You asked for a review on the solarthermal class I took but I could not find a review area to do a write-up. So I am writing something under the product I had purchased in the past. The sharp 224\'s work just as advertised and I am happy with my purchase.\r\n In regard to the solarthermal class, that was informative but I was a little disappointed that the follow-up class was canceled and I have to wait until September to take it. That kind of kills the whole summer for getting pool heating jobs.\r\n Another aspect I\'m not thrilled with is the customer service. I have sent emails and a vmail to a rep with no reply. I even sent an email to the general tech support section to get a question answered on a solarthermal system. I still haven\'t gotten any response and have had to sign on with another distributer. Hoping you get the problems worked out and we can do some business.