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MasterTemp 400K BTU Heavy Duty Natural Gas Heater

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Pentair 460805 MasterTemp 400K BTU Heavy Duty Natural Gas Heater

Item #: 460805 by PENTAIR WATER POOL AND SPA INC

UPC #: 788379745479

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Features
  • Heats up fast so no long waits before enjoying your pool or spa
  • Best in class energy efficiency
  • Manual gas shut-off when service is required
  • Eco-friendly MasterTemp® is certified for low NOx emission and outperforms industry standards
  • Rotating digital display allows for easy viewing
  • Tough, rustproof exterior handles the heat and weathers the elements
  • 2-year limited warranty

VoltageRating

120/240 VAC

Brand

Pentair

SubBrand

MasterTemp®

StandardsApprovals

CSA-Flame Certified, CSA-Star Certified, Eco-Select

CabinetDepth

32.61 Inch

GasType

Natural Gas

Phase

1-Phase

CabinetWidth

23.02 Inch

ControlType

Digital

Department

HEATERS

BTUHInput

400000

FlowRate

120 gpm

Type

High Performance, Heavy-Duty

FrequencyRating

60 Hz

Item

Low NOx Pool and Spa Heater

Shipping Dimensions

36.00x30.00x22.50

TubingMaterial

Cupro-Nickel

WaterConnection

2 Inch

GasConnection

3/4 Inch

CabinetHeight

28.15 Inch

Voltage

120V,240V

Application

Indoor,Outdoor,Pool,Spa

Product Weight

136 pound

Fuel Type

Natural gas

Product Height

21 inch

Product Width

23 inch

Control Type

Digital

P65 Warning

The following product(s) can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov

Product Depth

28.2 inch

Tubing Material

Cupro Nickel

Cabinet Depth

32.61 inch

Cabinet Height

28.15 inch

Cabinet Width

23.02 inch

Commercial, Residential, or Professional

Residential

Each Product Weight

136 pound

Gas Connection

0.75 inch

Green or Energy Efficient Product

True

Minimum Sell Quantity

1

BTU Input

400000 British thermal unit

Frequency Rating (Hz)

60

Flow Rate Min

120 gal/min

Standards Approvals

CSA Certified

Flow Rate Max

120 gal/min

Gas Type

Natural

BTUs

400,000

Commercial or Residential

Residential

BTU

400 < 500

Pool Type

In-Ground

Header Material

Polymer

Exchanger Material

Cupronickel

Product Overview
Heavy-duty natural gas heater with 400,000 BTU output, designed for rapid, efficient heating of large pools and spas up to 40,000 gallons. Features a cupro-nickel exchanger for durability, digital controls, and quiet operation, built tough for harsh conditions with low NOx emissions and reliable performance.Cupro-Nickel Heat Exchanger: Resists corrosion from salt and low pH, delivers 400,000 BTUs, per Pentair specs.Low NOx Emissions: Certified eco-friendly, exceeds standards with efficient pre-mixed combustion.Digital Display: Shows temp and diagnostics via full-text LCD, simplifies operation and monitoring.Quiet Operation: Runs smoothly with pre-mixed burner tech, measures 21" W x 28" H x 21" D.Heavy Duty Design: Built with rust-proof exterior for tough environments, weighs 140 lbs.Fast Heat-Up: Achieves 82% thermal efficiency, requires 2" plumbing, 120/240V, 5A power.