I built a smallish mini barn (<200 sq.ft.) that I plan to use as a small shop, until I can build something larger. I would like to be able to maintain a pretty steady temp. My question is this: what’s the difference between a Toyo OM 22 and an L 30? I had one guy tell me that the 22 is the new 30 but both models are still listed on the Toyo website. I glanced over the descriptions but there was nothing jumping out other than some of the specs are slightly different. If you can tell me the differences between the two, please chime in. Also, any experiences with either would be good to hear about. Thanks in advance.