Product Overview

The Pentair MasterTemp 250 Natural Gas Heater 460732 is a high-performance pool and spa heater built for fast, efficient, and reliable residential heating. With 250,000 BTUs of heating power, natural gas operation, and 120/240 VAC electrical capability, this heater is a strong choice for medium-to-large residential pools, spas, and pool/spa combination systems.

The MasterTemp 250 combines a compact cabinet, digital controls, low NOx performance, and quiet operation, making it one of Pentair’s most popular gas heater options for homeowners who want dependable heat without taking up excessive equipment pad space.

Ideal For

Medium-to-large residential pools

Pool and spa combination systems

Natural gas pool heating applications

Homeowners upgrading from an older gas heater

Equipment pads with limited space

Customers wanting faster heat-up than a 200K BTU heater

Residential pool systems needing a 250K BTU heater

Key Features

250,000 BTU natural gas heating performance

120/240 VAC electrical capability

Compact MasterTemp cabinet design

Digital control panel for simple temperature adjustment

Hot-surface ignition with no standing pilot

Low NOx certified heater design

Quiet operation for residential equipment pads

Rust-resistant composite exterior

Manual gas shutoff for service access

Designed for fast pool and spa water warm-up

Benefits

The Pentair MasterTemp 250 gives pool owners a strong balance of heating power, efficiency, and compact design. Its 250K BTU rating provides faster heat-up than smaller heater models while still fitting into many residential equipment pad layouts.

The digital control panel makes operation simple, while the low NOx design helps meet modern emissions standards in many areas. The composite cabinet helps protect the heater from outdoor conditions, and the compact footprint makes it easier to install or replace older heaters in tight spaces.

Specifications

Compatibility & Ordering Notes

Confirm this is the correct natural gas model before ordering.

Verify that 250,000 BTUs is properly sized for your pool or spa.

Confirm gas line size, gas supply, electrical requirements, plumbing layout, venting requirements, equipment pad clearances, and local code requirements before installation.

This model is not for propane systems. For propane applications, use the correct propane MasterTemp model.

Professional installation is strongly recommended.

Installed or used heaters may not be eligible for return.

Customer-Facing Q&A

Q: Is Pentair 460732 natural gas or propane?
A: Pentair 460732 is the natural gas version of the MasterTemp 250 heater.

Q: How many BTUs is this heater?
A: This heater is rated at 250,000 BTUs.

Q: Can this heater run on 120V or 240V?
A: Yes. This model is designed for 120/240 VAC single-phase operation.

Q: What is the barcode for Pentair 460732?
A: The barcode is 788379724443.

Q: Does this heater use a standing pilot light?
A: No. The MasterTemp 250 uses hot-surface ignition and does not require a standing pilot.

Q: Is this heater good for large pools?
A: The 250K BTU size is a good fit for many medium-to-large residential pools and pool/spa systems. Very large pools or customers wanting the fastest heat-up may need a larger BTU heater.

Q: Is professional installation recommended?
A: Yes. Gas pool heaters should be installed by a qualified professional to ensure proper gas, electrical, plumbing, venting, and safety setup.

Q: What should I verify before ordering?
A: Confirm fuel type, BTU sizing, gas line size, electrical requirements, plumbing compatibility, installation clearances, venting requirements, and local code requirements.