Pentair Thermal Regulator with Spring Clip | MasterTemp & Max-E-Therm Heaters | 38000-0007S
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- SKU:
- 38000-0007S
-
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About This Item
The Pentair Thermal Regulator (38000-0007S) is the OEM replacement thermal regulator for Pentair MasterTemp and Max-E-Therm pool heaters. This listing includes the spring clip as part of the assembly.
⚠️ IMPORTANT: HEATER COMPONENT — 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 thermal regulator controls water temperature within the heater's heat exchanger by regulating flow based on water temperature. A failed or stuck thermal regulator can result in overheating, inadequate heat transfer, or nuisance high-limit trips. The included spring clip secures the regulator in its housing — replace both components together as a matched assembly when servicing.
Specifications
| Pentair Part Number | 38000-0007S |
| Part Name | Thermal Regulator (Includes Spring Clip) |
| Quantity Included | Each (1 thermal regulator + spring clip) |
| Compatible Equipment | Pentair MasterTemp and Max-E-Therm heater series |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | Max-E-Therm 200 (NA/LP Series) | MAX-E-THERM-200-NA | Thermal Regulator includes Spring Clip |
| Pentair | Max-E-Therm 333 (NA/LP Series) | MAX-E-THERM-333-NA | Thermal Regulator includes Spring Clip |
| Pentair | Max-E-Therm 400 (NA/LP Series) | MAX-E-THERM-400-NA | Thermal Regulator includes Spring Clip |
| Pentair | Max-E-Therm 200 (HD Series) | MAX-E-THERM-200-HD | Thermal Regulator includes Spring Clip |
| Pentair | Max-E-Therm 333 (HD Series) | MAX-E-THERM-333-HD | Thermal Regulator includes Spring Clip |
| Pentair | Max-E-Therm 400 (HD Series) | MAX-E-THERM-400-HD | Thermal Regulator includes Spring Clip |
| Pentair | MasterTemp 175 — MasterTemp Series | 175NA | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 175 — MasterTemp Series | 175LP | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 200 — MasterTemp Series | 200NA | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 200 — MasterTemp Series | 200LP | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 250 — MasterTemp Series | 250NA | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 250 — MasterTemp Series | 250LP | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 300 — MasterTemp Series | 300NA | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 300 — MasterTemp Series | 300LP | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 400 — MasterTemp Series | 400NA | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
| Pentair | MasterTemp 400 — MasterTemp Series | 400LP | Thermal Regulator includes Spring Clip. Verify fitment before ordering. |
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, locate the part number stamped or molded on the existing thermal regulator in your heater and confirm it matches 38000-0007S. The spring clip is included with this assembly — do not order it separately. If your heater has been exhibiting nuisance high-limit shutdowns or slow temperature recovery, the thermal regulator is a common service item to inspect. Have a licensed pool professional or qualified HVAC technician perform the replacement.
