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Pentair MasterTemp 125,000 BTU Low NOx Natural Gas Swimming Pool Heater
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Pentair MasterTemp 125,000 BTU Low NOx Natural Gas Swimming Pool Heater

Sku: EC462024
$1,799.00 $2,116.99 You save 15%
  • This product ships for FREE*!
  • Easy returns
  • Ships from Ontario, Canada
In Stock
  • Description
  • Warranty
  • Manuals & Attachments
  • Reviews (19)

Detailed Product Description

Product Name:
Pentair MasterTemp 125,000 BTU Low NOx Natural Gas Swimming Pool Heater
Product Code:
Maximum Altitude:
10,000 FT
BTU Rating:
125,000 BTUs
Heater Type:
Natural Gas
1.5 Inch PVC
Voltage (if required):
120 volt 5ft. 3 Prong Plug or 120/240 Hard wire
Heater Dimensions:
36" x 22" x 24"
1 Year

High Efficiency, Leading Technology - Designed for Pool and Spas up to 15,000 Gallons in Size

The incredibly affordable MasterTemp 125,000 BTU heater offers both the energy savings and advanced operating features, including those typically found only on more expensive units! Using unique pre-mixed gas combustion technology, this MasterTemp heater offers 82% thermal efficiency - the highest of any heater in its category. With 1 1/2" plumbing and an included 120V cord for easy power, this compact heater is ideal for smaller applications such as aboveground pools, hot tub and spas, and inground pools up to 15,000 gallons in size. The MasterTemp 125,000 BTU heater also offers the first ever rotating, digital display in its class, providing valuable information at the touch of a button to the user. To use with propane fuel, you must purchase part number 461063 to convert the natural gas connection to accept propane.


  • Best-in-class 82% energy efficiency rating
  • Pre-mixed combustion technology for ultra-fast heat-up
  • Certified eco-friendly, low NOx emission operation that outperforms industry standards
  • Easy-to-use, rotating digital display for programming and monitoring
  • A tough, rustproof exterior that handles heat and the elements
  • 240V electrical connections for operation
  • 1 1/2" PVC union connectors
  • 120V ready with 3 prong plug (240V capable)

Product Includes a 1 Year Manufacturer's Warranty (proof of installation by a licensed technician is required for valid warranty coverage).

Warranty Coverage: At the manufacturer's discretion. Limited warranty covers replacement parts ONLY if the heater is installed with a pool or spa. The Applicable Warranty Period is one (1) year from the Purchase Date or 90 Days on the Heating Element. The warranty does not cover damage caused by improper water chemistry. The warranty will be void if the heater is not installed by a licensed technician, or the heater has been installed on a soft sided pool. Please see product manual for specific warranty details.

Start a Warranty Claim:To begin a claim please email the model number, serial number, photo/video of the issue, and a detailed description of the issue the heater is experiencing to

Warranty Information

Manufacturer Warranty: Refer to the product description for manufacturer warranty details and conditions.

Extended Warranty Details*: Pool Supplies Canada extended warranty applies to part-only replacement during the extended warranty period.

* Note: extended warranty coverage does not begin until after the included manufacturer warranty term has ended.

Customer Reviews

Review by Justin K on July 9, 2022

Verified Review

Love it heats the pool in no time

Review by Stephen H on September 8, 2021

Verified Review

Review by Roxanne R on August 28, 2021

Verified Review

Insane! Ordered the unit at noon one day and less than two days later the unit arrived at my doorstep. This is the second major appliance (previously a pool pump) that arrived quicker than expected. Fantastic customer service. They have my loyalty.

Review by BRIAN M on July 29, 2021

I ran this heater to raise my pool from 40F to 85F and was not looking forward to my gas bill. I was blown away at how little gas this heater used to do the job. VERY good efficiency and great heater!

Review by Paul B on July 15, 2021

Verified Review

Arrived quickly. I installed this on my new 12x24 oval AGP from and it puts out a lot of heat. Love this heater and am looking forward to enjoying the extended season!

Review by Ken N on July 4, 2021

Verified Review

Quality product

Review by Chris L on June 27, 2021

Verified Review

Review by Shanon D on June 22, 2021

Verified Review

Easy to set up and heats pool super fast.

Review by Neal R on June 18, 2021

Verified Review

Very easy to use, quiet and pumps out the heat. It was nice that it was ready to plug into 120V straight out of the box. It heats our little 12ft 10000L pool at about 6F per hour.

Review by Kyle on May 20, 2021

Verified Review

Great Product, No problems so far. Extended the swimming season by at least 3 weeks. Looking forward to using it again next year.

Review by ANDRE L on November 24, 2020

Verified Review

Used the unit for Sep through half October to heat 13000 Litre pool at 100 degrees. Fires up well. Heats quickly. A little noisier than expected but not annoyingly so. So far, great value.

Review by Mark C on November 21, 2020

Verified Review

We love this heater! It works great and heats our little 12ft pool about 1 degree every 10 to 15 min, great when we have friends over. The heater is oversized for our pool but we bought it knowing we'd be upsizing our pool in a couple years.

Review by Leah L on September 20, 2020

Verified Review

East to install, works great.

Review by RODNEY H on September 8, 2020

Verified Review

Easy to set up and use.

Review by Gabrielle B on June 16, 2020

Verified Review

Absolutely impressed. Super easy install. Heats 15000 L 70 to 85 in a about three hours at 18C ambient temp. Can’t believe how much heat it puts out.

Review by John E on June 9, 2020

Love it! 5 stars. Heated my pool from 57 to my pre set of 84 in under 24hoirz.

Review by Heidi B on June 4, 2020

Verified Review

This unit is fantastic. Very well designed and built. Brought my 29,000 liter pool from 62 F to 80 F in under 12 hours. Maybe much faster as I not around to check when it hit temp. Love it.

Review by Tim B on June 16, 2019

This is a great little heater. Very quiet and pumps out lots of heat.

Review by Dale Hayward on January 29, 2019

Verified Review

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Pentair MasterTemp 125,000 BTU Low NOx Natural Gas Swimming Pool Heater $1,799.00

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