Apr 01, 2026 - 12:44 PM
We’ve provided several answers to questions related to Pentair Sta-Rite Max-E-Therm 400 Propane Gas Heater, SR400LP, 400K BTU , see some other helpful Q&A related to this product.
Question: What type of heat exchanger does the heater use?
Answer: The sta-rite max-e-therm 400 uses a cupro-nickel heat exchanger. Cupro-nickel is a copper-nickel alloy known for excellent corrosion resistance, making it ideal for pools with challenging water conditions such as low pH or high flow.
Question: Is the heater energy efficient or green?
Answer: Yes, the sta-rite max-e-therm 400 is an energy-efficient product. Energy efficiency reduces operational costs and environmental impact, making it a smart choice for eco-conscious buyers.
Question: What is the warranty on the heater?
Answer: The sta-rite max-e-therm 400 comes with a 2-year warranty when professionally installed. This warranty provides protection against defects and peace of mind, especially with professional installation, which can help maximize product life.
Question: Is the heater certified for safety or standards?
Answer: Yes, the sta-rite max-e-therm 400 is CSA Certified. CSA stands for Canadian Standards Association, which ensures the product meets strict safety and performance standards, giving you peace of mind.
Question: What control type does the heater use?
Answer: The sta-rite max-e-therm 400 uses digital controls, which provide precise temperature management and easy operation for enhanced user convenience and accuracy.
Question: What is the BTU input of the heater?
Answer: The sta-rite max-e-therm 400 has a 400,000 British Thermal Unit (BTU) input. A high BTU rating means the heater can warm your pool or spa quickly, which is especially valuable for larger water volumes.
Question: What type of fuel does the heater use?
Answer: The sta-rite max-e-therm 400 heater uses liquid propane as its fuel source. Propane is an efficient and widely available fuel, which can be beneficial for homes without natural gas lines.
Question: What is the frequency rating of the heater?
Answer: The frequency rating of the sta-rite max-e-therm 400 is 60 Hz (Hertz), which matches standard North American electrical systems and ensures compatibility with most residential power supplies.
Question: What voltage does the heater operate on?
Answer: The sta-rite max-e-therm 400 operates on both 120V and 240V, offering flexible installation options for various electrical setups.
Question: What is the minimum flow rate required for the heater?
Answer: The minimum flow rate required for the Sta-Rite Max-E-Therm 400 is 40 gallons per minute. Knowing this helps ensure your pool or spa pump is compatible and can maintain safe, efficient heater operation.
Question: What is the maximum flow rate for water through the heater?
Answer: The maximum flow rate for the sta-rite max-e-therm 400 is 120 gallons per minute. A higher flow rate supports larger pools and ensures efficient heating, making this heater ideal for bigger applications.
Question: How much does the heater weigh?
Answer: The sta-rite max-e-therm 400 heater weighs 138 pounds. Knowing the weight is useful for handling, transportation, and determining if additional support or assistance is needed during installation.
Question: What are the overall dimensions of the product itself?
Answer: The overall dimensions of the sta-rite max-e-therm 400 are 26 inches high, 26 inches wide, and 30 inches deep. This information is helpful for precise space planning and for comparing with other equipment.
Question: What is the depth of the product?
Answer: The product depth of the sta-rite max-e-therm 400 is 30 inches. This ensures you have enough room to accommodate the unit, which is crucial for both performance and service access.
Question: What is the width of the product?
Answer: The product width is 26 inches. This helps you determine the total space needed for the sta-rite max-e-therm 400 itself, separate from the cabinet dimensions.
Question: What is the height of the product?
Answer: The product height is 26 inches. This dimension is important for installation, especially if you have height restrictions in your equipment area for a sta-rite max-e-therm 400.
Question: What is the depth of the heater cabinet?
Answer: The cabinet depth of the sta-rite max-e-therm 400 is 31.69 inches. This measurement allows you to plan for the right amount of space and helps with accessibility and installation.
Question: What is the width of the heater cabinet?
Answer: The cabinet width of the sta-rite max-e-therm 400 is 25.15 inches. Knowing the cabinet width is valuable for proper placement and to avoid any clearance issues during setup.
Question: What is the height of the heater cabinet?
Answer: The cabinet height of the sta-rite max-e-therm 400 is 30.03 inches. Having a specific cabinet height helps ensure the heater fits well in your designated space, making installation easier and more predictable.
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