My wife Margaret and I recently completed a 16 year circumnavigation aboard our sailboat TOMORROW using your model 12110 SP-1E engine driven and 110 VAC systems all the way around. System performance was outstanding! The A/C system did not reguire any maintenance. The engine system needed only regular upkeep and, the few times we needed parts or advice, your staff responded promptly and effectively. We would recommend Technautic eguipment without reservation!