We live off grid and have 5 x 8500btu Daikin units, they can only cool
Price in Thailand $400
SEER of 23. Something, not bad at all
Also de reason to get smaller units as the bigger ones where hardly scratching the 20 rating (4-5 years ago)
Two in the living room, bedrooms, hobby room.
Insulation of a house will determine how much BTU you need.
8500 BTU on 32m2 room was enough to cool at +42c down to 26c..
For our good insulated house.
Yours...
Don't know.
As many have stated, multiple smaller units are cheaper to buy, easy to install, and have higher efficiency per unit.
Besides this, you don't need to turn them all on
Installation is simple.
You don't need expensive HVAC installer.
Will made a great video about it.
And it really is that simple.
Tips:
- use nylog or loctite blue
- absolutely vacuum pump and vacuum test. (If you didn't make a good tight connection with the flares, the vacuum test will show)
- let the vacuum pump run at least 15 minutes, close the valves, stop the pump and wait 30 minutes to see if the vacuum drops.
- when all is OK, the line staying vacuum, open the large tube first.
If you would do the small tube first, you drain the compressor from refrigerant oil.
Not a really huge problem, it won't break, but it's better to have all parts lubricated
Vacuum pump, $100 bucks, money well spend.
If you hang the outdoor unit on a wall...
It will make vibration noises.
Depending on your house, that can be a lot (!!)
When on a concrete slab, use some rubber dampening feet.
As long as you don't need to extend tubes, brazing and such..
Absolutely easy.
If you do need to extend..
Study a lot on YT.
CO2 and silver solder. Regular solder isn't strong enough for R32
And without CO2 you get gunk in the lines that will kill your system in a few years. (Or months)
I was surprised "is this all there is to it?"
That easy