Anyone know where to get good price for aircond in Shah Alam or its vicinity? I’m buying 7 units so i was hoping to get extra discount.

If rm100 per unit less, i would save 7 x RM100. That’s a lot for someone on budget like me.

That’s why I am trying to limit shah alam & vicinity that i don’t have to travel far. But if i could get rm100 less for each unit, i could save a lot for 7 units. Just like last week i traveled to publika and save close to 1k for 3 major kitchen appliances (compare to best internet price). Worth the trip.

Not really confident buying 7 large appliances from lazada unless it is from official store. Still prefer physical store but with online price.

It’s not that i doubt the seller. But i am not so confident of how logistic people handle the air-conditioner. At least physical shop will have their own people to deliver and you can complaint directly to them if there is damage to the item delivered.

And yeah i bought plenty of things online including recently my RM1,111 built in microwave oven. But buying item like aircond online is different level.

I’m comparing the two same brand albeit different model. Mitsubishi 2+7 years warranty looks tempting. But I like panasonic design better and its advertised EER & noise level are also better.

But people says it’s easier to clean the mitsubishi indoor unit.

Any experience using panasonic? I prefer panasonic just because of the elongated design instead of the typical squarish indoor unit. Since I have no experience using both Panasonic & Mitsubishi, I very much rely on the advertised specs/info and info I gather from the internet. My current rented place I bought cheapest acson since I never plan to take the unit with me when I move out.

Dripping at which section? I would not fault the aircond itself for dripping because most of the time dripping happened because of poor installation or maintenance.

Dripping indoor unit isn’t really something uncommon. Like I said, probably due to poor maintenance. The usual suspect would be algae or mold. Thorough cleaning would most likely solve the problem.

When you guys install aircond, do you guys specify the thickness of copper tube & insulations, the route of copper tube & drain pipes & the location of outdoor compressors? Or you guys just leave it to the installer?

And for copper piping at external wall to the compressor, does your installer put it in some kind of casing or let it bare?

I saw Inaba Denko pamphlet. It says that the paircoil is only recommended for exposed trunking installation, and if we want to use for conceal installation, we need to use thicker neocoil. Most of discussion about insulation thickness in the internet doesn't tell much about method of copper tubing installation. Is it safe to use paircoil for conceal installation? Any condensation issue?

Can you give some advise on below questions too..

Thanks.

What are the things you normally specify?

What is the recommended copper thickness?

What is the recommended insulation thickness for ceiling conceal?

Do aircond installer normally use PVC trunking for ceiling conceal?

Where do you normally drain the water? Make a connection to the rainwater drain pipe? extend the pipe downwards to drain?

Thanks

When engineers design HVAC system for commercial buildings, we aim the temperature to be at 25.5oC. So it is normal for you to set your airconditioner in the range of 24-26oC. If you need to set lower than that to be comfortable, then most likely your aircond is undersized or you have thick skin or high metabolism.

Problem with setting the temperature at 24-26oC is that the compressor keep kicking on and off which is why the capacitor always spoil in non inverter air conditioner. So if you prefer that range of temperature, better buy inverter air conditioner.

Sorry. I can't help you with that. I can only answer theoretical question.

I am here looking for answers for costing too.. for everything related to house renovation as I am doing budgeting for my own renovation.

For those buying 1.0hp air conditioner, how big is your room size?

And when you size the air conditioner, do you calculate based on heat load at night or during the day? If considering usage most likely we would only be using them at night, except for weekends and on the days I WFH, so, do you guys suggest I "undersized" or "oversize" my air conditioner.

If I oversize, that would be additional 3-400 per unit x 6

Most of my rooms are about that size except for master bedroom. I guess it should be fine for me to install 1.0hp in those room and 1.5hp in Master. Afterall, most of us only set the temperature at 25-26oC.

This post has been edited by blanket84: Jun 15 2020, 10:10 PM

May I know where do you get this calculation? I want to read the reasoning behind the numbers.

I don’t want to go to the extreme and calculate the thermal envelope

Yes, if you want your air conditioner to perform as advertise. Otherwise no point buying 5 stars rated air conditioner

Yeah. Really sampah job. Such an eye sore. I am always worried that I would get this kind of installer. Which is why I plan to specify everything I want, including the routing, materials brand and the finishing (outdoor trunking, drain pipes routing & etc).

Actually Haier also not bad. The current house I am renting is using Haier aircond in Master Bedroom. It has been almost 12 years since the aircond was installed ( I have stayed here for 8 years) and it gives me no problem except once that only need capacitor replacement, which is a typical breakdown for non-inverter aircond.

I guess those manufacturer realized that making durable thing is not the right way to do business. Durable=less sales over time

You must be kidding me.

Never service as in never do chemical cleaning or never service as in never even clean the filter?

If the former still okay..but the later.. wow