Pentair MasterTemp 300K BTU Natural Gas Pool & Spa Heater 460734 – High-Performance Heating
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The Pentair MasterTemp 460734 300K BTU Natural Gas Heater delivers powerful, fast, and energy-efficient heating for pools and spas of all sizes. Built with a compact, lightweight design, MasterTemp provides commercial-grade performance while remaining easy to install and quiet during operation. Its highly efficient heat exchanger ensures rapid warm-ups, while digital controls make temperature adjustments simple and precise. Designed for durability and ease of use, the MasterTemp 300K is a trusted, high-performance heating solution for residential pools and spas.
Compatibility
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Works with standard pool and spa plumbing systems (2” connections).
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Compatible with Pentair automation including IntelliCenter®, EasyTouch®, and IntelliTouch®.
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Suitable for inground pools and spas requiring natural gas heating.
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Can replace previous MasterTemp or Max-E-Therm heaters with minimal plumbing changes.
- Pentair 460734
- Pentair MasterTemp 460734
- MasterTemp 300K
- 300000 BTU Pool Heater
- Natural Gas Pool Heater
- Pool & Spa Heater
- Pentair Pool Heater
- Low NOx Pool Heater
- High Efficiency Pool Heater
- Digital Pool Heater
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 460734. Quote 460734 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.