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Question DetailsAsked on 12/4/2017

How can I connect a portable AC to the roof unit and drain it using a water pump?

I live in a condo in Tampa and can not run it outside the building. I am on a 2nd/3 stores building.

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OK - is your name Rube Goldberg ?

I won't ask why you need a portable A/C unit if you already have central air (the roof mounted unit, I presume is for central air ?). And would condo management even let you run your unit discharge to their unit's drain - that seems unlikely to me.


If you cannot get away with putting it near the porch/balcony door (assuming you have such) and run a clear plastic tube out there to drain it off the corner of the balcony, here are a couple of other alternatives, but given the low and intermittent amount of water, not to mention hose freezing issues if you ever get freezing conditions in your area:


1) elevate enough to run discharge tubing through window or through hole between window frame and rough opening framing, hanging clear of the building (to minimize drip marking though some will occur in windy conditions)


2) elevate and run drain tube to a bucket or tub that is more than big enough for the most humid hot day's water accumulation and you empty it daily


3) mount on kitchen or laundry room counter (paying attention to any required air clearances) and drain to laundry tub or to washer discharge drain standpipe (but do NOT block the existing air space around washer discharge hose - leave that airgap free).


4) normal method - if you have any floor drains - put near there and run tubing to floor drain


5) bite the bullet and have a plumber install a drain line to an existing DWV drain pipe, UPSTREAM of a trap (to avoid sewer gas infiltration).

Answered 11 months ago by LCD




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