Window position.

[Mountaineer370]

For many of us who grow inside our homes, there are not always choices about which window to use. We use the one(s) where there is space for orchids. We don't have the convenience of having a "plant room" with perfect exposure and/or the ability to put up multiple lights.

I believe your west window will be fine, with a few considerations. Have they been there long, or are these fairly new orchids? Do you plan on having other orchids besides Phalaenopsis? Different orchids have different light requirements, and for some, that window will be fine, for others, it's not nearly enough light.

If the afternoon sun shines brightly in that window, consider getting some sheer curtains, slatted blinds, or some other kind of window covering that can be opened and closed easily. You may also find that during the time of day when there is no sun on that side of the house, that location may benefit from supplemental lighting.

In my case, I have a large south-facing window. You would think that would be more than enough light. But I had trouble getting Phals to rebloom for me until I added supplemental lighting, at the recommendation of several members here. I also have sheer curtains that I draw at times the sun is coming in strongly. But there have been occasions when I'm not home to close them, or I simply forget, and there has been no detriment to the plants.

But everyone's particular circumstances are different, and we have to adjust accordingly.