Pentair Inlet Fitting Package ETi Heat Exchanger for ETi 250 / ETi 400 Pool Heater | 461103
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- SKU:
- 461103
-
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About This Item
The Pentair Inlet Fitting Package ETi Heat Exchanger (461103) is the OEM replacement inlet fitting package for the ETi 250 and ETi 400 gas pool heater series, connecting the water supply line to the heat exchanger assembly.
⚠️ IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED
Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.
The inlet fitting package seals the water inlet connection at the heat exchanger, maintaining a leak-free interface between the plumbing supply and the exchanger core. A failed or degraded fitting at this junction can result in water intrusion into the heater cabinet, reduced flow through the heat exchanger, and accelerated corrosion of internal components. Replacing this fitting with the OEM part ensures the correct thread engagement, sealing geometry, and material compatibility for the ETi series heater design.
Specifications
| Pentair Part Number | 461103 |
| Part Name | Fitting, Inlet Package — ETi Heat Exchanger |
| Quantity Included | Each |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | ETi 250 Pool and Spa Heater — ETi Series | ETi-250 | — |
| Pentair | ETi® 400 Heater — ETi Series | ETi400 | — |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Pro Tip
Before ordering, locate the part number stamped or molded on the existing fitting and confirm it matches 461103. When this fitting is being replaced, inspect the mating heat exchanger port and surrounding connections for corrosion or thread damage — addressing any secondary wear at the same service visit avoids a repeat disassembly. All work on ETi heater plumbing connections should be performed by a licensed pool professional.
