There is no magic horsepower rating for a heat exchanger. A given heat exchanger will transmit varying amounts of heat, depending on the flow of the two fluids, and the differential temperature.
I see that we're not back to talking technical issues yet, and we just keep piling on....This thread is locked. Open your own threads now, if its technical, post it here, if not, then find the appropriate forum. I don't like babysitting a thread. This is the second time I've intervened in a thread in 18 months as moderator, the first locked thread.