Pentair MasterTemp 250 HD ASME Natural Gas Pool and Spa Heater | 461020

Pentair | SKU: 461020 | Barcode: 788379858261

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Product FAQs

Which fuel and input rating is this model?

Part 461020 is the natural gas MasterTemp 250 HD ASME, rated at 250,000 BTU/hr input. Input is fuel consumed at the rated condition, not useful heat output or a guaranteed heat-up time.

Will it directly replace another MasterTemp?

Check the full rating plate, gas type, plumbing alignment, electrical circuit, venting and site clearances. Shared branding or a matching BTU figure does not establish a direct replacement.

Does it include standalone Wi-Fi control?

Do not assume standalone Wi-Fi. Remote operation depends on the installed control generation and compatible automation/network equipment. Have the installer match the exact heater instructions.

Who should install and service it?

Installation and service require a qualified pool-heater professional following the complete manufacturer instructions. Improper work can cause fire, explosion, electric shock or carbon-monoxide exposure. Never bypass a safety switch.

What warranty applies?

Warranty coverage depends on the exact model, purchase channel and installation. Review Pentair’s current warranty conditions and confirm the terms for your purchase; do not assume that dealer-channel or bundle coverage applies to an online order.

Call (602) 274-7946

Where to Buy

Resources & PDF Downloads

MasterTemp Installation and User’s Guide - Match Model and Revision

Pentair Heater Ordering Catalog - Exact Model Table

Description

Pentair | 461020

MasterTemp 250 HD ASME: match the fuel and configuration

Pentair 461020 is the natural gas MasterTemp 250 HD ASME pool and spa heater, rated at 250,000 BTU/hr fuel input. The HD configuration has a cupro-nickel heat exchanger.

Exact fuel selection

Natural Gas configuration. Match the gas supply to the heater rating plate.

Configuration matters

ASME-rated model; keep its parts and pressure requirements distinct from non-ASME heaters.

Plan the installation

Gas heating still requires electrical power, suitable water flow and a correctly designed combustion-air and vent system.

Check before ordering

Have a qualified installer verify available gas capacity, electrical supply, water flow, combustion air, venting and service clearances. Installation labor, site-specific venting and automation are separate. Confirm the supplied control generation before relying on smart-automation features.

See Specifications, Resources & PDF Downloads and Product FAQs for details.

Specifications

SKU

461020
UPC or GTIN

788379858261
Product Type

Gas Pool and Spa Heater
Size/Connection

250,000 BTU/hr input; Natural Gas; MasterTemp 250; HD ASME; 2-inch water unions; 3/4-inch gas connection; 120/240 VAC electrical supply, configured per manual; Catalog heat-exchanger efficiency: 82%
Materials

Cupro-nickel heat exchanger
Power Source

Natural gas

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