My pool builder cheaped out and installed a single speed pump as the filter pump (I didn't know any better at the time). Its a Hayward TriStar 2HP motor with an SF of 1.1 (Hayward SP3215Z). In looking at the Tristar documentation //www.hayward-pool.com/pdf/parts-diagrams/TriStar.pdf, it appears that I might be able to save some money by keeping the wet end and just switching the fixed speed motor to a Tristar VSP (http://www.hayward-pool.com/shop/en/...on-sp3202vspnd).
The other alternative is to switch out the whole pump, including the wet end, to an Ecostar or a Maxflo VS or even switch brands to Pentair Intelliflow. Another consideration to make sure that whatever VSP selected is supported by the Omnilogic. The only explicit mention of a VSP in the Omnilogic documentation is the EcoStar.
I read somewhere that the Tristar VSP motor is very different from the others mentioned above but not sure of the details. Any suggestions?
P.S. I plan on keeping the existing pump as a backup.