By Pentair Pool Products



Model # EC-462029

Warranty Ecommerce (EC) products: Products purchased from an Authorized Pentair Online Reseller (products beginning with EC-) receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty.

Manufacturer Code 460737

Alternate Part #'s 460737, EC462029, PENEC-462029, PENEC462029

Product Description

The MasterTemp High Performance Heaters offer all the efficiency, convenience, and reliability features you want in a pool heater, plus a lot more. As easy to use as your home heating system, plus, user-friendly indicator lights and troubleshoot icons makes system operations and monitoring a snap. The compact design and super-quiet operation won't intrude on your poolside leisure time. 


  • Superior “Best-in-Class” energy-efficiency
  • Rotating digital display allows for easy viewing, rotate to 3 positions so there’s no need to reverse the header, simplifying installation
  • Quick-change orifice allows easy conversion of gas sources
  • Compact design (21" L x 21" W x 28" H) is easy to retrofit, no matter what the space challenges
  • Tough, rustproof exterior handles the heat and weathers the elements
  • Built-in carrying handles for easy transport
  • Certified for outdoor and indoor installation
  • Certified for Low NOx emissions

Standard copper heat exchanger 84% efficient. Heavy-duty (HD) cupro-nickel heat exchanger 82% efficient.

Product Specifications

400,000 BTU
0-9,000 ft.
Heat Exchanger:
Low NOx
Heater Type:

?     Asked on 1/16/2012by Guest

Will a gas heater operate at the low speed of a dual speed motor?

A  Answered on 1/16/2012 by InyoPools Product Specialist Patrick P.

Probably not - Most gas heater will shut off at low GPM levels (20-40) to keep the heater cores from overheating - 20 for 200 BTUs, 40 for 400 BTUs. Depending on your pool system you might get these GPM levels at the low speed but generally these heaters must be run at the motor's high speed.

?     Asked on 5/12/2012by Guest

What is the efficiency rating of this unit?

A  Answered on 5/12/2012 by InyoPools Product Specialist Patrick P.

The efficiency rating of this unit is 84.5%

?     Asked on 1/6/2015by Guest

What is the elevation rating for the Pentair MasterTemp heater?

A  Answered on 1/6/2015 by InyoPools Product Specialist Robert M.

This heater will work up to an elevation of 8,000 feet.

?     Asked on 5/8/2016by Steve

Are the Master Temp heaters okay for use with salt water pools?

A  Answered on 5/10/2016 by InyoPools Product Specialist Andy O.

Steve- For a salt water pool I highly recommend a Heavy Duty model with Cupro-Nickel. The only one they offer is Natrual Gas Max-E-Therm Heater 400000 BTU Heavy Duty w/ Cupro Nickel NG Ele. Ign. SR400HD.

?     Asked on 9/28/2016by Roberto G Wantland

I have Purex Triton Max Model 400 heater for my pool, I can not find such model and I have a problem, when I turn on the heater from my pad inside the house the heater comes on for a few seconds and turns off keeps coming on and off, what could be the problem? can you refer me to a site where I can get some info. Thanks, Roberto G. Wantland

A  Answered on 9/29/2016 by InyoPools Product Specialist Andy O.

Hello Roberto- This could be a much bigger technical issue you are having.  I would suggest calling Pentair at 1-800-831-7133.


Review Summary

 (Average 5  out of 5 stars)
5 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Helpful Review

The Most Recent Reviews