Name: Pentair MasterTemp Max-E-Therm Thermal Regulator | 38000-0007S
Brand: Pentair
SKU: 38000-0007S
Price: 64.94 USD
Availability: InStock

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Pentair MasterTemp Max - E - Therm Thermal Regulator | 38000 - 0007S - Heater Parts - img - 1

Pentair MasterTemp Max-E-Therm Thermal Regulator | 38000-0007S

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Pentair 38000-0007S – Thermal Regulator with Spring Clip

Product Overview

The Pentair 38000-0007S is a replacement thermal regulator designed for use in certain Pentair and Sta-Rite pool heaters. It controls flow through the heat exchanger to maintain proper water outlet temperature and includes a spring clip for secure installation.

Key Features

Replacement thermal regulator assembly for compatible heater units.
Includes spring clip for easy retention and proper seating.
Ensures accurate thermal control and helps prevent heater short-cycling.
Designed for direct fit and OEM performance when servicing specified heaters.

Technical Specifications

Part Number: 38000-0007S
Application: Heater water system regulator
Includes: Thermal regulator component and retention spring clip

Compatible Equipment

This thermal regulator is compatible with select models of Pentair MasterTemp ® and Sta-Rite Max-E-Therm ® pool heaters. Always verify the part number on your existing regulator before ordering.

Installation Instructions

Disconnect power and close water supply to the heater before servicing.
Drain the heater or relieve water pressure so the housing can be safely opened.
Remove the old thermal regulator and spring clip, noting orientation.
Install the new 38000-0007S regulator, secure it with the included spring clip in the correct position.
Restore water flow and power, then monitor system startup for correct temperature behavior and absence of leaks.

Troubleshooting

Heater short-cycles or overheats: Verify proper installation of the regulator and spring clip; ensure correct flow through the heat exchanger.
No heat or low outlet temperature: Confirm regulator is seated correctly and water flow is within heater specification.
Leak at regulator location: Inspect the sealing surface, ensure the regulator and clip are properly engaged, and check for damage or debris in the housing.

Maintenance Tip

Inspect the thermal regulator during annual heater service. If the spring clip shows signs of wear or the regulator body is discolored or corroded, replace immediately to maintain safe and efficient heater operation.

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

We do not ship on Saturday or Sunday.
Orders totaling more than $300 will require signature confirmation upon delivery.
We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
Expedited shipping options are available at checkout.

Return Policy:

Products that are received damaged will receive a refund in store credit.
Most products are eligible for return within 30 days of receipt, except where noted below.
To initiate a return, please complete an RMA form prior to sending your item back.
Original shipping costs are non-refundable and will be deducted from the return credit.
Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
Some returns will be charged an automatic 15% restocking fee.
We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
Please complete the return form to receive your RMA number and return shipping label.
Chemical products are not eligible for return under any circumstances.
The Pentair Colorsync 618031 is not eligible for return.
Pool cleaners are not eligible for return.
Opened seals and o-rings are not eligible for return.
Capacitors are not eligible for return.
Plastic popup tools are not eligible for return.
Automation components and circuit boards are not eligible for return.
If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.