Discussion/opinions on fridge fan location - Roof mount vs cooling fins mount?

[RandK-M]

I scored a great deal on the parts for the Titan TTC-SC22(B) speed and thermostatically controlled refrigerator vent fan and I'm looking for opinions on the best mounting location.

Right now I'm leaning towards mounting the fans on or under the screen under the roof vent cover. I'm thinking it would pull more air that way like a house roof vent. Instead of turbulence, any air through the fan would have to go straight out the vent.

I've also seen on here that a lot of people mount them just above or below the coils behind the fridge pointing up. I'm not sure if that's better or done just because it's easier than the roof. That location does seem like it would put good air movement right on the coils.

A 3rd option is the the basic installation Titan Fans uses in the manual which is right on the inside of the fridge outside access cover sucking outside air in through the access cover vents and blowing right on the back of the fridge. Seems like the worst choice to me.

So to make it easy, the fan mount choices are:

A. At the roof vent.

B. Above or below the coils pointing up towards the roof vent. If this is the best, is it better above or below the coils?

C. Titans default mount on the inside of the access cover pointing straight in.

Ray

[TitanMike]

I personally chose to use my Titan Fans as exhaust fans on top so there was no chance heat and combustion gases from propane burner could be forced inside through any possible gaps.

Works great this way. Also easier to mount and IMO more sturdy than trying to hang in the coils or on the outside vent door.

When hot air is exhausted, cool air flows in below. Flows nicely across the condenser/evaporator coils with pretty much no difference.

[RandK-M]

The propane and combustion gasses are something I hadn't thought of. Makes a lot of sense, thanks!

Ray