Identifying Replacement Thermistor for Heat Pump Water Heater Using Resistance Data

I have a heat pump water heater and the manufacturer has gone out of business. One of the thermistors in the system has failed. Fortunately there are TWO of these in the system and I have been able to test them with an ohmmeter at different temperatures. I'm trying to find a replacement.

Resistance was tested on a multimeter in the k Ohms setting as
32.1 @ 3 degrees Fahrenheit
14.0 @ 32 degrees Fahrenheit
5.14 @ 75 degrees Fahrenheit (ambient air)
3.62 @ 93 degrees Fahrenheit

It looks like this for what it's worth:
http://www.ebay.com/itm/252004457599

Can anyone help me identify what the actual thermistor I need to buy is based on these measurements?
Thank you!

Hi,

Have you tried checking "Digi-Key("")":http://www.digikey.com/product-search/en/sensors-transducers/thermistors-ntc/1966148?k=thermistor

Based from the information you have given, its quite difficult to find this time of thermistor, but just give it a try.

Cheers