I know this doesn't fit your description but at $10 I don't think you could go wrong.
I've carried this light almost daily for 3 years, still running strong and I'm ordering a couple of more with them being this cheap.
https://wurkkos.com/products/wk03?VariantsId=12517
Bloxygen does the same thing and you don't have to keep a bottle of argon around.
https://www.amazon.com/Bloxygen-Preserver-Portable-Preservation-Chemicals/dp/B01N4IL6T3?tag=atomicindus08-20
I was coming to make this exact statement.
I've got one mounted to my shop for our bonus room and one on a pad. You will certainly be able to hear that outdoor unit running.
I've been following along as you and Jeepxj have discussed these over the past several months, you guys are awesome.
Thanks for the offer on the spreadsheet! I'll very likely hit you up when I get started!
I have humps in my floor from where the trucks dumped and valleys in between. Sometimes a 1/2" difference over 10' or so. I wouldve like to have seen 3/16* or less but I didn't specify (or know to). Sure I could fix the peaks but it's hard to when it's full of junk lol
Hardly any snow in...
My biggest regrets in my 30x40 build...
-I didn't specify flatness on my floor. It's not flat at all.
-too many windows
I did run a 20amp 120v circuit along each wall.
The PO cut the trusses to install the attic ladder in our house.
I spoke with a structural engineer and there are ways to frame a diaphragm of plywood around the penetration.
I haven't gotten a stamped plan from him but have installed ply around the opening.
Find a local residential...