Pentair Insulation Kit for MasterTemp & Max-E-Therm Heaters | 77707-0008
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- SKU:
- 77707-0008
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About This Item
The Pentair Insulation Kit (77707-0008) is the OEM replacement insulation kit for the MasterTemp and Max-E-Therm heater series, restoring the thermal barrier that protects the heater cabinet and surrounding components from combustion heat.
IMPORTANT: KIT LISTING — MULTIPLE PIECES INCLUDED
This listing is a kit, not a single piece. Kit contents vary by heater model — confirm your model number and cross-reference the item numbers in the Fits Into table below before ordering.
IMPORTANT: HEATER COMPONENT — PROFESSIONAL SERVICE 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 insulation kit lines the combustion chamber and cabinet interior of the heater, maintaining the thermal barrier between the burner assembly and the surrounding cabinet structure. Worn, cracked, or missing insulation allows heat to transfer to surfaces and components not designed to tolerate it, accelerating wear on nearby parts and reducing heating efficiency. Replacing the kit restores the heater's designed thermal management.
Specifications
| Pentair Part Number | 77707-0008 |
| Part Name | Insulation Kit |
| Part Category | Insulation Kits |
| Quantity Included | 1 Kit (multiple insulation pieces; item count and specific pieces vary by heater model — see Fits Into table below) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | MasterTemp | MasterTemp125 | Includes Item Nos. 13, 14, 16, 17, 18, 19 |
| Pentair | MasterTemp | 175NA | Insulation kit |
| Pentair | MasterTemp | 175LP | Insulation kit |
| Pentair | MasterTemp | 200NA | Insulation kit |
| Pentair | MasterTemp | 200LP | Insulation kit |
| Pentair | MasterTemp | 250NA | Insulation kit |
| Pentair | MasterTemp | 250LP | Insulation kit |
| Pentair | MasterTemp | 300NA | Insulation kit |
| Pentair | MasterTemp | 300LP | Insulation kit |
| Pentair | MasterTemp | 400NA | Insulation kit |
| Pentair | MasterTemp | 400LP | Insulation kit |
| Pentair | Max-E-Therm | 333NA | Includes Item Nos. 13, 15, 20, 21, 22, 23, 24, 25, 26 |
| Pentair | Max-E-Therm | 333LP | Includes Item Nos. 13, 15, 20, 21, 22, 23, 24, 25, 26 |
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.
Poolaroo Pro Tip
Kit contents are not identical across every model in this listing — the MasterTemp 125 uses Item Nos. 13, 14, 16, 17, 18, and 19, while the Max-E-Therm 333 uses a different set (Item Nos. 13, 15, 20–26). Pull your heater's exploded parts diagram and match item numbers against the pieces received before installation to confirm you have the correct insulation for your specific model.
