All air-cond are susceptible to water leaking after sometimes especially due to dirt clogging.

Blower flurry is very norm.

From experience,
It depended on your environment.

My house living area air-cond's blower is always full of "fur" every 2-3 months time, as living area got window and exposed to roadside.
While in the room air-cond which window is not facing the major road, (side), the blower still clean after 6 months.

Jelly dripping, fungus grow inside, means water drainage is not good enough.
Some installers installed not tilt enough to let the water flow nicely, a experienced installers should use the water level to adjust and air-cond is not supposed to be installed too "horizontal:
Also, it can be due to dirt clogging the drainage.

Normally if not cold, potential of leak, piping issue as well, can lead to the issue.

Over the year of buying so many air-cond, I find that installation may be as important as well.
I had several times, come across wrongly installed air-con, in term of position of the compressor that is improper,
the blower unit doesn't proper align/tilt causing clogged in water draining issue,
and sadly to say nowadays, it is very common mistake.

I had bought 5 Panasonic over the this few years time, I find little issue in general, one 1.5hp one, due to improper position, blower clogged with water almost 2-3 months once, and compressor is damn dirty due to location wise issue.
Another has some shaking sound whenever start, after few months using, when cleaning time, only found the screw mounting is not properly screwed by the installer!

This post has been edited by cherroy: Jan 9 2012, 04:54 PM

woohoo, using inverter can result bill from RM100 to Rm30, this is first time I heard.

Even inverter air-cond manufacturers don't dare to claim it...

By your analogy (RM100 to RM30), before you switched into inverter, your bill must be > RM500.

What so special about RM200?
An office with all non-inverter air-cond on 2 rooms x 1hp power for 9 hours + 1.5hp on room for 6 days a week for 3~4 hours average, also registered less than RM200.

LOL, office is using phase 3 current or not is totally unrelated, air-cond only using 1 phase only, disregard you have 3 phase or not.

Also, 3 phase or 1 phase, you paid the same KWhr.

LOL switch on 8 hour x days per month can cost Rm150?

Count down and up also cannot achieve.

2 HP air-cond how many KW needed.

Even assume the air-cond running non-stop , gave extra to you with (4KW)
4 KW x 8 x 3 = 96KWhr only.
Assume tariff at 0.40 cents

96KWhr x 0.40 cents = Rm38.40 only, this is figure that for compressor running non-stop in the entire operation period, (as non-inverter aid-cond compressor does stop once reaching desired temp)
where is the RM150.

Fyi, 1HP = 0.75KW.

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Added on February 7, 2012, 5:59 pmSurely cannot explain so much, because it defy the physics of electricity.

This post has been edited by cherroy: Feb 7 2012, 05:59 PM

There are a lot of factors need to take into consideration.

The room, heat transfer issue, surrounding (aka tight or not the air transfer), still play a major important part.
Non-inverter got a sensor to detect the temp, if the sensor fail to detect the pre-set temperature due to more heat being transfer into the room, it will result the compressor running non-stop.
Position of the blower also play another major important role, if the blower is located near ceiling (ceiling is hotter), it will result the sensor keep on detect warm air, and won't tell the compressor to stop working.
Also cleaningness of the blower, efficiency of the compressor, BTU (the non-inverter and inverter at the same hp, different model, may result in different BTU).

For direct comparison or to investigate the actual saving, one needs to eliminate the variation of room condition as mentioned.

Yes, Inverter does save electricity, but it depends on how the usage.
Inverter saving current used come from ability to run the compressor at slower load, instead of start-stop-start-stop in non-inverter.
It doesn't save you any current if they have to run non-stop or 100% load.
Inverter doesn't give you more "cold", the basic of cooling air output is as same as non-inverter.
Inverter mostly uses different gas R410a, instead of R22, and run at higher pressure.

Inverter does save you in turn of ROI if being used in proper way (aka the room can achieved the pre-set temperature), and being used continously long hour, but not up to extreme to 70%.

The answer is no.

My personal preference/experience, come from front wall is preferred.

Ease of installation, cleaning, repairing work.
Never put air-cond on top of TV, or big TV cabinet, not only troublesome of cleaning and repairing, also risk of water dripping (if) into electrical point/component.

You need to understand how inverter works in the first place.

Inverter /= save electricity.

It saves electricity in the form that it can vary the compressor spend to accommodate the temp set, (running a slower speed) instead on (100% running) and off (0% running) for ordinary air-cond.

If always use the full blown basic, you won't get saving of electricity by using inverter.

You need to know why Pana required special hose, and more expensive gas refill.

Pana is using newer gas R-410A which is more eco-friendly, and work in higher pressure than older gas of R-22 (which is expected to be phase out in years to come)

It is nice design/layout on paper.

But once air-cond getting old time, the position may cause hassle in term of leaking water (when drain pipe clogged with dust, quite common), want to to maintenance time or cleaning time, that TV set may be blocking the passage etc.
Not to mention the danger of leaking water drop into TV/electrical items.

From own experience and preference, I never want install air-cond above TV set in living and on top of bed.

Wow, I do not know that millions of non-inverter air-cond (R22) are vibrating out there, and using inverter R410a can solve the vibrating issue.

Strange, I never heard inverter air-cond manufacturers claim, using inverter can solve non-inverter compressor vibrating issue...

So far, I only heard R410 being operated at higher pressure, and better cooling effect (due to high pressure operating) and a more "green" gas.
May be I too outdated?

This post has been edited by cherroy: Oct 13 2013, 06:27 PM

Installation work is still the same. Just the pipe and wiring already in place.

Everyone usage and preference is different.
There is no right and wrong in this kind of matter.

As said before, if the air-cond is leave full blown most of the time, be it poor insulated or want to have lower temperature one, the saving of inverter may not significant.

Also, there are many offices, houses are with concealed piping, hacked wall just to have inverter?
The cost is not solely about the difference between inverter air-cond vs non-inverter, but also piping and renovation cost involved.

Many new house/apartment come with pre-built concealed piping. So if want to use inverter (mostly with R410a), then need another cost to hack it away, cement back and painting again.

Inverter compressor is running with DC (AC current being converted to DC) that has ability to have variable speed control as compared on and off (0% or 100%) with non-inverter.

The saving of electricity come from ability to run at low speed according to the need of cooling temperature set, instead of full blast in non-inverter.
So if/when inverter is running at full speed the need of electricity is identical to non-inverter.

Either the air-cond is not effficient (blower clogged with fur hence reduction in airflow, quite normal happen), or something wrong with the air-cond or room itself not properly closed/insulated etc reason.

For non-inverter
Temperature setting on the remote control, is for the compressor to shut down when achieved the temp.
There is a thermo-sensor to detect the air-temperature inside/around the blower.

So whether you set 22 or 25, it makes little different. If the temperature is not reached 22/25, the compressor will be running 100%, be it you set it 18,20, or 26, if the temperature of room air is not reaching there.
Compressor will only stop running when the thermo-sensor sense the temperature of the air drop to the set temperature in the remote control.

While for inverter.
It is still the same working mechanism, except when the compressor can be running at 50%, if the air temperature start dropping to near the set temperature.

Eg. when room air is 30, while setting of remote is 25, the compressor running at full speed to cool the air.
But when it senses the room temperature become 27 already, then compressor slowdown to 50%,
when it senses become 26, the compressor slowdown to 20%.

This is how inverter can save electricity.

Drain pipe just for the water to flow out, why need to insulate?

The water is so little, drop by drop only, hardly can fill up the entire 1/2 inch PVC pipe.
By the time it reach PVC pipe, the "cold" already turn to warm.
It is not a freezing water as well.

The wall may wet only if the PVC broken.

Hot air won't travel down, but it is advisable to seal it up with plaster board, MDF board or whatever or make into something that can have option to switch open/close the ventilator.
As your cold air will also "travel" into the hole (once the whole room being cooled down by air-cond), which means waste electricity only.

Air-cond room or air-cond has better saving in a relative close environment, as air-cond blower generally install at near the top of the room (and having sensor to sense the temperature), so if there is place that cold air can escape from the room, means it takes longer time to achieve the temperature set at remote control, hence more electricity may be wasted.

It has some truth.

As large area without proper insulation means the area may hard to achieve the pre-set temperature in the remote control. (if one set at 18~22).
As in this situation, both inverter and non-inverter also need to run a full blast condition, aka 100% motor running.

At 100% running, the difference between inverter and non-inverter won't be too significant.