Product Overview

The Pentair MasterTemp® 400 High Performance Pool & Spa Heater (Model EC-462029) delivers powerful, efficient, and reliable heating for residential and commercial pools. With an impressive 400,000 BTUs of output, this propane-powered heater provides fast heat-up times, allowing you to enjoy warm water on demand, even for large pools and spas.

Built with advanced pre-mixed gas combustion technology, the MasterTemp 400 offers exceptional energy efficiency, quiet performance, and low NOx emissions. The rotating digital display ensures easy operation and diagnostics, while the compact, corrosion-resistant design makes it durable enough for any outdoor environment. When performance and dependability matter most, Pentair’s MasterTemp 400 Propane Heater is the clear choice.

Ideal For

• In-ground pools and spas up to 40,000 gallons

• Propane-fueled pool systems in areas without natural gas access

• Homeowners seeking fast, efficient heating for large pools

• Applications requiring quiet, eco-friendly performance

Key Features

• 400,000 BTU Output: Heats large pools and spas quickly for year-round comfort.

• High-Efficiency Combustion: Maximizes heat transfer while reducing propane use and operational costs.

• Rotating Digital Display: Easy-to-read control panel allows convenient temperature setting and system diagnostics from any angle.

• Durable, Rustproof Housing: Weather-resistant composite exterior protects against corrosion and UV exposure.

• Compact Footprint: Space-saving design ideal for tight equipment pads and retrofits.

• Quiet Operation: Engineered for whisper-quiet performance without sacrificing power.

• Low NOx Certified: Meets stringent air quality and emission standards for eco-friendly heating.

• Simple Service Access: Removable panels allow quick maintenance and inspection.

Benefits

• Powerful Heating for Large Pools: Perfect for fast, efficient heating in residential or commercial applications.

• Energy & Cost Efficient: Designed for maximum fuel efficiency with minimal energy waste.

• Long-Lasting Durability: Built from premium materials to withstand harsh weather and continuous outdoor exposure.

• User-Friendly Controls: Intuitive digital interface simplifies temperature adjustments and diagnostics.

• Compact & Quiet: Small footprint and low operational noise make it ideal for backyard installations.

• Eco-Conscious Design: Low NOx emissions ensure environmentally responsible performance.

Customer Q&A

Q: What size pool can the MasterTemp 400 Propane heater handle?
A: It’s ideal for in-ground pools up to 40,000 gallons, delivering rapid, even heating.

Q: Is this heater compatible with saltwater pools?
A: Yes. Its corrosion-resistant materials make it safe for both saltwater and chlorinated pools.

Q: Does this model use electronic ignition?
A: Yes. It features automatic electronic ignition for reliable and safe operation.

Q: Can it be installed outdoors?
A: Absolutely. The rustproof, weather-resistant housing is designed specifically for outdoor environments.

Q: How energy efficient is this heater?
A: The MasterTemp 400 operates at approximately 82% thermal efficiency, offering powerful heating with lower fuel costs.

Specifications

• Model: MasterTemp 400

• Part Number: EC-462029

• BTU Output: 400,000 BTUs

• Fuel Type: Propane Gas

• Heater Type: High-Efficiency Combustion

• Efficiency: 82%

• Max Pool Size: Up to 40,000 gallons

• Dimensions: 21” (L) × 21” (W) × 23” (H)

• Weight: 136 lbs

• Emission Rating: Low NOx Certified

• Display: Rotating Digital Control Panel

• Housing: Rustproof, Weather-Resistant Composite

• Ignition Type: Electronic

• Manufacturer: Pentair