How can we clean our vinyl siding on the north side of our house?

Pressure wash it - best way to clean it well and you can add bleach or soap as needed.

Power wash it with cleaner made for power washing. Have also used bleach and water then scrub and rinse.

Yep, pressure washer.

use wet and forget

Home Depot carries a product "spray and Forget it" You put it in a garden sprayer & spray it on once a year... then each time it rains, it binds with the rain to work. It's not harsh or bad for the enviorment. It's $40 for enought to cover 1000 feet. You dilute it 5 to 1.

I would mix a small amount of Clorox and dawn dishwash liquid in a small bucket and wash with a soft brush a 12 by 12 inch square where it is the dirtiest and maybe a less noticeable area.

Remember and adjust the Clorox to have the amount needed only and rinse and wash several times and maybe leave on area for about 30 minutes before washing. If it does the job and does not damage the finish then use. Remember to rinse well and maybe the last wash could be with a bucket of water and dawn only And long handle adjustable soft brush from Lowes Hardware.

Power washing is one way.

Use Dawn dish soap and scrub brush, l did whole house, works beautiful

Use a siding cleaner Home Depot has it.

Good question... Answer... Tilex and Dawn in power washer... Works great....

Here is an article about cleaning windows in winter:

https://www.clerawindows.com/blog/how-to-clean-your-windows-in-the-winter/

Hope this would be helpful to you.