesting note is that if you buy your Karcher power washer from anyone who is not an authorized dealer or they will not honor the warranty.