Quick Overview
The affordable MasterTemp 125 heater gives you energy savings and advanced operating features that were previously only available from much larger heaters. With its revolutionary pre-mixed gas combustion technology, it offers 82% thermal efficiency" the highest of any heater in its category.
- Get Installation Quote
- Installation
- Size Chart
Toronto Pool Services
Pool Equipment installation services are provided by our partner, Toronto Pool Services.
All installations are performed by certified technicians and are backed by a one-year labour warranty. By submitting this form you will share your information with our partner and they will provide you with a quote by email. You are under no obligation to purchase the product or the installation service. Product prices on torontopoolsupplies.ca do not include installation costs.
Sizing your Heater
| Pool Size w/ 6 ft. Avg. Depth | Volume, Gallons | Volume, Liters | Gas Heater BTU |
| 12' x 24' | 12,960 | 49,000 | 100k - 150k BTU |
| 14' x 28' | 17,640 | 66,800 | 150k - 200k BTU |
| 16' x 32' | 23,040 | 87,200 | 200k - 250k BTU |
| 18' x 36' | 29,160 | 110,400 | 250k - 300k BTU |
| 20' x 40' | 36,000 | 136,300 | 300k - 400k BTU |
| 15' Round | 7,950 | 30,100 | ~100k BTU |
| 18' Round | 9,050 | 34,250 | ~100k BTU |
| 21' Round | 15,580 | 59,000 | 100k - 150k BTU |
| 24' Round | 20,350 | 77,000 | 150k - 200k BTU |
Note: all figures are approximate and are meant to be used as a guideline only. Heater performance may vary depending on weather conditions - wind, shade, etc. For sizing solar and electrical heaters, refer to each individual heater's documentation.
Pentair 461059 Mastertemp 125k BTU NG Above Ground Pool Heater
There are many aboveground pool heaters on the market that claim to provide what you need to enjoy a warm pool all summer long, but buyers should beware! With the rise of low-quality temporary pool setups, many manufacturers have begun to try to market their cheap and ineffective heaters to aboveground pool owners. A pool heater that is not built to the quality that a pool requires will not function correctly, and can be very expensive to operate.
Why choose the Pentair Aboveground Pool Heater?
The Pentair aboveground pool heater provides quality heating for aboveground pools. With the MasterTemp 125k BTU, you have access to the quality, technology and design of some of the most powerful and reliable pool heaters in the world, at just a fraction of the cost. This Pentair aboveground pool heater is also powerful enough to add heat to your spa!
Pool owners love the rotating display that provides all the information you need to check the status of your pool and prepare for maintenance. Anyone who is short on space will love the compact design of the MasterTemp - one of the easiest to fit into an aboveground pool assembly.
The Pentair MasterTemp aboveground pool heater can easily maintain your preferred temperature for swimming, or be kicked on during cold parts of the season for some quick warmth for your family.
Efficient, Reliable Heating
If you're considering a new heater for your aboveground pool, be sure you're aware of your options! Many pool heaters on sale today provide a low up-front cost, but won't even last a season. With the Pentair MasterTemp aboveground pool heater, you have access to the reliability and technology of some of the world's best pool heaters - all at a price that fits a budget.
FEATURES
- 82% energy efficiency is highest in its class
- High-performance, affordable heating with premium features
- 1-1/2" plumbing - ideal for smaller bodies of water up to 15,000 gallons
- Pre-mixed combustion technology for ultra-fast heat-up
- Rotating digital display - the first in its price category - provides fast, easy access for programming and monitoring
- Certified for low NOx emissions
- Certified for outdoor and indoor- vented installations
- 5' foot/ 3 Prong/ 120V Plug
Manufacturer Warranty: 2 Year
- Pentair
NOTE: Product images are for illustration purposes only and may not exactly match the actual product due to seasonal model, color or design changes. When shopping for parts we strongly recommend to check the SKU or "Part Number" which is listed on each product page. If you are unsure whether this is the correct product or need assistance please contact us.
Just a quick reminder - Toronto Pool Supplies is an online-only store. Our Concord, ON location is a pickup point, not a retail store and we cannot service walk-in customers. If you want to pick up your items in person please place an order online first and we will email you when it's available for pickup.
Hours: Mon-Wed: 9AM-6PM / Thu: 9AM-8PM (Extended) / Fri: 9AM-6PM