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Pentair Sta-Rite Max-E-Therm 333 HD Natural Gas Heater, Cupronickel, SR333HD

SKU SR333HD

TradeGrade

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Pentair Max-E-Therm® SR333 HD Natural Gas Pool & Spa Heater 333K BTU

Stay ready to swim with the smart, high-performance Max-E-Therm heater. Now with advanced connectivity and energy-saving features:

  • Smart control via Pentair IntelliCenter® – manage from anywhere (sold separately)
  • Real-time alerts to your device for performance updates
  • Optimized ignition with flame strength monitoring
  • Easy-to-use full-text digital display
  • Optional Smart Bypass Valve 462048 saves up to 35% on energy costs

Reliable, efficient, and now smarter than ever.

Support Documents:

Specifications:

  • Brand: Pentair
  • Application: Indoor, Outdoor, Pool, Spa
  • Shipping Dimensions: 27.75 x 34.25 x 32 inch
  • BTU Input: 333000 British thermal unit
  • Cabinet Depth: 31.69 inch
  • Cabinet Height: 30.03 inch
  • Cabinet Width: 25.15 inch
  • Commercial, Residential, or Professional: Residential
  • Control Type: Digital
  • Weight: 123 pounds
  • Flow Rate Max: 120 gal/min
  • Flow Rate Min: 33 gal/min
  • Frequency Rating (Hz): 60
  • Fuel Type: Natural Gas
  • Green or Energy Efficient Product: True
  • Phase: Single
  • Standards Approvals: CSA Certified
  • Tubing Material: Cupro Nickel
  • Voltage: 120V, 240V
  • UPC Code: 022315306165
  • Warranty: 2-year warranty with professional installation
Shipping, Installation & Warranty

Free Shipping: Most orders ship within 1 business day, unless otherwise noted.

Disclaimer: Professional installation (not included) is required, and proof of installation by a certified technician is needed to validate the factory warranty.

Warranty: Visit our warranty page or refer to the specific product user manual.

Disclaimer: Professional installation (not included) is required for warranty validation.

Free Shipping

Most orders ship same day when ordered by 12 PM ET.

30-Day Returns

Easy returns on new, unused items.

Authorized Dealer

Genuine products + manufacturer-backed support.

On-Staff Pool Pros

Call, text, email, or chat for expert help.