SKU: 52431737843

PENTAIR MASTERTEMP NATURAL 400K BTU - 460736

Sale price$1622.37 Regular price$1802.63
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

PENTAIR MASTERTEMP NATURAL 400K BTU - 460736The Pentair MasterTemp Natural Gas 400K BTU Pool Heater (Model MT400NASTD) delivers the professional grade performance pool contractors need for efficient commercial and residential installations. With 400,000 BTU HR heating capacity and advanced digital controls, this heater provides precise temperature management that keeps your clients satisfied and your service calls to a minimum. Commercial Installation Benefits The compact 21" x 21" x 28"

The Pentair MasterTemp Natural Gas 400K BTU Pool Heater (Model MT400NASTD) delivers the professional-grade performance pool contractors need for efficient commercial and residential installations. With 400,000 BTU/HR heating capacity and advanced digital controls, this heater provides precise temperature management that keeps your clients satisfied and your service calls to a minimum.

Commercial Installation Benefits

The compact 21" x 21" x 28" footprint maximizes installation flexibility while the super quiet operation eliminates noise complaints at residential and commercial sites. Low NOx emissions meet strict environmental standards, ensuring code compliance for contractors working in regulated markets. Direct connection to Schedule 40 PVC pipe simplifies installation and reduces labor costs.

Why Pool Contractors Choose MT Pools

As your trusted B2B partner, MT Pools provides superior customer service with expert technical support for every installation. Our wholesale pricing structure protects your profit margins while our reliable inventory keeps your projects on schedule. Join thousands of contractors who depend on our daily recurring customer support.

Frequently Asked Questions

What electrical requirements does the MasterTemp 400K BTU need?

The MasterTemp requires 120/240 Volts AC, 60 Hz, single phase power, making it compatible with standard residential and commercial electrical systems.

Can this heater work with salt water pools?

Yes, the MasterTemp is designed for heating chlorine, bromine, or salt system swimming pools and spas, providing versatility for all pool types.

What warranty coverage does this heater include?

The MasterTemp includes a limited factory warranty with details provided on the warranty registration card. Professional installation by qualified personnel is required to maintain warranty coverage.

Does MT Pools offer technical support for installations?

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

Order Today

Secure your MasterTemp heater with MT Pools' reliable B2B service and wholesale pricing. Our team is ready to support your success with fast shipping and expert technical guidance.

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: 52431737843

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4.6 ★★★★★
Based on 17 reviews
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K
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Krissy
Louisville, US
★★★★★ 5
The best
Size: 9-11, Color: Black
Seriously the best non slip low cut socks you can find. They stay in place all day and I love the fabric. They are thin which I prefer. These are really the only socks I wear.
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Reviewed in the United States on March 27, 2026
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Cassie Huerta
Boise, US
★★★★★ 5
Great socks for the price!
Size: 6-10, Color: Black, Size: 6-10, Color: Black
I love these socks, they are perfect no shows but the material is thick enough for toes not too go thru. The grip is perfect and keeps the sock in place all day. I would definitely order true to size as the fit was perfect. I was surprised to find these socks at the price I did, especially when I got the socks in both black and white.
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Reviewed in the United States on December 9, 2025
K
Verified Purchase
Kayla
Lake Worth, US
★★★★★ 5
Best non-slip no show sock!
Size: 6-10, Color: Black
I love these socks! I wear them mostly with my slip on vans. The are thin so your feet can breathe (I hate thick socks). They have a grip on the heal so that they don't slip off of your feet, and it actually works! My only negative about these socks would be that if you have bigger than a size 8 foot, I would not purchase them because they do run a bit small. I wear a size 7 and they fit perfectly! They do look very tiny upon unpacking, but they stretch to the according size. I would also recommend letting them air dry after washing them and not putting them in the dryer. The first pair I purchased, I made the mistake of drying them and they shrank to an unbelievably small size. I've had my second set of socks for over 4 months now and have not had any problems since Ive been air drying them. I have not encountered any problems with them tearing as other have stated. Even though these are thin socks, they seem to be made quite well in my opinion.
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Reviewed in the United States on December 5, 2022
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Leah P.
Charlottesville, US
★★★★★ 5
I buy these again and again through the years!
Size: Medium, Color: Austin Brown Assorted (6-pairs)
Love these. After a year or two I wear holes in the bottoms because I wear them so much. Worth the little bit higher price because of the fit and comfort. Love how they are truly no show
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Reviewed in the United States on October 18, 2025
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R3⭐️
Fort Morgan, US
★★★★★ 4
Good quality but tight on toes
Size: 6-10, Color: White/Assorted
These are great socks that stay in place, but they scrunch my toes together like crazy. My feet are normal width. When I first started wearing them I noticed my feet would ache after an hour or two.
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Reviewed in the United States on April 26, 2026

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