Pentair MasterTemp 460737 Propane Pool Heater – 400,000 BTU High-Performance Heating, 120/240V
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The Pentair MasterTemp 460737 Propane Pool Heater delivers 400,000 BTU of robust heating power and dependable performance for residential pool owners who demand quick warm-ups, energy efficiency, and long-term reliability. Fueled by propane gas and operating on 120/240V power, this heater combines high-capacity output with a compact footprint, quiet performance, and easy installation.
With an efficient heat exchanger and digital temperature controls, the MasterTemp 460737 provides consistent, comfortable water temperature for extended swim seasons. Built with rugged composite materials, corrosion resistance, and industry-trusted safety features, this heater is ideal for pools that require powerful heating without sacrificing ease of use or durability.
Pentair MasterTemp 460737 Propane Pool Heater Compatibility
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Designed for propane fuel systems with standard propane hookups.
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Works with 2” pool plumbing connections in most residential installations.
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Compatible with Pentair and many third-party pool automation controls (IntelliCenter®, EasyTouch®, IntelliTouch®).
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Suitable as a replacement for Max-E-Therm®, MasterTemp®, and similar 400K BTU propane heaters.
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Integrates with variable-speed pump and modern filtration setups.
- Pentair 460737
- Pentair MasterTemp
- Pentair MasterTemp 460737
- MasterTemp 400K
- 400000 BTU Pool Heater
- Propane Pool Heater
- LP Gas Pool Heater
- Pool & Spa Heater
- Pentair Pool Heater
- High Efficiency 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 460737. Quote 460737 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.