Bro, don't misunderstand but night time temp at what humidity outside vs in the room whose walls are already storing heat and re-radiating it into the interior is what needs to be considered. I slept with a table or stand fan for over 30 years and even on cool nights outside, the heated air and humidity in the room prevents cold air from coming in. It's like an oven. Different story if house shaded by trees and have running brook that cools the night air. Places like this the sun light hardly hit the ground there's little or no excess stored heat. Humidity different story.

Edit: Insulating bad idea if heat is not removed. That comes from residual heat (no insulation is 100%) building up over time. That means the convective hot air needs to be evacuated. That's why combining a good radiant barrier (that would not lose its reflective properties) with a turbine ventilator is the proper way. If still too hot then it's orientation and surface shading has to be considered. That's why they say plant a tree.

This post has been edited by halcyon27: May 12 2014, 10:10 PM

For natural air to come in, you need to have openings, from front room to rear room. If just 1 room with 1 window opened, sure air won't able to comes in.
Overall height of wall, quality of red bricks and roof tiles also play an important role on heat removing. Installing plaster ceiling that bring the height lower are a good way to prevent proper ventilation.
Does older house comes with insulated ceiling or roof? But why they are still cooling?
Humidity in malaysia maintained high at all time and never been changed since 20-30 years ago. What has change is developer reduce the cost of building and using low quality materials. Not to mention green house effect.

anyone using the new model samsung triangle shaped air conditioner? how is the performance?

You install lah.. Later can feedback us

What is the price range for 1hp ME inverter (with installation) currently?

The conclusion of the matter is that humidity is the main problem here - too much or too high of it heat cannot dissipate very well be it man, animal or machine. Some weather sites like Accuweather describe it as RealFeel - ground ambient could be X but with Y humidity it feels like Z. So aircon still has its uses to cool and dehumidify. The art is in adjusting it not too cold and too dry as how many of us abuse it esp without knowing the ramifications for children. For that 28 deg and 1 speed ceiling fan is more than adequate even for an infant in fleece blanket. Since they don't sleep outside where it's much colder and would risk exposure to the elements and mosquito but their rooms bake throughout the night until 3-4AM, AC does the job nicely.

Older houses needed to be considered in the context of what are the surroundings. Does the occupant grow trees or have a garden? That slows the heat accumulated compared to bare concrete or totally non-gardened dwellings. But it would be folly to think that the physics of heat mass would act differently from clime to clime in relation with humidity. Brick does very well in hot day and very cold nights in a low to mildly humid clime. The heat retained is re-radiated to the benefit of the occupants in the night. But simply not here where humidity is high. It can't dissipate effectively enough until after 3am. Anytime between that an AC helps dehumidify and extract the oven like heat.

Cross-ventilation has its purposes and is good practice to use in this climate. Your description of how it works actually only works with wind and possibly louvered windows (best air inflitration performance from any wind direction) if the air inside the house is cooler. I use that with extractor fans, turbine ventilators. I used it to its maximum advantage during rainy season but not when it's blistering hot - that's where the urban heat island effect phenomena comes into play. But all's not lost since the best time to use it is early in the morning like 4-5am when they are timed to turn on until 7am - brings the cool in and it stays cool until 2PM.

Also, placement of rooms in relation to surroundings should decide if the occupant wants to breathe clean forest refreshed air or street air. I heartily agree with your assessment if their room faces green lungs like FRIM, etc. Unfortunately for my kids, the latter is their situation so it's case by case. For such a Medklinn and a Sharp Plasmacluster (inverter) helps in this situation.

Humidity are not a problem, higher are better for our body in some sense.
Maybe heat removal are poor, but at least our body are wet. When humidity are low, we may need to apply chemicals to stay wet, is this good for long term? I don't know. But considering we are wasting more money on visiting hospital and clinic, it is wrong already.

Today while i was shopping around for appliances, i found the shop seller start pushing Hitachi & Mitsubishi instead of Panasonic for both inverter / normal. (as they claim Panasonic no cold enuf - low in btu etc)

For the basic normal unit, they are all suggesting either midea or haier for me.

How is your guy comments?
I have conceal those piping means for Panasonic inverter setup.

Well, you won't be wrong too much with Mitsubishi or Hitachi.
But the sellers usually will push the brands that has more profit for them
Cooling efficiency are not based on those numbers, your room condition that matters.
Like my room, if Jan to May I need 3 hours to cool the room down, June to December I need 2 hours to cool it down. Just because of my room wall exposed to sunlight lesser.

I have one side of wall is expose to afternoon sun, i did the ceiling insulation + windows Tint.

Now coming to Air Cond. Any shop that usually provide good pricing?
Target to get during this festival session.

Just jump into this thread, everyday listen to FM tell me buy YORK. Alright other than YORK, any other good recommendation?

Guys, planning to install and aircond in my hall but am having some problem with the placement of the unit

According to an electrician, he needs to pull the wire from the electrical box which is near my entrance, while the compressor needs to be at the balcony which is at the other end (living in an apartment btw)

My question is, wherei is the best place to locate the aircond?
And with the electrical box and compressor so far apart, will there be alot of exposed wires or pipings and how do i conceal them?

2-3 hours to cool down the room?

I think the time taken is too long or perhaps your aircond is under power.

I on air cond together with a fan.
And now the sun is direct to my wall, so sure it will take longer.
Without on the fan, I only need 1 hour.

dont ever buy the Panasonic non inverter. Inverter maybe other forumer may provide you feedback.

Any reason on this?
I've been using the non inverter for 8 years and still working fine

Sudah lah.. Panasonic older model still under masushita.
Now under panasonic malaysia.

QC wise for local used only, if exported model totally different.

Last weekend when to my area aircond shop asked the boss, lucky he still got last unit ME GE inverter model price for 1hp include install bracket = Rm1570.

Quite reasonable for replace my rear room, just kong for around 5++ yrs usage of hitachi 1hp inverter model.

I guess is outdoor PCB failure, after repair wiring cable can last within 1 yr and no more power again.

I am using panasonic inverter:
http://www.panasonic.com/my/consumer/home-.../cs-s13pkh.html

http://www.panasonic.com/my/consumer/home-.../cs-s24pkh.html

Start giving me "tak tak tak" sounds after 7 months using it even the swing i fix it static and no move (looks like the sound doesn't come from the swing).
anyone with this model got this problem?

This post has been edited by sovietmah: May 27 2014, 12:06 PM

Bro, advise you direct log in ask Panasonic.