SKU: 52334199281

PENTAIR MAX E THERM HIGH LIMIT SWITCH - 42001-0063S

Sale price$49.55 Regular price$55.05
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Description

PENTAIR MAX E THERM HIGH LIMIT SWITCH - 42001-0063SThe Pentair Max E Therm High Limit Switch (42001 0063S) is an essential safety component that pool service professionals rely on to protect heater systems from dangerous overheating conditions. This critical safety device automatically shuts down the system at 135F, preventing costly equipment damage and ensuring customer safety in residential pool and spa installations. Professional Service Benefits Pool service contractors depend on this non

The Pentair Max-E-Therm High Limit Switch (42001-0063S) is an essential safety component that pool service professionals rely on to protect heater systems from dangerous overheating conditions. This critical safety device automatically shuts down the system at 135°F, preventing costly equipment damage and ensuring customer safety in residential pool and spa installations.

Professional Service Benefits

Pool service contractors depend on this non-resettable switch to maintain system integrity and reduce emergency service calls. The clear HLS LED indicator on MasterTemp heaters makes diagnosis quick and efficient, reducing troubleshooting time on service calls. Compatible with both Max-E-Therm and MasterTemp systems, this switch ensures your technicians can service a wide range of installations with confidence.

Why Pool Contractors Choose MT Pools

MT Pools understands that heater repairs can't wait. Our superior customer service ensures you get the right parts fast, keeping your service operations running smoothly. With our B2B wholesale pricing and reliable inventory, you maintain healthy profit margins while providing exceptional service to your customers.

Frequently Asked Questions

How do I know when the high limit switch needs replacement?

On MasterTemp heaters, the "HLS" LED indicator will light up when the high limit switch has activated and needs replacement. The switch is non-resettable once triggered.

Is this switch compatible with both Max-E-Therm and MasterTemp heaters?

Yes, the 42001-0063S high limit switch is designed for both Pentair Max-E-Therm and MasterTemp heater electrical systems, making it versatile for service contractors.

What temperature triggers the high limit switch?

The high limit switch activates at approximately 135°F (57.2°C) to prevent dangerous overheating and protect the heater system from damage.

Does MT Pools offer technical support for installation?

Yes, MT Pools provides expert technical guidance to pool contractors, along with access to Pentair installation guides and wiring diagrams for proper installation.

Order Today

Keep your service van stocked with this essential safety component. MT Pools' superior customer service and fast shipping ensure you're always ready for emergency heater repairs.

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: 52334199281

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4.9 ★★★★★
Based on 26 reviews
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Verified Purchase
Andrea Davis
Dallas, US
★★★★★ 3
Comfy but smelly
Size: King (2 Pack)
These expand quickly and are comfortable, but they smell like chemicals faintly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
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PandaPanda
Fort Morgan, US
★★★★★ 5
Love these pillows!
Size: Queen (2 pack)
I’m a side and stomach sleeper. I’ve bought so many pillows recently trying to find one that doesn’t kill my neck or shoulder. I felt like I was looking for a unicorn. For some reason this pillow just works. It has a higher loft, which I prefer, but it’s also super squishy, which I also prefer. It somehow has the best of both worlds. They feel high quality, are adjustable in terms of density since you can remove as much filling as you want, they actually fill my pillowcases so they’re not flopping around the pillow, and they maintain their shape after a full night of sleeping on them, the price point for two pillows is just right, and best of all, they actually stay cool. I am a hot sleeper so that last point is worth the cost of entry all by itself. I have no neck or shoulder pain after getting a full night’s sleep on these pillows. The only negative is the initial smell of the pillows. It’s pretty strong, but I’m sure this will lessen over time.
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Reviewed in the United States on April 3, 2026
K
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Kindle Customer
Natrona Heights, US
★★★★★ 5
Soft and cool.
Color: Cooling Blue Cover, Size: Queen (Pack of 2)
Love this pillow set. Comfortable addition and nice and cool at all times. Going to be great for when the hot weather hits
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Reviewed in the United States on June 8, 2026
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Verified Purchase
Anna T
Dallas, US
★★★★★ 5
As advertised for once! Lol
Color: Cooling Blue Cover, Size: Queen (Pack of 2), Color: Cooling Blue Cover, Size: Queen (Pack of 2)
Queen size set of 2 pillows, I'm giving it 5stars first bc it has a good length and width!! If you've ever bought memory foam pillows before you know some are small!! Anyways after having it for 5nights, we loved that me and my huddy could adjust the Thickness amount we had in it to our needs, me needing a thick pillow and my husband needing a flatter one. So this was perfect for that. So far its nice to sleep on, stays cool, doesnt get hot. I would say its on the frimer side but softer the more foam you take out! Really its just good for the amount you spend!! Will it last 10years probably not but what does now a days. This is the only time my huddy n I bought the same pillow and both love it so I'm just still in shock it worked out so well!!
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Reviewed in the United States on April 28, 2026
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Lana Cannon
Alexandria, US
★★★★★ 5
Adjustable pillows
Color: Cooling Blue Cover, Size: Queen (Pack of 2)
I love these because they don't go flat. You can pull out whatever you need to make them comfy for you. They come in two different layers. So you have that protective cover over the main case that holds the memory foam. They're amazing to sleep on. I have had these last for years without going flat. If you hate flat pillows this is the way to go. They are very easy to wash. You just have to separate layers. They are very thick, you can adjust the thickness. Everyone in my house has at least one. They are worth the money. I have never had to replace them, because they went flat.
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Reviewed in the United States on May 6, 2026

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