In my neck of the woods it is exceedingly hard to find a dual hose portable air conditioner, a must in running a small scale sealed room.
Also DIY mini-splits are nonexistent in OZ which leaves but one option, converting a single hose portable Air Con to dual hose.
Firstly how does a portable air conditioner work:
Now that we are familiar with how the single hose model works, lets compare it with a Dual hose design
Below is a short video giving some further detail on how air conditioning works and how to convert a single hose portable AC to dual using nothing but a box, some rubber bands and 6″ duct.
I like the design above as it is quick, simple and a cheap solution but if you’re like me and couldn’t bring yourself to work with rubber bands and cardboard (it’s not a long term solution) you can get creative with the intake mounting plate.
I used an aluminium cookie sheet, cut a 6″ hole in the top (for the duct) and used HVAC tape to secure into position.
Below is a few images I found of a similar project, as you can see they are using reflective foam boards as a mounting plate.
The final image shows how they taped over the compressor’s air input this I think is an error on their part but I could be wrong. I question what air is cooling the compressor?
As for amending the design of these units, these images are a perfect example.
Just remember the diagram at the top. You need to be able to circulate the air inside the room and keep the outside air separate.
I’m not a HVAC professional just a DIYer that like to find creative/cost effective solutions.
Hope this help out the DGC
Alby OG Mangels