Pentair Rodent Resistant Air Orifice Protection Cap | MasterTemp & Max-E-Therm Heaters | 475265
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- SKU:
- 475265
-
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About This Item
The Pentair Rodent Resistant Air Orifice Protection Cap (475265) is the OEM replacement protective accessory for Pentair MasterTemp and Max-E-Therm pool and spa heaters, designed to prevent rodent intrusion through the air orifice opening.
⚠️ IMPORTANT: HEATER COMPONENT — PROFESSIONAL SERVICING 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.
Rodents can enter a heater's air orifice during periods of inactivity — particularly during winter shutdowns or extended off-seasons — causing damage to internal burner components and creating a potential safety hazard. This cap installs over the air orifice to block access while maintaining the airflow characteristics required for proper heater ignition and combustion. Replace or inspect this cap as part of any seasonal startup or shutdown service.
Specifications
| Pentair Part Number | 475265 |
| Part Name | Rodent Resistant Air Orifice Protection Cap |
| Part Category | Protective Accessories |
| Quantity Included | 1 (Each) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | MasterTemp 200NA | 200NA | Rodent Resistant Air Orifice Protection Cap for Max-E-Therm heaters |
| Pentair | MasterTemp 200LP | 200LP | Rodent Resistant Air Orifice Protection Cap for Max-E-Therm heaters |
| Pentair | MasterTemp 400NA | 400NA | Rodent Resistant Air Orifice Protection Cap for Max-E-Therm heaters |
| Pentair | MasterTemp 400LP | 400LP | Rodent Resistant Air Orifice Protection Cap for Max-E-Therm heaters |
| Pentair | Max-E-Therm 333 Natural Gas | 333NA | Rodent Resistant Air Orifice Protection Cap for Max-E-Therm heaters |
| Pentair | Max-E-Therm 333 Propane | 333LP | Rodent Resistant Air Orifice Protection Cap for Max-E-Therm heaters |
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
This cap is an easy addition to any seasonal heater service — install it at the end of the swim season and remove it before the first startup of the year. If your heater has experienced an unexplained ignition failure after a period of non-use, inspect the air orifice for nesting material or debris before replacing any ignition components. A blocked orifice is a common and easily overlooked cause of startup issues.
