A/C Removed...now what?

The A/C/heat is all one unit (2pieces) you will have to block that off or find a heat only unit. I would just find the vent that goes on there, much easier. I use mine just to circulate air when it's not hot enough for the A/C.
What part of Spokane are you in? Lived there for 45 yrs before moving to TX
Bruce