Pentair MasterTemp ASME Pool Heater 460776 – 400K BTU Propane, High-Performance & Energy-Efficient Heating
Couldn't load pickup availability
Got questions?
Feel free to get in touch
The Pentair MasterTemp ASME Pool Heater 460776 is a high-performance propane pool heater engineered for environments that require powerful, dependable heating with ASME-certified construction. With a robust 400,000 BTU output, this heater delivers rapid warm-up times, optimized heat transfer, and consistent temperature control—even under heavy use or challenging conditions.
Featuring a high-efficiency heat exchanger, advanced ignition system, and rugged, corrosion-resistant housing, the MasterTemp ASME 460776 is designed to provide long-lasting service life and energy-efficient operation. Its commercial-grade build and safety certification make it a solid choice for large residential pools as well as commercial or institutional installations.
Pentair MasterTemp ASME Pool Heater 460776 Compatibility
-
ASME-certified for commercial and high-demand residential pool heating applications
-
Designed for propane gas fuel systems with correct regulators and supply
-
Works with standard 2” pool plumbing connections
-
Compatible with Pentair automation systems such as IntelliCenter®, EasyTouch®, and IntelliTouch®
-
Ideal replacement for other 400K BTU ASME-rated pool heaters
-
Integrates with variable-speed pumps, modern filters, and advanced control systems
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 460776. Quote 460776 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.