- Genuine Hayward H-Series Replacement Thermistor.
- Compatible with ALL Hayward Forced Draft Heaters:
- H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, and H400FDP.
- Compatible with ALL Hayward ASME Forced Draft Heaters:
- H250FDNASME, H250FDPASME, H400FDNASME, and H400FDPASME.
- Compatible with ALL Hayward H-Series A/G H135 Heaters:
- H135ID1, and H135ID1.
- Compatible with ALL Hayward HDF Small Footprint Heaters:
- HDF400
- Please Note: FDXLTER1930 is compatible with all residential and commerical heaters built December 2020 and prior.
- Please Note: FDXLTER1931 is compatible with all residential heaters built January 2021 and forward.
- Please Note: FDXLTER1931 is the ONLY Thermistor compatible with HDF heaters.
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