Pentair MasterTemp 400 High-Performance Pool & Spa Heater – Propane (LP) | EC-462029

Pentair MasterTemp 400 High-Performance Pool & Spa Heater (Propane)

Powerful 400,000 BTU propane heater with low-NOₓ emissions, SKU EC-462029.

Features

• 400,000 BTU/hr capacity — ideal for large or high-demand pools.
• Low-NOₓ certified to meet air-quality standards.
• Rotating digital LCD interface — easy to read from three angles.
• Hot-surface electronic ignition — no standing pilot required.
• Compact footprint (about 21″ × 21″ × 28″) — fits tight equipment pads.
• Rugged, weather-resistant composite casing for durability.
• Rated for elevations up to ~9,000 ft.

Description

The Pentair MasterTemp 400 (EC-462029) propane heater offers high-output heating with a low environmental impact. It delivers 400,000 BTU/hr using a pre-mixed gas-air system, enabling fast warm-up with strong efficiency. The unit features a rotating digital LCD controller that lets you monitor temperature, diagnostics, and alerts from multiple angles, while its hot-surface ignition ensures fast, reliable startup. Built into a rust-proof composite shell, the heater is suitable for both indoor and outdoor placement. Its compact design helps conserve space, and it supports installation at elevations up to 9,000 feet.

Pro Tip

Pair this heater with a Smart Bypass Valve Kit to divert water during mild weather — this saves propane and reduces wear on the unit.

Related Parts

• Pentair MasterTemp 125 High-Performance Pool & Spa Heater – Propane (LP) | EC-462025
• Pentair MasterTemp 250 High-Performance Pool & Spa Heater – Propane (LP) | EC-462027
• Pentair INTAKE AIR KIT | 461031
• Gas Conversion Kit Natural Gas to Propane | 77707-1441

Installation Tips

Must be installed by a qualified, licensed technician. Use proper propane-line sizing and provide adequate venting per Pentair’s manual. Requires a 120/240 VAC power supply. Follow all safety precautions in the Owner’s Guide.

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