I looked up the weather for Manila, the location the OP lists. Looking at the weather for the next 10 days there, the daytime highs range from 77-83. The lows range from 71-72. IMO, even if the OP doesn't have climate control, it is possible that the temps are on the cool side. The temps in our room range from 84-86 depending on the time of year and time of day. Based on the research I did before we switched to ambient heat only, I would not be comfortable with temperatures below 84F for extended periods without supplemental heat for the reasons I mentioned in my other post. I wish I could find the email from one of the vets we discussed the issue with, but I've tried and can't. It was several years ago, so I'm not sure I still have it.