SKU: 4936817128

PENTAIR HD ASME HEATER 400K BTU-NATURAL - 461021

Sale price$2032.04 Regular price$2257.82
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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28

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Description

PENTAIR HD ASME HEATER 400K BTU-NATURAL - 461021The Pentair MasterTemp 400 ASME Heavy Duty Natural Gas Heater delivers commercial grade performance that pool contractors trust for large scale installations. With 400,000 BTU capacity and ASME certification, this heater handles pools and spas up to 50,000 gallons with exceptional reliability and efficiency. Commercial Application Benefits Engineered for demanding commercial environments, this heater features a cupro nickel heat exchanger that resists

The Pentair MasterTemp 400 ASME Heavy Duty Natural Gas Heater delivers commercial-grade performance that pool contractors trust for large-scale installations. With 400,000 BTU capacity and ASME certification, this heater handles pools and spas up to 50,000 gallons with exceptional reliability and efficiency.

Commercial Application Benefits

Engineered for demanding commercial environments, this heater features a cupro-nickel heat exchanger that resists corrosion and extends service life, reducing costly maintenance calls. The advanced ignition control module ensures consistent gas control and reliable startups, while the bronze header design simplifies maintenance procedures for service technicians. With up to 84% efficiency and 120 GPM flow rate, contractors can deliver faster heat-up times and lower operating costs to their commercial clients.

Why Pool Contractors Choose MT Pools

MT Pools understands the demands of commercial pool projects. Our superior customer service includes expert technical support, reliable inventory management, and wholesale pricing that protects your profit margins. With our daily recurring customer support, you get the partnership you need to keep large projects on schedule and within budget.

Frequently Asked Questions

What size pools can the MasterTemp 400 ASME handle?

The MasterTemp 400 ASME is designed for commercial pools and spas up to 50,000 gallons, making it ideal for hotels, resorts, and large residential installations.

Why is ASME certification important for commercial installations?

ASME certification ensures the heater meets strict commercial safety standards and building codes, providing contractors with confidence for commercial projects and regulatory compliance.

What makes the cupro-nickel heat exchanger superior?

Cupro-nickel construction provides exceptional corrosion resistance and durability compared to standard materials, extending equipment life and reducing maintenance costs for commercial applications.

Does MT Pools provide installation support for commercial projects?

Yes, MT Pools offers expert technical guidance and support for professional installation requirements, ensuring proper setup and warranty compliance for commercial contractors.

Order Your Commercial Heater Today

Join the pool contractors who rely on MT Pools for their commercial heating solutions. Our team provides the technical expertise and wholesale pricing you need for successful large-scale projects.

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: 4936817128

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SRP846
Natrona Heights, US
★★★★★ 4
Helps with the itch.
It seems that nothing helps with the itch from an encounter with poison ivy. This product was very good for the itching, it helped me for several hours after my cool shower each day. I would buy this again if the need should arise.
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Reviewed in the United States on February 27, 2026
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Vikki A. clark
Fort Morgan, US
★★★★★ 5
I would never be with out this and calamine lotion!
Good stuff. Try to use it as soon as possible after contact with poison plants. I keep using it until the rash subsides. Leave it on for a few minutes before rinsing. My yard has a lot of poison ivy, so I make sure I always have it on hand.
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Reviewed in the United States on May 2, 2026
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Lili
Lexington, US
★★★★★ 3
Strong Smell
This soap confuses me a little bit, I thought it wouldn't have a smell since the listing said: 'It's free of harsh chemicals, parabens, GMOs, petroleum, phthalates, and artificial dyes and scents, so it is 100% safe and effective. ' But it definitely has a distinct and pretty strong soapy smell, so if you are someone with very sensitive skin be warned, because it is strong.
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Reviewed in the United States on October 14, 2024
M
Verified Purchase
MarO
Pawtucket, US
★★★★★ 5
Good to have on hand
Love this product. It works well to clear up poison ivy, which is its intended use. Thank you
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Reviewed in the United States on December 5, 2025
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Verified Purchase
CSell
Charlottesville, US
★★★★★ 5
Stops the Poison From Spreading
This soap is great, it stops the itching and burning right away. A must have!!!!
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Reviewed in the United States on December 6, 2025

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