Concerns with install solar during winter?

[QingGuy]

I'm ready to install my solar but not sure if I should do it while we could still have a couple of days below freezing left this winter. I suppose they would install, test, then could drain, right?

Input greatly appreciated!

 

[SacPoolPros]

We have installed plenty of solar in the winter as long as they drain the pipes after it is tested you will be fine