Max-E-Therm Heater 333000 BTU LP Ele. Ign.



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Product Description

  • Rust-Proof Enclosure - Unlike conventional metal enclosures, the Max-E-Therm is made of Dura-Glas® - a sleek, lightweight and rustproof material that withstands heat and the elements.
  • Exact Temperature Controls - Weatherproof temperature controls that can be set to your specifications.   Pivoting UV-resistant plastic visor covers the Digital Display.   Accommodates temperatures for both a pool and a spa running off of the same heater, in Fahrenheit (°F) or Celsius (°C).
  • Energy Efficient - PMG combustion technology improves Efficiency and reduces operating costs.  Also provides faster heat ups.  The three sizes available are 83% efficient or higher.
  • Safety - Internal safety feature sets maximum temperature levels.  Full diagnostic lights for troubleshooting problems.  The diagnostic indicator lights tell you whether to service the heater or the pump/filter system.
  • Environment Friendly - Exceeds all air pollution standards.  Electronic ignition enables you to never worry about a pilot light blowing out or leaking gas.
  • Proven Sta-Rite Technology - The Max-E-Therm Heater is the newest member in our family of advanced technology pool and spa products.  Our quality pumps and filters have been used for years to enhance the enjoyment of pools and spas nation wide.
  • Warranty - 2 years parts & labor
333,000 BTU

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Ask a Question

Asked on 05/31/2016 by Bob

Is this LP version of the Max-E-Therm Model 333 adequate for a 24,000 gal pool?

Inyo Answer

Answered on 06/01/2016 by Product Specialist Lennox H.

Hi Bob, This unit does use propane gas and is adequate for a 24,000 with a surface area of 500-700 sq.ft.


Asked on 01/20/2016 by Joseoh

How many volts?

Inyo Answer

Answered on 01/21/2016 by Product Specialist Lennox H.

Hi Joseoh, The Max-E-Therm Heater's w/ Electronic Ignition can be connected to 120 or 240 Volt, 60 Hz., Single Phase power.


Asked on 05/14/2015 by

Have a 20,000 gallon pool. Will the this heater be enough or should I get the 400,000 BTU. Don't really care if the 333,000 takes a little longer to heat up the pool

Inyo Answer

Answered on 05/15/2015 by Product Specialist Patrick P.

The 333,000 would be more than sufficient for a 20,000 gallon pool.


Asked on 01/16/2012 by Guest

Will a gas heater operate at the low speed of a dual speed motor?

Inyo Answer

Answered on 01/16/2012 by Product Specialist Patrick P.

Probably not - Most gas heater will shut off at low GPM levels (20-40) to keep the heater cores from overheating - 20 for 200 BTUs, 40 for 400 BTUs. Depending on your pool system you might get these GPM levels at the low speed but generally these heaters must be run at the motor's high speed.


Asked on 03/29/2008 by Guest

Is the sta-rite heater Max E Therm low NOx rated for Texas?

Inyo Answer

Answered on 03/29/2008 by Product Specialist Patrick P.

Yes the Sta Rite Max E Therm heaters are LoNox rated for Texas and California.

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Max-E-Therm Owner's Manual (8.46 MB)

Pentair Warrany Card (1.34 MB)

Please feel free to view our complete library of owners manuals.