Swimables Replacement Hayward FD Heater Thermistor Replacement FDXLTER1930 | Swimables SW-42-931

Swimables Replacement Hayward FD Heater Thermistor Replacement FDXLTER1930 | Swimables SW-42-931

Marsoni

M251S

$34.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Swimables Replacement Hayward FD Heater Thermistor Replacement FDXLTER1930 | Swimables SW-42-931When your Hayward Universal H Series Low NOx pool heater needs a new temperature sensor, the Swimables Thermistor SW 42 931 is the dependable answer. Functioning as a drop in replacement for the Hayward FDXLTER1930, this sensor precisely tracks water temperature inside the heater, enabling the control system to maintain peak efficiency and energy conservation. Engineered from resilient materials that hold up against sustained heat and moisture, the SW

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The quality is excellent. They are more of a faded red. I ordered a 10 worried they might be snug but that was a mistake. I should have stuck with my normal size 8. (I purchased an Amazon brand of this style that runs small and the size 10 feels more like an 8.) I love the length-not too short and not too long. They are sturdy cotton. There is not any stretch to the fabric. I’m giving them to a friend. I actually tried to shrink them by washing them in hot water and hot dryer but it didn’t make them fit me any better. Since they were already too big, I can’t really say if they shrunk by doing this. They weren’t huge on me before washing and seemed to fit the same way after. I tried wearing them all day and they seemed to loosen up even further. I was continuously pulling them up. I really feel like the sizing is accurate and you can be pretty confident of ordering your regular size. I’ve already reordered the size 8. I’ll update my review if there any issues with that size.

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Reviewed in the United States on July 19, 2025

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Emily C.

Alexandria, US

★★★★★ 3

Unattractive but well made

Size: 4, Color: Sand

The style was unflattering overall. The shorts fit well in the waist, legs, and seat; they just made me look masculine which is not the look I was going for. For reference I am 5’7, 135#, and purchased a size 4 (which again, fit me well). I’m not sure if the issue was the length, or maybe they just down have a flattering cut - they are very boxy and hide any curves I have. 3 stars because the fit was good and they are well made. But just not attractive.

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Reviewed in the United States on May 4, 2026

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Wild-T

Dallas, US

★★★★★ 5

Nice look and feel

Size: 6, Color: Sand

These are beautiful shorts. Bought these for my wife and they look great and have a nice texture that gives them a higher and look and feel.

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Reviewed in the United States on January 10, 2026

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Port Orchard, US

★★★★★ 4

Nice design Size runs big

Size: 4, Color: Nautical Navy

The size 4 runs kinda big. It’s a very relaxed fit. I’m 5’8” 140 lbs and I need a belt to keep the size 4 up. Very nice fabric, great cut. I’m happy with them just didn’t expect them to be as baggy.

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Reviewed in the United States on August 6, 2025

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Alexandria, US

★★★★★ 5

Stretch out, size down but love the shorts.

Size: 8, Color: Ocean Breeze

Love these shorts. My favorites ever. I always always wear a size 8 in shorts. The 8 fit initially, but stretched out so much, I didn’t have to unbutton them to get them out. I bought 3 colors. I finally bought one in a size 6. Perfect fit, even if they do stretch a little. Returning the unworn ones, and replacing with size 6.

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Reviewed in the United States on August 30, 2025