I'm fitting a portable AC into my workshop to take the edge off summer temperatures. For convenience, to make sure it works before bashing a hole in a brick wall, and to confirm it will help, I am temporarily piping the outlet to a pre-existing soffit vent.
The AC unit has some 150mm (6 inch) hose built in, but its odd. The twist is "left hand thread" and that's how it twists onto the unit. This hose is also quite stiff, and clicks between "expanded" and "compressed" Seems to be made of a stiff white plastic.
I can buy "right hand thread" hose but the wire support doesn't connect to the unit because the thread is backward. This hose comes in two materials, an aluminium (aluminum) foil with quite wide thread spacing, and a soft PVC plastic that is very floppy.
Diameter is not an issue, its the material and the twist that are different.
The air temperature of the exhaust is around 35 degrees C according to my IR gauge. So I wonder if the PVC plastic is up to this.
I see there are insulated ducts available too.
What ducting do I need for my portable AC? Looking for some names or keywords.
The existing pipe is absolutely a spiral hose. It has a positive click feel, like a bendy straw (but those aren't spiral)
Best Answer
We have a portable AC as well. Since the original pipe was too short, the only way to run the exhaust was to swap it out for the piping you have pictured at the top. It stretched over the original terminations at the AC unit and the window just fine. I held in place with duct tape. The pipe I used was 15' long compared to the original 6' pipe like you have. I was concerned about an increase in static pressure and how the unit would perform, but it did work very well on cooling the part of the house we needed with no issue.
"Threading" it on was not an issue, it was just pulled straight on and brought a wire or 2 over the nibs that acted as threads for the original pipe.