Pentair Transformer | ThermalFlo HP Titanium Heat Pump / UltraTemp 220 ETi | 473155Z Youth Floats photograph the ring and niche

photograph the ring and niche face side-by-side and compare the bolt pattern to the product image before adding to cart

Connection Size 3" Quantity Included 1 (two required per filter — see callout above) Fits Into

When the gasket deteriorates

Upstream (before): ~10 inches minimum of straight pipe

Pentair Transformer | ThermalFlo HP Titanium Heat Pump / UltraTemp 220 ETi | 473155Z Youth Floats photograph the ring and nicheThe Pentair Transformer (473155Z) is the OEM replacement transformer for the ThermalFlo HP Titanium heat pump series and the UltraTemp 220 ETi heater, restoring proper low voltage control circuit operation when the original component has failed. IMPORTANT: ELECTRICAL COMPONENT PROFESSIONAL INSTALLATION REQUIRED This transformer is an internal electrical component of a heat pump or heater control system. Installation or replacement must be performed by