The Pentair MasterTemp 125 (part number 461058) is a 125,000 BTU natural gas heater for residential pools and spas, built around pre-mixed gas combustion with approximately 82% thermal efficiency. It connects to 1-1/2" plumbing, making it a practical replacement for an aging or undersized heater on smaller pools.
Key Features
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125,000 BTU output: Sized for residential pools and pool/spa combinations up to about 15,000 gallons.
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High efficiency: Pre-mixed combustion delivers approximately 82% thermal efficiency.
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1-1/2" plumbing: Fits standard residential pipe runs and simplifies retrofits.
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Digital controls: Digital display for programming, diagnostics and monitoring.
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Low NOx and corrosion resistant: Low-NOx certified with a corrosion-resistant enclosure.
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Dual voltage: Wires for 120V or 240V AC to match your equipment pad.
Specifications
| Brand |
Pentair |
| Part Number |
461058 |
| Product Line |
MasterTemp |
| BTU |
125,000 |
| Fuel Type |
Natural Gas |
| Thermal Efficiency |
Approx. 82% |
| Voltage |
120/240V AC |
| Plumbing Size |
1-1/2" |
| Pool Size |
Up to approx. 15,000 gallons |
Before You Order
Confirm your gas supply is natural gas, your plumbing is 1-1/2", and that venting, clearances and gas line sizing meet local codes. Routine care includes verifying gas supply and water flow and checking the display diagnostics. Questions? Call 855-677-7796 or contact us with your model and part number.
Shipping Box Dimensions
23 x 36 x 25 in
Dimensions refer to the shipping carton.
