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

Marsoni M251S
Sale price$34.99
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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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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.5 ★★★★★
Based on 1513 reviews
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Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 5
A peaceful nights sleep always!!!
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Sleep peacefully, undisturbed, wake up refreshed. None habit forming.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
M
Verified Purchase
Mike
Battle Creek, US
★★★★★ 4
Works
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Been taking these for years.. They work although sometimes I think they flare up my heartburn
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
S
Verified Purchase
Starla F
Charlottesville, US
★★★★★ 5
The best Melatonin - it's part of my nightly routine.
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
The best Melatonin - it's part of my nightly routine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026
E
Verified Purchase
Eleanor
Phoenix, US
★★★★★ 5
The small tablet dissolves fast and is easy to take.
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Mostly I don't even taste the tablet under my tongue, and I hardly feel it. Occasionally I taste it, and it's a bit bitter. I wait to take it until I'm feeling sleepy, and I'm asleep within 5 minutes of taking it. I think it helps me to stay asleep for several hours.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 30, 2020
S
Verified Purchase
Sarah Rothlisberger
Lake Worth, US
★★★★★ 3
They do work but they taste terrible!
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
I got these for my special needs son after his doctor recommend trying melatonin to help with some sleep disturbances. They definitely help him go to bed calmly and even stay in bed through the night but I have to bribe him to get him to take them because the taste is so bad!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2021

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