I like the ball design, but I think making the "H A" be involved in the design is too abstract and it seems very busy. What if the ball were a "yin and yang" and the flames were on the left going upwards and the ice cicles dripping down on the right? I like the ball - but I want it to be SIMPLE and not busy. I also like the bold font.
Not as big of a fan of the extended tail on the "g" of "Heating".