I would probably replace it now while everything is working.
You know that tablet is cheap and is going to die. Figure out the procedure to replace it with something that doesn't suck before you've lost your heat/air conditioning.
You can also plan it out so it's a neater install if you do the installation now, rather than when it craps out. I know for a fact that if I had to do what this guy is after this quest with no functioning air con, that tablet is dangling out the wall for about 2 years until I bother to look at it again.
