I mentioned heating because it's Baltic in my unit now & the only change over the next few months is that it will get colder lol. I was looking at putting in a heat pump having read on another forum how good some of them are now. Other good thing is that it is easy to install & to remove should I give up the unit or my landlord kick me out at some point in the future.
Still not 100% sure what to do but doesn't hurt to look about and check what's available & prices.