unheard

A balancing act or priorities. Costs over conveniences.

Oh, I see. So you use them like regular bulbs then?? You said that you got WiFi bulbs for the purpose of controlling them from the phone and on schedule? Do you keep the bulbs on a "hybrid" schedule? By cutting their juice off during the day, and then flipping the physical switch on in the evening to let them function according to the night time schedule?

Then you don't really know what's their standby power consumption. Unless you test them with a specialized tool. A cheapo watt meter won't cut it. You've mentioned that you turn your bulbs off during the daytime.. Why would it matter as in reference to the standby power consumption metric?

How long ago and for how many sq.m.? Did you mean insulating the ceiling? The only thing for sure is that today's prices would be significantly higher.

Let's get real here. The OP is not building a new house! There are lots of suggestions mentioned in this thread that will require a major capital investment. Just to save a few baht on the already small electrical bill?

"The one air conditioning unit is only used for a short time before going to sleep and does not run all night or during the day time." @Custard boy Make sure to keep your A/C components free of dust, both inside and outside units.

My previous quote was referring to the maximum allowable under the Energy Star Logo spec. The U.S. and Canada sold LEDs tend to be of the highest available quality products currently on the market. Your particular samples can consume much more than the allowable maximum of 0.5 W. What's is your brand?

The results showed that the standby power consumption of 21 Smart LED bulb models (out of 30) was less than 0.5 W, which resembles the maximum allowable standby power consumption amount of a smart LED bulb, if the manufacturers intend to carry the Energy Star logo on their product. https://www.sciencedirect.com/science/article/abs/pii/S0378778818333838

The tricky part is the WiFi LED bulb stand by consumption, with published numbers around 0.5 W per device.

Their report is very comprehensive. They test for the following: pH, Turbidity, Color, Total Hardness, Chloride, Total Iron, Manganese, Nitrate, Sulfate, Total Dissolved Solids, Arsenic, Cadmium, Copper, Lead, Mercury, Selenium, Zinc, Cyanide, Fluoride, Non Carbonate Hardness, Standard Plate Count, Coliform Bacteria, E. coli

I'd think they regularly test bigger cities municipal water supplies. But even there water can and does get contaminated via dirty, broken supply pipes.

You're absolutely correct. The only way to know for sure if your drinking water is safe to drink is to pay for a comprehensive lab water test. Besides, only Reverse Osmosis removes every kind of impurity out of water. Also, without the test you will not know if your water is loaded with some nasty mineral like Fluoride (not uncommon, especially in the Northern Thailand), since it has no smell or taste and might take years to show up as a problem.

Does it mean that water quality is good and consistent throughout Thailand???

It's much more complex than that. Here's a good site to check: https://soundproofcentral.com/sound-deadening-materials/

You can always find exceptions to the rule. But as with everything else, you get what you pay for. Besides, 900K would buy a lot more of a house in 2009, compared to today.

Sure, but here's not farangland. Walls in faranglands are normally of the load bearing structural design, as opposed to frame bearing in Thailand. That's the main reason for the differences in wall construction.

And what is the right way? The pictures show the standard way for Thailand.

Again, there's nothing in the pictures to suggest that the builder has been cutting any corners. The builder has been contracted to erect Thai standard walls. This is exactly what the builder has done!

I'd say it depends on the thickness of the Q-con brick.

Rather on the amount of money you want to spend building your house, all other things being equal.

Looks to be 7.5 cm

@freedomnow Yes, it's the standard and cheapest method of wall construction in Thailand. Any deviation from this default will add to the price. The pictured brick walls will be covered in thick render, on both sides. There's nothing awful about that - most Thai houses are built that way.

How do you use evaporative cooling in your house?

But it's not up to the architect to design an energy efficient house if the client has no interest in being efficient.

Inside the window curtains sandwiched between glass pains? Those are great if the budget allows for expensive double pane windows Solar panels do shade the roof but can also create additional weak spots for leaking.