[richardtavor]

How often to you have to clean your colle tors? If you don’t clean them ebmvery month, how much efficiency is lost?

[Tell It Right]

I've had them half a year and don't clean them. They're too high up and on too steep of a roof to clean.

But the steep pitch of my roof is sort of a self-cleaning mechanism. And when I get a small freeze in the winter that's supposed to clean them too (when the ice melts off in the morning, which it almost always does by 7 AM on my metal roof, it's supposed to be a natural cleaning).

We'll see.