Looking at this project again.
Purchased a new popcorn maker (same model) and took some more measurements.

Heater

Red and White (ground) wires
113 Volt AC
0.134 Amp AC

Black and White (ground) wires 
20 Volt AC

Black and Red wires
94 Volts AC
0.111 Amps AC


Fan Motor

17 Volts DC
0.018 Amps DC

We have established this would be great for the temperature sensor (thermistor):

https://www.digikey.com/product-detail/en/littelfuse-inc/503JG1K/615-1143-ND/5230977

Fan motor controller: 
IRF510N IRF510 Power MOSFET N-Channel 5.6A 100V
Heater controller:
Needs to be a solid state relay.

If my digikey searching is accurate, this seems to be the cheapest that accepts 
113V

https://www.digikey.com/product-detail/en/sensata-crydom/CX240A5/CC1332-ND/555039

Would that work?

Thanks
Craig
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