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PENTAIR MASTERTEMP 461058 LOW NOX NATURAL GAS POOL & SPA HEATER – 125K BTU, COPPER HEAT EXCHANGER
Heating Capacity: 125,000 BTU
Thermal Efficiency: 82%
Fuel Type: Natural Gas
Ignition: Electronic
Weight: 100 lbs
Emissions: Certified Low NOx
Display: Rotating Digital
Power Cord: Not Included
The Pentair 461058 MasterTemp 125 Natural Gas Pool & Spa Heater delivers 125,000 BTU at 82% thermal efficiency in the smallest and lightest cabinet in the MasterTemp line - just 100 lbs.
The 125,000 BTU size exists for spas, hot tubs, plunge pools, and above-ground pools where a 200K to 400K unit is far too much heater. Oversizing causes short-cycling, which burns fuel and wears components; matching output to a small body of water is the cheaper long-term choice.
The compact cabinet weighs a third less than a full-size MasterTemp, making it practical for tight equipment spaces. A rotating digital display can face whichever direction the unit is installed, indicator lights show operating status at a glance, and a built-in manual gas shutoff simplifies service. This version ships without a power cord for hard-wired installations.
Key Features
- 125,000 BTU heating capacity
- 82% thermal efficiency
- Natural Gas
- Electronic ignition
- Lightest MasterTemp at 100 lbs
- Sized for spas, hot tubs, plunge pools, and above-ground pools
- Certified low NOx emissions
- Rotating digital display for any installation orientation
- Indicator lights for at-a-glance operation monitoring
- Built-in manual gas shutoff for service
- Compact, quiet design
- Rustproof exterior construction
- Supplied without power cord for hard-wired installation
Specifications
| Specification | Details |
| Brand | Pentair |
| Part Number | 461058 |
| Series | MasterTemp 125 |
| Fuel Type | Natural Gas |
| BTU Input | 125,000 BTU |
| Thermal Efficiency | 82% |
| Ignition | Electronic |
| Weight | 100 lbs |
| Emissions | Certified Low NOx |
| Display | Rotating Digital |
| Gas Shutoff | Manual, Built In |
| Exterior | Rustproof |
| Power Cord | Not Included |
What's Included
- Pentair 461058 MasterTemp 125 Natural Gas Pool & Spa Heater
- Heat exchanger assembly
- Rotating digital display control
- Installation and operation documentation
The Pentair 461058 MasterTemp 125 is the right-sized MasterTemp for spas and small pools - 125,000 BTU in the lightest, most compact cabinet Pentair offers.
Learn more at Pentair:
https://www.pentair.com/en-us/pool-spa/products/heaters-heat-pumps/mastertemp-125-high-performance-heater/sku/461058.html
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