MasterTemp 250K LP High Performance Pool and Spa Heater - 460733



Part # EC-462027

By Pentair Pool Products

  5 Average  



Part # EC-462027

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 460733

Alternate Part #'s 460733, EC462027, EC462028, PENEC-462027, PUR-15-2011

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

250,000 BTU
0-9,000 ft.
Heat Exchanger:
Special Feature:
Low NOx Emission

?     Asked on 11/12/2020 by GARY SANDLER

Can you recommend a company to install your Pentair Ultra Temp Heat Pump if shipped to Miami?

A  Answered on 11/13/2020 by InyoPools Product Specialist Hector F.

Hi Gary, for the installation of heat pumps and heaters we recommend any CPC(certified pool contractor). 

?     Asked on 5/13/2020 by Torri

My cover cracked from a tree falling on it in a you sell replacement covers..heater still works

A  Answered on 1/5/2021 by InyoPools Product Specialist Hector F.

Hi Torri, the Pentair Mastertemp cover part number is 6291-970

?     Asked on 9/9/2019 by Dan Stephenson

is this heater a 50 cycle as I plan to use it in the Islands. MasterTemp Heater 250,000 BTU - LP w/ Electric Ignition Low NOx Propane gas

A  Answered on 9/10/2019 by Industry Professional

This heater is not a 50 cycle unit. We only carry them in 60 hz.

?     Asked on 3/5/2019 by Chet Pigott

Good afternoon. I had a quote to replace the heater for my spa. The quote given was for the 400,000 BTU unit. Do you feel it is necessary to use that unit or could a smaller one work? My pool also has a working solar unit.

A  Answered on 3/5/2019 by InyoPools Product Specialist Michelle B.

Hello, How many gallons would be in your spa? Is this also going to be connected to the pool as well?

?     Asked on 2/7/2019 by Julie

Do you guys have a conversion kit to go from Propane to natural gas for this heater?

A  Answered on 2/7/2019 by InyoPools Product Specialist Lennox H.

Hi, Julie. The propane to natural gas conversion kit for this unit is Part # 460742

?     Asked on 8/20/2018 by Brian

Can you run this with a grill size propain tank? If so how long would it last and about how much does it use in an hours time. Is the heater temp adjustable? Brian

A  Answered on 8/24/2018 by InyoPools Product Specialist Lennox H.

Hi, Brian. This unit will not be able to operate using a size propane tank. This unit requires 2.5 gallons of propane an hour to operate. The thermostat is adjustable. 

?     Asked on 4/8/2017 by Allen Cazier

Heater comes on, but doesn't stay on. What' up?

A  Answered on 4/10/2017 by InyoPools Product Specialist Scott W.

It sounds like the orifices, but I recommend calling Pentair to confirm that.

?     Asked on 8/29/2016 by

Was there a recall on a part for this product?

A  Answered on 8/30/2016 by InyoPools Product Specialist Alan M.

We are unaware of any recall parts on this heating unit. You may want to contact the manufacturer, Pentair, at 1-800-831-7133. They will be able to better answer your question.

?     Asked on 5/20/2016 by Brian


A  Answered on 5/25/2016 by InyoPools Product Specialist Lennox H.

Hi Brian, The Hot Surface Igniter (77707-0054) is what ignites the gas fumes. Click the link >Hot Surface Igniter (77707-0054) to view image.

?     Asked on 1/6/2015 by 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 1/16/2012 by 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.


Review Summary

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