Running a heater in my fridge

[michaelandrews]

So I have a fridge that I keep a keg in, in my garage. I have a temperature regulator that runs power to a small space heater to keep it above freezing in the winter. Now what I've done in the past is just drilled a hole in the side, ran my thermometer and power cord through that, and sealed it with spray foam.
However, I'd like to avoid drilling a hole in the side if at all possible. Any ideas on how I could still run the thermometer and power into the fridge, without drilling a hole in the side?

 

[day_trippr]

Does the fridge have a drain plug?

Cheers!

 

[Rockn_M]

There should a drain plug, check near the condenser or condenser fan.

 

[SC_Ryan]

my chest freezer door seals just fine around the power cord to my heater.

 

[lhommedieu]

I've fermented in chest freezers and refrigerators. The rigid foam insulation around the door seals adequately as long as my temperature probe cord and "light bulb in a can" heater cord are not too thick.

This winter after the temperature drops in the garage I'm going to try just using the heating element in a broken fridge that I bought via Craigslist for $20. Turns out the guy that I bought it from is research scientist who does research on yeast, amount other things, lol.

It should be easy to ferment lagers in an insulated box in a cold room with just a temperature probe, heating element, and STC-1000.