Pentair MasterTemp Pool & Spa Heater 461058 – 125K BTU Natural Gas, High-Performance Heating (No Cord)
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The Pentair MasterTemp Pool & Spa Heater 461058 is a natural gas-powered heating solution engineered to deliver 125,000 BTU of dependable warmth for residential pools and spas. Built with Pentair’s commitment to performance and reliability, this model offers fast warm-up times, energy-efficient operation, and consistent temperature control throughout the swim season.
Featuring an advanced heat exchanger, electronic ignition system, and user-friendly digital controls, the MasterTemp 461058 provides smooth, quiet performance and simplified operation. The heater’s compact footprint makes it ideal for tight equipment pad spaces or retrofit applications where space is at a premium. (Note: This model is supplied without a power cord.)
Pentair MasterTemp Pool & Spa Heater 461058 Compatibility
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Designed for natural gas pool and spa heating systems using standard residential gas connections.
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Works with 2” plumbing connections typical of most pool and spa installations.
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Compatible with Pentair automation systems including IntelliCenter®, EasyTouch®, and IntelliTouch®.
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Suitable as a direct replacement for similar 125K BTU natural gas heaters.
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Integrates with variable-speed pumps, heaters, controllers, and pool automation platforms.
Frequently asked questions
How do I size a pool heater?
Heater sizing follows pool surface area, the temperature rise you want and how exposed the pool is to wind. A larger BTU rating heats faster and cycles less; an undersized heater runs continuously and still struggles on cold nights. Gas heaters also need a gas line and meter capacity that can supply their rated input.
What is the part number for this heater component?
Pentair lists this heater component under part number 461058. Quote 461058 when you cross-reference against your equipment manual, an existing part, or a parts diagram, so you are comparing the same revision.
What routine maintenance does a pool heater need?
Keep water chemistry balanced, because low pH and high calcium hardness are the two most common causes of premature heat exchanger failure. Beyond that: keep the cabinet clear of debris, check for rodent nests before each season, and have the burner and gas train inspected periodically.
How do I confirm this fits my equipment?
Match the part number stamped on the component you are replacing, or look it up in the parts list for your Pentair equipment. If your model or serial number is not named on this page, send it to us before you order and we will confirm the fit.
Is this the complete heater or a replacement part?
Check the title and the specification section above. Heater listings and heater component listings share the same part-number format, so confirm whether you are buying a full appliance or a single serviceable component before ordering.
Is there a warranty on this heater component?
It carries the standard Pentair manufacturer warranty. The terms are set by Pentair, and on some equipment the coverage only applies when a licensed professional performs the installation. Keep the receipt and packaging until you have confirmed correct operation.