Future is hard to say.
Currently r32 cost more than r410a per tank

Service when not cold. Service when noisy.
Clean the air filter on your own. Interval depends on your usage and how dirty the air is.

If use often just check once a month, if dirty, clean it.
As for cleaning the indoor cooling coil, can use those aircon cleaner foam stuff maybe every 6 months if dirty or airflow reduction. Can diy easily.

Outdoor unit usually self cleans if exposed to rain.

Depends on the aircon power draw

13 amp socket. 2.5mmsq wire.

No such thing as inverter or non inverter piping.

As far as I know none.

Even if have it is just crappy ionizer thing which I don’t consider as air purifying.

To be real air purifier, needs hepa filter as a bare minimum.

Aircon filter will not have hepa filter because they cost a lot and clog up too quick.

Get a aircon technician or installer to have a look at the pipe diameter and pipe thickness.

Again, no such thing as inverter or non inverter piping. R410a and r32 have the same operation pressure and hence, same piping requirement, regardless of whether inverter or not.

650?

Change aircon

If within the piping length usually unnecessary.
If old pipes or pipe from previous aircon then yes, need test.

All the connections at indoor and outdoor unit that connect to the pipes need to do soap water test for leaks.

Take filter out and wash.
Take a spray gun and. Spray water the cross fan.
Done.

1. Watch you tube video.
2. Prepare a huge plastic cover.
3. Try to use the plastic somehow to hang and direct waste water to a pail. Or if you can find some plastic cover dedicated for aircon cleaning then even better.
4. Hook up water tubing with a garden spray to the indoor unit.
5. Off aircon.
6. Get a ladder or chair and get close to th blower or cross fan.
7. Spray. You should see the cross fan spinning as you spray and lots of black water coming out. Spray left and right. Avoid water going to the pcb, usually covered on the right top corner of indoor unit.

And since you already take so much time and effort setting up, might as well spray water over the evaporator coil( the coil behind the filter). Spray until no more black water come out.

And stand by lots of towels to mop up water that goes to places you don’t want them to go to.

of course not

No.

Picture

just hack the wall......then everything can move.

looks like a simple back to back setup only......

Depends on the condition of the aircon.
Also.... inverter aircon got signal cable to communicate with indoor unit...so need to make sure the indoor unit can communicate properly with outdoor unit and having the same brand, capacity and model might be important.

1. Check compressor working or not
2. Check gas pressure if compressor working

If low, check for leak, repair leak and refill gas.

today york is oem by haier

hisense has bad design too.

the drainage from the horizontal upper part of the coil goes behind the unit and through a small hole to go to the front catch pan then to drain pipe.

the small hole tend to get block easily. so very easy to leak water from the back. even after cleaning coil and remove blockage from drain pipe also will leak in no time if the aircon guy don't know about the aircon design.

and i doubt aircon guy will bother to dismantle the whole aircon just to access some hole behind the aircon

No idea.

No experience with hitachi ac