Based on a very bad experience I like to warn the message board community about purchasing a solar water heater from SolarFuture in Manzanillo of a Global Center solar heater. I purchased mine in April last year. It was always leaking. The technician accepted that there is an internal leak in the water tank. However even after many phone calls the warranty was never accepted. A change was proposed my the distributor Solar Future but as well never took place. The service technician had to be paid otherwise he would not come and check the problem etc. Anyhow I had to buy a new heater after less than 8 months of operation.
I have heard that in a similar problem in LM as well the warranty was not accepted.