coolthaihouse.com blog

some thoughts from Dozer
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A/C Mini Primer

feedback from Ian H

You have done a marvelous job on both the site and the house. I know you must really be enjoying it now.

Since I plan to build there in two years I have found the information you provided to be invaluable and will be sure to share anything I can with you and the people who visit your site at that time.

image dsc20254.jpgNo where have I found any mention of Air Conditioning. I assume you are going to use window units where required. I also noticed that you stated that you must have 45 Amp Electrical service. Is this enough to run the Air Conditioning?

Thanks again for all your efforts and best of luck with the house.

Ian H

I, dozer, am not the right person to say anything about A/C. I’ve basically lived without it and have adjusted, now being of the school of mind that it really isn’t necessary — if you have convenient fans that work well. I like ceiling fans. That being said, some days can get pretty warm…. On my side of the block here, out of 4 houses the other three have A/C.

So here are some pics of the neighbors’ houses to give you an idea of the basic setup.

image dsc20255.jpgHere is the compressor that is mounted on the outside of the house. Notice in the upper right the insulated copper tubing which runs into the house.

image dsc20256.jpgThis shot shows the copper tubing running into the house.





image dsc20253.jpgThis shot shows the inside unit. This particular unit is mounted in the bedroom.

image dsc20254.jpgThis is a show of a different house with two compressors mounted on the outside wall.

I have never seen central A/C here, although I’m sure someone has it. A/C units can be purchased from between about 12,000 baht on the low side up to about 30,000 or more. 45 Amp is sufficient as the houses in these shots are 45 Amp. The number of Amps is determined by the meter installed by the electric company and 45 Amp is the standard, around this area anyway.

Do you have more details on A/C – please either comment or do an feedback and I’ll post it as an article……

3 Comments

  1. Hey Dozer,

    Thanks for primer on the A/C. I guess that is one more thing that would have to be included in the plans to create the openings for the A/C units in the rooms in which they are to be installed.

    Ian

  2. Yes, good point (including A/C in the plans). Normally it is not done by the developer and the buyer installs after. However, if you are having the house built, the more detail the plan the better. In any event, the a/c is pretty straight forward to install, whether they need to make the holes in the wall or not.

  3. Hi all

    Ive worked in hot sweaty places most of my life and have experienced some mostly poor instqallations

    Among the worse are the all in one wall units (like a box jutting out of a hole in the wall. They are noisy and inefficient but cheap and nasty. The split unit is much better Most of these are of the swash plate design with little pistons compressing the gas. A better and slightly more expensive type is the screw compressor type (like a meat mincer), they are more efficient. Electric is not cheap in the land of smiles

    You should consider the solar heat gain (see other posting about insulation of walls and roof voids. You poor quality wall can radiate 10′s of kilowatts of heat into your house (as a rule of thumb the solar energy radiated around the equator from a clear sky at midday summertime is around 1kW/m2 – worst case

    Locating the fan unit is very important. You dont want to be blasted with cold air while sitting in your favourite potato couch watch ESPN. In fact I agree with doozer that air con is largely unnecessary in Thighland, however

    I like to have a unit blowing downwards rather than across the ceiling. I have as yet to follow my pet theory of placing the fan unit close to the floor, so that the room fills with cold air, rather than mixing it all up with a ceiling unit – some research needed here into comparative running costs/ noise levels That background fan noise can lead to serious headaches over time when sitting plumbing this article.

    I have experienced central units in the middle east. They can be very large, often mounted on a flat roof terrace (a favoured construction in ME rather than pitched roof). Large ducts 2ft square with ac distributed through the room by ceil airducts (from a suspended ceiling

    They work well and are very quiet with minimal air turbulence

    dont know about costs

    Its the type of unit favoured in the States and they often have combined hot and cold units

    rgds

    \Robin

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