Ventilation Dilema.

[sleeman]

The cabinet is nearing completion, and I am still trying to figure out the best way to ventilate the heat. I have several options as the cabinet is built into the wall. The one thing I don't want to do is vent it out the front of the cabinet because of aesthetic reasons. I have attached a picture as well. I have two 110v 4 inch fans. I plan on running one across the halides, and the other to vent the hot air out of the cabinet. My original idea was to put in a dryer vent at the top and vent the air outside, but at -30C there will be a lot of cold air flowing back in at night when the lights and fans are off. My next idea is to mount the fan up high to a 4" solid vent and run it down through the floor into the boiler room below in the winter. Because the tank is sitting in a knock out in the house I could drill a 4" hole out the bottom and vent outside in the summer. This way I can put a couple 2" holes in the floor and draw cool air up into the tank area from the basement. Any other suggestions would be greatly appreciated. Other than to go buy a chiller.

Here is the piture of the tank so far.