You should consider putting the chiller outside, have your GC built you a vented enclosure to keep it out of sun and rain while you have them there. Pumping the heat taken out of the tank into the garage is not efficient at all.
You will need some type of exhaust fan above the tank, otherwise you'll end up with mini rain maker on that ceiling when the air temp and dew point gets close. I would not go with a dehumidifier for a garage space, that sucker will run for hours each time you open the big door.
On the heater, you can go with few rancos or few of these. Have you consider doing maybe three 500W heaters? have them set at .3 deg apart with the controller(s), you'll have the same or better redundancy rate with three heaters. 1,000w heat elements scares me, both the huge power draw and damages it can do when a controller fails.
You will need some type of exhaust fan above the tank, otherwise you'll end up with mini rain maker on that ceiling when the air temp and dew point gets close. I would not go with a dehumidifier for a garage space, that sucker will run for hours each time you open the big door.
On the heater, you can go with few rancos or few of these. Have you consider doing maybe three 500W heaters? have them set at .3 deg apart with the controller(s), you'll have the same or better redundancy rate with three heaters. 1,000w heat elements scares me, both the huge power draw and damages it can do when a controller fails.
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