2010/2011/2012  Hot Spot Relay REL or Rhythm l RHY  and Caldera Marino MRN and Vanto VNT is indicated by the letter in the serial number. for example.

Hot Spot Models:

Serial Number  REL OR RHY-3M2015 the serial number would read REL OR RHY is model  3 third quarter M year(2010) and 2015 is the unit number made.

Serial Number  REL OR RHY-3N2015 the serial number would read REL OR RHY is model  3 third quarter N year(2011) and 2015 is the unit number made.

 Serial Number  REL OR RHY-3P2015 the serial number would read REL OR RHY is model  3 third quarter N year(2012) and 2015 is the unit number made.

Caldera Models:

Serial Number  MRN OR VNT-3M2015 the serial number would read MRN OR VNT is model  3 third quarter M year(2010) and 2015 is the unit number made.

Serial Number  MRN OR VNT-3N2015 the serial number would read MRN OR VNT is model  3 third quarter N year(2011) and 2015 is the unit number made.

 Serial Number  MRN OR VNT-3P2015 the serial number would read MRN OR VNT is model  3 third quarter N year(2012) and 2015 is the unit number made.

The Only Difference Between Models is Caldera Marino/ Vanto comes with the Spa Frog System and a different cabiniet

Picture of Relay/ Marino

Picture of Rhythm / Vanto

Below is a list of common replacement items. Be sure to see specifications page for parts diagrams or related Videos