Pentair Air Blower Kit – Propane Units (Models 400LP) | MasterTemp | 77707-0256
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- SKU:
- 77707-0256
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About This Item
The Pentair Air Blower Kit (77707-0256) is the OEM replacement blower assembly for the MasterTemp 400LP propane heater. This kit restores the forced-air combustion system that delivers the precise air-to-fuel ratio required for safe, efficient burner operation in the 400,000 BTU propane configuration.
⚠️ IMPORTANT: KIT LISTING — MULTIPLE COMPONENTS INCLUDED
This listing is a complete Air Blower Kit, not a single blower component. All kit contents are included as a single unit of measure. Confirm all components are accounted for before beginning service.
⚠️ 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 air blower is a critical combustion component in the MasterTemp 400LP burner system. It supplies the forced airflow required to sustain proper ignition and flame quality at the 400,000 BTU propane output level. A failed or degraded blower will result in ignition faults, incomplete combustion, or heater lockout. This kit is specific to the 400LP propane model — it is not interchangeable with natural gas variants or lower-BTU configurations.
Specifications
| Pentair Part Number | 77707-0256 |
| Part Name | Air Blower Kit – Propane Units (Models 400LP) |
| Fuel Type | Propane (LP) only |
| Quantity Included | Kit (1 complete assembly) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | MasterTemp — MasterTemp Series | 400LP | Air Blower Kit for Propane 400LP Model only |
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, confirm your heater's model number on the rating plate — typically located on the side or rear of the unit. This blower kit is engineered specifically for the 400LP propane configuration. The natural gas 400 model uses a different blower assembly and the two are not interchangeable. If your heater is exhibiting ignition lockout, blower fault codes, or unusual combustion noise, have a licensed technician verify the blower is the root cause before replacing — pressure switch and gas valve faults can produce similar symptoms.
