SKU: 51319557060

PENTAIR 400K MAX-E-THERM LOW NOX HEATER - SR400LP

$1921.08 $2134.53
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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3

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Description

PENTAIR 400K MAX-E-THERM LOW NOX HEATER - SR400LPThe Pentair SR400LP Max E Therm 400K BTU Low NOx Heater delivers unmatched efficiency and reliability for pool contractors demanding professional grade performance. As the lightest heater in its class at just 138 pounds, this propane unit reduces installation labor costs while providing advanced digital controls and smart connectivity that pool professionals trust. Commercial Installation Benefits Designed for easy retrofit installations with its

The Pentair SR400LP Max-E-Therm 400K BTU Low NOx Heater delivers unmatched efficiency and reliability for pool contractors demanding professional-grade performance. As the lightest heater in its class at just 138 pounds, this propane unit reduces installation labor costs while providing advanced digital controls and smart connectivity that pool professionals trust.

Commercial Installation Benefits

Designed for easy retrofit installations with its compact form factor, this heater features rustproof Dura-Glas construction and ASME Code brass headers that withstand harsh commercial environments. The flexible 40-120 GPM flow rate accommodates various pool sizes, while the advanced ignition control with flame strength sensor ensures reliable operation that minimizes service callbacks.

Why Pool Contractors Choose MT Pools

MT Pools provides superior customer service with expert technical support for complex commercial installations. Our B2B wholesale pricing structure maximizes your profit margins while our reliable inventory keeps your projects on schedule. Join thousands of contractors who trust MT Pools for their heating equipment needs.

Frequently Asked Questions

Can the SR400LP integrate with existing Pentair control systems?

Yes, the Max-E-Therm SR400LP features smart connectivity that integrates seamlessly with Pentair IntelliCenter Control Systems for remote monitoring and control.

What are the installation clearance requirements?

The SR400LP requires 6 inches clearance from top and all sides, and must not be installed within 5 feet of pool/spa surface unless properly separated.

Is this heater suitable for both indoor and outdoor installations?

Yes, the Max-E-Therm is certified for both indoor and outdoor installation on combustible surfaces, with integral venting system included.

Does MT Pools offer technical support for installation?

Yes, MT Pools provides superior customer service with expert technical guidance to ensure proper installation and optimal performance for pool contractors.

Order Today

Experience the MT Pools difference with professional-grade equipment and unmatched B2B support. Contact our team for wholesale pricing and technical assistance on your next commercial pool heating project.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51319557060

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4.2 ★★★★★
Based on 5 reviews
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Verified Purchase
Natalie
Louisville, US
★★★★★ 5
Great socks
Fit Type: Classic Fit, Color: Gray Assorted, Size: Large
These worked perfectly for my son
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
M
Verified Purchase
My2cents
Lake Worth, US
★★★★★ 5
My favorite low socks ever
Fit Type: Classic Fit, Color: Gray Assorted, Size: Large
Under armour adult essential Lite no-show socks are 96% polyester and 4% spandex footwear of imported origin. The polyester content of the socks enables them to hold their shape in a better manner along with having a non-absorbent nature. Additionally, it enables the socks to retain the colour in a better manner. Spandex improves their fit along with helping them last for longer time. The flat fit construction of UA Men's Essential Lite is so designed to conform to foot for superior touch and feel. The material wicks engineered within the fabric dry sweat quickly and keep the feet fresh. The embedded arch support further keeps you going by reducing foot fatigue. The set comes with 6 pairs of socks with pull on closure for the perfect fit. Ultrathin lightweight construction of the socks adds to user comfort by allowing users to conduct physical activity and work out while wearing it. Elastic strength of the socks prevents them from slipping down irrespective of the shoes they are worn with. The socks come in 8-12 men shoe size and 9-12 women shoe size. They can be machine washed and are extremely durable while being cost effective. I ordered the socks based on their colour and design symmetry. So far my socks have been through multiple washes and still look new and user ready. I wear them daily because of their amazing fit and plan to buy more as Christmas gifts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 14, 2022
A
Verified Purchase
Amber Castillo
West Palm Beach, US
★★★★★ 5
Love these socks!
Fit Type: Classic Fit, Color: Black, Size: Large
They are a little on the thin side, but that is how I like them. Thin, comfortable, breathable, but still sturdy. They work great for me and I have bought them several times for me and my kids over the years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2024
J
Verified Purchase
Jay Zuhosky
Birmingham, US
★★★★★ 4
Thin
Fit Type: Classic Fit, Color: Gray Assorted, Size: Medium
I bought these thinking they would be slightly thicker material. They are thin but don't make my feet sweat working outside in the heat while wearing them during my work shift. They are comfortable and stay in place so I don't have to keep fishing for them inside my shoe to move them up a bit. The one thing I wish they had was the support band in the middle of the foot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2023
D
Verified Purchase
dave
Belleville, US
★★★★★ 5
Super comfortable
Fit Type: Classic Fit, Color: Black, Size: Large
Love these socks. They are very soft fabric but also heavy so they are very durable. And the price is far cheaper than any of my local stores.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2025

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