Recently, I was thinking about how to clean the exterior walls of my house and the parking lot, so I started researching high-pressure washers. There are so many brands and models that I was confused. Kärcher, Makita, アイリスオーヤマ, and others—it's hard to tell which one is actually the best.

So, I decided to compare 16 popular high-pressure washer models based on water pressure, cleaning area, noise level, and ease of handling. After all, the most important factors are water pressure strength and coverage area. Being able to efficiently remove dirt within the same amount of time is pretty crucial.

1st place is 京セラのRYOBI AJP-2030. It has over 20 times the water pressure of a standard garden hose, and a cleaning area of 593cm², which is quite wide. It can effectively remove stubborn dirt from exterior walls and parking lots. However, it doesn't have casters, so moving it around might be a bit inconvenient.

アイリスオーヤマ's コードレスタイプ is in 2nd place. It offers 11.4 times the water pressure and is also very quiet. If you're considering use in residential neighborhoods, this might be a safe choice.

工進's 充電式のコードレスタイプ is in 3rd place. It surprisingly achieves 83% water savings. It has a water pressure of 8.4 times and a cleaning area of 594cm², which is quite broad. Recommended for those who are conscious about water conservation.

The Makita high-performance model is 4th, and it also features a cordlessタイプ. Wireless models are increasing, and this one is a rare backpack-style unit. It's sufficient for car washing and light cleaning, but probably not suitable for large-scale exterior wall cleaning.

In summary, if you want to clean large areas thoroughly, prioritize water pressure; if you want quiet operation, focus on 静音性; and if you plan to do car washing as well, choose a model with a good set of accessories. The best choice depends on your specific usage needs.