SKU: 4936817128

PENTAIR HD ASME HEATER 400K BTU-NATURAL - 461021

Sale price$2032.04 Regular price$2257.82
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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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4.6 ★★★★★
Based on 19 reviews
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Verified Purchase
MSomwhat
Houston, US
★★★★★ 5
So cute! Durable!
Size: 1 Count (Pack of 1), Style: Shark
These are my dogs “babies” and we are on #3! Adorable! She loves them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
A
Verified Purchase
Aubrey
Grantham, US
★★★★★ 5
great dog toy for small and large!
Size: Medium (Pack of 1), Style: Gator
we have a very large silver lab that tears through toys, and very fast! some toys only last a day while others last a week or so... he has yet to tear this on up at all and we have had it for about 3 weeks. we also have a very small teacup yorkie, so some toys we get he cannot even play with, this one he can squeak and carry around which is great! it very quickly became one of their favorite toys! will buy again if he ever does destroy it !!! update: after a month of the lab and small yorkie playing with this some of the fabric stared to tear on the end of the toy, they still love it and it still squeaks perfectly fine. didn't think it would last this long with the big lab, will order new one when they do finally destroy it for good
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Reviewed in the United States on September 10, 2015
L
Verified Purchase
LiLi Conway
Chelsea, US
★★★★★ 4
A must have for my little puppers
Size: Small (Pack of 1), Style: Monkey
Bought this for a Chihuahua. He came from a bad situation that gave him screaming dreams of terror in the middle of the night, waking up, screaming. I would find him frozen in absolute terror. Poor dude. Now, he seems full of rage, and I get it because I know half of his story. And we love him anyway. He has 2 big brothers that will help show him the way, living his best life ever! Long story short; I first started buying this Petstages toy many years ago for my blind MinPin. Seeing it still, out here for sale always puts a smile on my face. Back then, they were a better quality. Now-a-days, the material around the squeaky is on the loose side, making it easier to destroy when my big dogs get it. Still, it brings back wonderful memories, is soft for a small dog that doesn’t destroy his things, it squeaks and they are usually loud (which is a must have, if you ask me), and it is cute to boot!
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Reviewed in the United States on April 12, 2025
D
Verified Purchase
Deena Budd
Omaha, US
★★★★★ 5
THE favorite toy
Size: 1 Count (Pack of 1), Style: Shark, Size: 1 Count (Pack of 1), Style: Shark
I found this toy used at a thrift store almost 1 year ago. My Shih tzu mix loved it so much till all the seams ripped out and 2 out of 3 squeekers fell out and it was shambles, hardly usable at all. 1 week ago I decided to try my luck to find a similar shark toy for Finnegan. I couldn't believe my eyes when I found THE EXACT same toy!! When I unboxed it, I put the old and new side-by-side and imagine his surprise, it was priceless! Very pleased with this.
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Reviewed in the United States on May 6, 2026
L
Verified Purchase
Lynn Suzanne
Pawtucket, US
★★★★★ 5
Best Dog Toy Ever!
Size: Small (Pack of 1), Style: Monkey, Size: Small (Pack of 1), Style: Monkey
Unbelievable. See below previous reviews. Today is 3/22/2023 (4th Update): Cavachon is now three years old. THIS MONKEY is STILL played with DAILY. She’s played with and lost interest in dozens of other toys in the past three years, but Monkey is always the go-to. Now only on Monkey #6, which is remarkable considering the daily torture she puts Monkey through. Other toys get destroyed, but Monkey endures. This toy is our dog’s best friend and playmate! 10/9/21 (3rd update): Its rare that any toy (without food inside) keeps the interest of our Cavachon for even 30 minutes… yet day after day, she runs around with Monkey for at least an hour. She’s on her 4th Monkey… and this thing gets mauled, chewed, super-squeaked, fetched, and shook violently EVERY DAY. Durability times ten! 2/21/21 (2nd Update): Crazy pup is now 14 months old, and she plays DAILY with “monkey”! She’s on her third monkey because eventually she pulls off the tail, but each of her first two lasted months. ORIGINAL REVIEW MAY 2020: There is something really special about this monkey... Our 5-month-old Cavachon LOVES this toy. I recently ordered a second one, in case she wears out the first one. She knows it’s her “monkey” and finds it when we ask her “Where’s monkey?” She fetches it, walks around squeaking it, and she also zooms around the house shaking it furiously by the tail. She’s been playing with, and chewing on all parts of It, DAILY for three months. In the photo, you can compare the brand-new one, still on the cardboard, with the one she’s mauled for three months. Not much difference. I would say this is an extremely durable, and safe, toy.
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Reviewed in the United States on May 15, 2020

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