The Pentair Air Blower Kit (77707-0251) is the OEM replacement blower assembly for the MasterTemp 200NA natural gas heater. This kit restores proper combustion airflow to the burner system, returning your heater to factory-specified performance.
⚠️ 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 supplied by Pentair for the 200NA model.
⚠️ 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 supplies the forced-draft combustion air required for the MasterTemp 200NA burner system to ignite and sustain a clean, efficient flame. A failing blower can result in ignition lockout, incomplete combustion, or heater shutdown on safety. This kit provides the complete OEM replacement assembly matched specifically to the 200NA natural gas configuration — not interchangeable with propane or higher-BTU models.
Specifications
| Pentair Part Number |
77707-0251 |
| Part Name |
Air Blower Kit — Natural Gas Units (Models 200NA) |
| Fuel Type |
Natural Gas only |
| Compatible Model |
MasterTemp 200NA |
| Quantity Included |
Kit (Each) |
Fits Into
| Brand |
Equipment Line |
Model / Part Number |
Notes |
| Pentair |
MasterTemp — MasterTemp Series |
200NA |
Air Blower Kit for Natural Gas 200NA 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 inside of the front access panel. This blower kit is specific to the 200NA natural gas model; the propane (LP) equivalent and higher-BTU models use different blower assemblies. Ordering the wrong kit is a common and costly mistake. When replacing the blower, have a licensed technician inspect the burner tray and ignition components at the same service visit — these components share the same service access and wear on a similar schedule.
