SKU: 37040009372

MRCOOL Mini Split Thermistor (Temp Sensor) for A-09-HP-WMAH-230B Air Handler | OEM Replacement

$42.06 $46.73
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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

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Description

MRCOOL Mini Split Thermistor (Temp Sensor) for A-09-HP-WMAH-230B Air Handler | OEM ReplacementFix inaccurate temperature readings, restore proper cooling and heating, and eliminate common mini split issues with this genuine MRCOOL thermistor (temperature sensor). This OEM thermistor is designed for use in select MRCOOL wall mounted mini split air handlers and plays a critical role in system performance. It continuously monitors temperature and sends data to the control board, allowing your system to adjust compressor operation, fan speed, and

Fix inaccurate temperature readings, restore proper cooling and heating, and eliminate common mini split issues with this genuine MRCOOL thermistor (temperature sensor).

This OEM thermistor is designed for use in select MRCOOL wall-mounted mini split air handlers and plays a critical role in system performance. It continuously monitors temperature and sends data to the control board, allowing your system to adjust compressor operation, fan speed, and defrost cycles accurately.

If your mini split is not maintaining temperature, short cycling, freezing up, or displaying error codes, a faulty thermistor is one of the most common causes.

Common Problems This Thermistor Fixes:

  • Mini split not cooling properly or blowing warm air
  • Mini split not heating correctly
  • Incorrect room temperature readings
  • Evaporator coil freezing or icing up
  • System short cycling (turning on and off repeatedly)
  • Error codes related to temperature sensors
  • Fan not operating as expected

Key Features:

  • Genuine MRCOOL OEM replacement part
  • Designed for accurate temperature sensing and system control
  • Direct replacement for factory-installed thermistor
  • Helps restore efficiency and proper operation
  • Plug-and-play connection (model dependent)

Compatible Model (Guaranteed Fit):

  • A-09-HP-WMAH-2308 Wall-Mounted Mini Split Air Handler

Part Number: 11201007003447

⚠️ Important Fitment Notice:

This thermistor is guaranteed to fit the model listed above. It may be compatible with other MRCOOL mini split systems or similar brands, but compatibility is not guaranteed unless specifically listed.

If your model is not listed, contact us before ordering and we will help verify fitment.

What Is a Thermistor?

A thermistor is a temperature sensor used by your mini split system to monitor air and coil temperatures. When it fails, the system may behave unpredictably, including poor cooling performance, incorrect temperature control, or shutdown errors.

Additional Notes:

  • Stock images may be used for this listing
  • Professional installation recommended
  • Always match part numbers when replacing HVAC components

Restore your mini split’s performance and avoid unnecessary system replacement—replace the thermistor and get your system running like it should.

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: 37040009372

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Nimby5956
Houston, US
★★★★★ 5
Quality Product
Style: SPF 50, Size: 6 Ounce (Pack of 1)
Have been using this for years. Love this product. Works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
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Jaqueline Campos
Whiting, US
★★★★★ 5
Good sunscreen, but the shade didn’t work for me
Color: Medium
I bought the Colorescience Flex in Medium because I had seen great reviews and liked the idea of a tinted mineral sunscreen. The formula itself felt really high quality and it did provide good sun protection, but the shade didn’t end up working for my skin tone. ✔️ What I liked: - Great daily mineral sun protection. - Lightweight texture and easy to apply. - Didn’t irritate my skin or cause breakouts. - Nice natural finish at first. ❌ What I didn’t like: - On my skin, the Medium shade looked orange. - The color didn’t blend well with my undertone. - I had to work it in quite a bit to avoid a noticeable line with my neck. I think the formula is really good, but the shade selection definitely requires care. In my case, it just wasn’t the right match
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Reviewed in the United States on May 21, 2026
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Sasha
Natrona Heights, US
★★★★★ 5
Finally found my perfect match!! In foundation!
Color: Medium, Color: Medium
I’ve used many high-end foundations over the years, but Colorescience has become my everyday favorite. It feels incredibly lightweight on the skin and provides a natural, healthy-looking finish that doesn’t feel heavy or cakey. The added SPF is a huge bonus and makes my morning routine so much easier. I also love how perfectly it matches my skin tone, it blends seamlessly and looks like my skin, just more even and polished. If you prefer a natural, lightweight foundation with the added benefit of sun protection, this one is definitely worth trying.
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Reviewed in the United States on June 5, 2026
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Brittanie Lynn
Lowell, US
★★★★★ 5
Worth the investment! It lasts!!
Color: Medium, Color: Medium
I have been using this religiously as my foundation for over a year! I love it. It works best for me when I use moistuzer, let it dry enough so you have a little slip. A LITTLE goes a long way and double check the bottle because even when it feels empty it’s not fully empty :) it’s not a full coverage approach to foundation I use an elf glo setting over it in winter . It’s light weight and the SPF was what I was looking for!
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Reviewed in the United States on May 8, 2026
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Jennifer M
Battle Creek, US
★★★★★ 5
Expensive, but a good product!
Color: Fair
Love this product. Comes out of the tube white but changes color as you apply. I find you do need moisturizer on your face to get a smoother application - I tend to mix it with my moisturizer before applying and it works well. Am currently on my 3rd tube of the stuff. A bit pricey, but for my skin it sits better than most other products I've tried and doesn't make me break out or look shiny.
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Reviewed in the United States on May 31, 2026

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