Pentair MasterTemp 400 High-Performance Heater

4.7 / 5
Pool Supply Experts Score

Product Highlights

The Pentair MasterTemp 400 Natural Gas 400K BTU High Performance Pool and Spa Heater provides dependable, reliable, and efficient heating for your pool and spa.

  • Built to last with tough rust proof exterior
  • Premix combustion technology for fast and efficient warm-ups
  • Built in safety features to ensure system protection
  • Rotatable, easy-to-use, intuitive operation controls
  • Certified for outdoor and indoor installation
  • Best-in-class energy efficiency
  • Eco-friendly, certified for low NOx emissions and outperforms industry standard
  • Quiet operation creates for a peaceful poolside experience
  • Compact design to fit in smaller, less intrusive equipment pads
  • Compatible with pool and spa automation systems
Manufacturer: Pentair
Categories: Pool Heater

Pros & Cons

What We Like...

  • Efficient Heater
  • Easy Installation

What Needs Improvement...

  • Can Increase Gas Bill

Product Summary


Save money and energy with the Pentair MasterTemp 400 High-Performance Heater. Already known as being dependable and efficient, MasterTemp now offers smart features and an optional energy-saving Smart Bypass Valve Kit to help you ensure your pool is ready whenever you are.

  • Smart connectivity via the Pentair Automation Systems enable you to manage pool functions anytime, anywhere.
  • Full-text digital display combines new functions and a user-friendly menu for easy operation and diagnostics.
  • Digital connectivity with your pool’s automation system and an advanced ignition control module with flame strength sensor help to ensure optimal heater performance.
  • Alerts pushed to a smart device to keep you updated on heater performance and real-time status.
  • Optional Smart Heater Bypass valve control diverts water flow when the heater isn’t needed to help save up to 35% in yearly operational costs.*
Pool Supply Experts Score