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Apr 16, 2026 - 10:26 AM
Yes, this retrofit board is compatible with the HP21004T heat pump model, ensuring a secure fit and proper functionality for users of this particular system.
Is this control kit compatible with HP21004T? Hayward Retrofit Board-Control Kit for Summit, HPX51100122201
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Open Apr 16, 2026 - 10:26 AM
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Hayward Retrofit Board-Control Kit for Summit, HPX51100122201
" Hayward HPX51100122201 Retrofit Board-Control Kit for Summit Features Replaces SMX306000016 Electronic Control Board For use with HP21404T, HP21004T, HP21124T and HP21254T "
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