Pentair Air Blower Kit Natural Gas Units (Models 400NA) | MasterTemp | 77707-0253 Testing & Measurement Parts Pool or spa water circulates

Pool or spa water circulates through the coil while combustion gases pass over the exterior surfaces

Brand Equipment Line Model / Part Number Notes Hayward SkimMaster Round Skimmer – 2″ SKT x 2½″ SPIG – 4

1/2 HP through 2-1/2 HP

or visible leakage at the filter base

Pentair Air Blower Kit Natural Gas Units (Models 400NA) | MasterTemp | 77707-0253 Testing & Measurement Parts Pool or spa water circulatesOEM Blower Kit for the MasterTemp 400NA Natural Gas Heater The Pentair Air Blower Kit (77707 0253) is the OEM replacement blower assembly for the MasterTemp 400NA natural gas heater. This kit is specific to the 400NA natural gas configuration confirm your heater's model designation before ordering. IMPORTANT: HEATER COMPONENT LICENSED TECHNICIAN REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified