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- Heats Up Fast so No Long Waits Before Enjoying your Pool or Spa while Achieving Best-In-Class Efficiency.
- High Efficiency Rating Makes these Heaters Extremely Economical to Operate.
- Rotating Digital Display Allows for Easy Viewing.
- Tough, Rust Proof Exterior Handles the Heat and Weathers the Elements.
- Improved Resistance to Rodent Intrusion
- EC-462028
Ultra-High Performance in a Compact, Quiet & Eco-Friendly Design
- Enhanced LCD display and diagnostics include easy to display and front-facing error messages and icons
- Best-in-class energy efficiency
- Eco-friendly certified for low, NOx emission and outperforms industry standard
- Very compact design for such a high performance heater allows for smaller overall equipment pads that won't intrude on your poolscape.
- Easy to install or retrofit in even the tightest spaces.
- A fully pre-mixed system with a highly efficient air and gas mixture lets MasterTemp heat up fast. No long waits before enjoying your pool or spa.
- Compare energy efficiency ratings and you'll find MasterTemp at the top of the list. Comfort and economy can go together.
- With a hot surface ignition (no pilot light) and pushbutton, digital controls, MasterTemp is as easy to operate as your home heating system. Plus, user-friendly indicator lights make system operation and monitoring a snap.
- The easy-to-view, rotating digital display places controls front and center, no matter how MasterTemp is positioned on your equipment pad.
- MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time.
- A tough, composite exterior handles the heat and weathers the elements.
- Safe operation is assured through a series of features, including; a water pressure switch that senses the pump is running to prevent overheating; high limit switches assure the heater turns off if water temperature exceeds factory set limits; manual gas shut-off when service is required; stack flue sensor also guards against overheating.
- Approved for installation on combustible surfaces.

| Brand | Pentair |
| Sub Brand | MasterTemp |
| Item | Low NOx Pool and Spa Heater |
| Type | High Performance |
| Gas Type | Natural Gas |
| Control Type | Digital |
| BTUH Input | 400,000 |
| Cabinet Width | 23.02" |
| Cabinet Depth | 32.61" |
| Cabinet Height | 28.15" |
| Gas Connection | 3/4" |
| Water Connection | 2" |
| Voltage Rating | 120/240 VAC |
| Frequency Rating | 60 Hz |
| Phase | 1-Phase |
| Flow Rate | 120 gpm |
Installation & safety: Installation must comply with the National Electrical Code (NEC) Article 680 and all local codes, and must be performed by a qualified pool professional or licensed electrician. Disconnect power before servicing.
California Proposition 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Warranty: Covered by the manufacturer warranty (terms in the product documentation).