In Australia we call it a reverse cycle air conditioner. A heat pump is something different here in Australia.Yes, the English name is "heat pump" for a machine that heats or cools air. Most air conditioners only cool.
Yes, it's maybe not skin safe at all. But I thought if it was safe enough to inhale, it would be somewhat not too bad for a soap you will wash off. And it was an emergency solution, since I had no fragrances or essential oils.
I would not use that soap on my skin. Just because it can be used to freshen a room doesn't mean it is safe for the skin. They are not made to be used on the skin diluted or not. Since it's only for your use it's totally up to you and if you choose to possibly cause an adverse reaction.
I would not recommend making anymore soap unless you plan on making it unscented until you can find skin safe EO's or FO's.
I don't mean to sound harsh but it's really not safe to do.
Assuming your fragrance oil is docile, as that one appears to be, a few accelerants you could try are a dribble of clove oil or a few percentage points of a free fatty acid such as stearic if you can get it.But anyway. I want to make some more soap, not today but maybe tomorrow, and will be very glad if someone know of a trick to get olive oil soap to come to a thick trace, without a stick blender?