Product Overview

The Pentair & Sta-Rite Combustion Blower Kit is a genuine OEM replacement for compatible 400,000-BTU natural-gas MasterTemp and Max-E-Therm pool and spa heaters. The blower supplies airflow to the heater’s combustion system, supporting the air-and-fuel mixture needed for operation.

When a qualified technician confirms that the existing blower requires replacement, this kit provides a manufacturer-specified repair option. It includes a single-voltage blower adapter and allows serviceable heater components to remain in use.

Ideal For

Repairing compatible Pentair MasterTemp 400 natural-gas heaters.

Servicing Sta-Rite Max-E-Therm 400 natural-gas heaters.

Pool professionals replacing a diagnosed failed combustion blower.

Key Features

Genuine Pentair replacement kit listed in the manufacturer’s heater parts diagrams.

Designed for the specified 400,000-BTU natural-gas heater configurations.

Includes the single-voltage blower adapter identified in Pentair’s parts documentation.

Replaces the combustion blower assembly within the heater’s burner system.

Benefits

Supports restoration of combustion airflow when blower failure is the confirmed problem.

Provides an OEM component for repairs to compatible heater models.

Offers a targeted repair option when the remaining heater components are in serviceable condition.

Specifications

What’s Included

• Combustion air blower replacement assembly.
• Single-voltage blower adapter.

Have the installer confirm any additional gasket or service-part requirements before beginning the repair.

Warranty & Compatibility

Compatibility

This kit is listed for Pentair MasterTemp 400NA and Sta-Rite Max-E-Therm 400NA natural-gas heaters, including the Max-E-Therm SR400NA configuration.

Verify the heater’s complete model number, fuel designation, manufacturing information, and applicable parts diagram before ordering. A matching 400,000-BTU rating alone does not establish compatibility.

Propane heaters use a different blower kit. This component is also distinct from the separately listed gas valve, burner flameholder, and heat exchanger assemblies.

Installation and Repair Context

Installation must be performed by a qualified pool-heater service professional. The technician should confirm the cause of the malfunction, inspect associated wiring and combustion components, and follow the manufacturer’s instructions for replacement and operational checks.

An ignition failure or heater error message alone does not confirm blower failure. Proper diagnosis helps determine whether this kit addresses the actual problem.

Warranty

Pentair’s current warranty policy lists one year of coverage for purchased replacement parts. Online purchases receive parts-only coverage, subject to the manufacturer’s terms and exclusions. Retain the purchase receipt and installation documentation for warranty consideration.

Customer-Facing Q&A

Q: Will this fit a 400K propane heater?
A: No. This kit is specified for natural-gas configurations. Confirm the appropriate propane replacement through the heater’s parts diagram.

Q: Does this include a complete burner system?
A: No. It supplies the blower assembly and identified adapter; other burner-system components are separate parts.

Q: Is the blower adapter included?
A: Yes. Pentair specifies that a single-voltage blower adapter is included.

Q: Can a homeowner install this kit?
A: Pentair requires heater service to be performed by qualified personnel. Arrange installation with a professional experienced in gas pool heaters.