Pentair 461021 MasterTemp Natural Gas Heater - 400,000 BTU, ASME

What This Part Is Used For
The Pentair 461021 MasterTemp Natural Gas Heater - 400,000 BTU, ASME is designed to heat large pools and spas efficiently. It connects to natural gas and complies with ASME standards.

Why This Part Matters
High-output heating reduces downtime between swim sessions. ASME certification supports code compliance in commercial installations. Proper heating equipment prevents inconsistent water temperature and system strain.

Key Features and Specifications

• Manufacturer part number: 461021
• MasterTemp natural gas heater
• 400,000 BTU capacity
• ASME certified model
• For commercial or large residential pools

Installation and Fitment Guidance
Ensure correct gas pressure and venting clearances. Professional installation is recommended for safety and compliance. Confirm by manufacturer part number before ordering.

About the Pentair Brand
Pentair manufactures heating systems for residential and commercial pools. Their ASME models meet stricter regulatory standards. Pentair supports long-term serviceability with OEM components. The brand is widely recognized in the pool industry.

Common Service Context
Installed during commercial pool construction or major equipment upgrades. Frequently selected to replace aging high-capacity heaters.