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 Aircon Discussion V3, Home Appliance

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aurion
post May 2 2018, 12:45 PM

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QUOTE(seancstan @ Apr 30 2018, 07:36 PM)
Any idea if R32 models pipes and connector is compatible with existing that uses old types of gas?
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R22 (old gas if you are referring to) pipings and R410a/R32 pipings are different thickness. The former being thinner in terms of thickness. Both R410a and R32 gas are high pressure gas, the thinner pipings may not be able to withstand the pressure.
aurion
post May 9 2018, 03:43 PM

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For those looking for neat casing and piping options, I've attached a link here for the product. I've been using this brand for the past 15 years and no deterioration on the quality over the years. Concealed pipes which were previously used for my one of my old R22 General brand air conditioner were reused for R410A Panasonic. Proper purging using Nitrogen was done by the technicians here. So far no issues. R32 Panasonic will be taking over my R410A Panasonic's place next week.

Inaba Denko

This post has been edited by aurion: May 9 2018, 08:10 PM
aurion
post May 17 2018, 09:32 AM

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QUOTE(am3 @ May 17 2018, 08:07 AM)
All sharp have this coanda effect?

Which other aircond have indirect cooling effect like sharp?
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I guess the newer Panasonic Sky & Aero Series have this function. They have been promoting their radiant / shower / direct cooling airflow alot lately
aurion
post May 17 2018, 01:29 PM

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QUOTE(am3 @ May 17 2018, 10:06 AM)
Aero also got? Sky series a bit expensive for me.
Got Mitsubishi Srk12cr-s4 die 1299 Nor include installation. Cheap?
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Shower Cooling is applicable for Aero. Seems to be similar.

Panasonic Shower Cooling
aurion
post May 18 2018, 08:55 AM

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QUOTE(alexander3133 @ May 17 2018, 09:57 PM)
Maybe because new model is already out, the R32 version of Sky Series.
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Agreed, they discontinued the R410A for Sky Series. R410A Premium Inverter will still continue to be sold alongside with the newer R32 Premium Inverter.
aurion
post May 18 2018, 09:25 PM

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QUOTE(Bestsolution @ May 18 2018, 04:31 PM)
Refrigerant make a huge different as in future all refrigerant will be replaced by R32, eventually lesser R410a will be supplied in the market, hence the price of service maintenance for R410a will be higher.  Many contractor prefer to use R32 due to it is single component of gas while R410a is mixure, so very hard to charging gas.
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Agreed with your point on gas recharging. Have consulted with my installer that the cost of recharging R410A will be higher. If the pressure falls below 100psi, the entire system's gas has to be discharged fully before refilling. If it is above 100psi, can still top up. Where else R32 can be topped up at any pressure level.
aurion
post May 19 2018, 11:59 AM

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QUOTE(feekle @ May 19 2018, 10:39 AM)
contemplating between gree 1hp & panasonic 1hp..seller said panasonic quality is bad now because made in china instead of malaysia. How true is this?
Also heard gree also not bad.
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I don't think Panasonics are made in China as the casing labels on my new R32 unit says Made in Malaysia.
aurion
post May 20 2018, 11:46 AM

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QUOTE(ms6309 @ May 20 2018, 09:41 AM)
Oh ya, this is one point to consider. So home use better go for Mitsubishi electric. Do they have power saving 5 star ratings model for non inverter?
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There are 5 star non inverters for M.E.


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aurion
post May 20 2018, 03:30 PM

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QUOTE(feekle @ May 20 2018, 02:17 PM)
Instead of worry about ROI, i suggest its better to worry about maintenance. Ac well maintained can last up to 10+years.
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Another thing to worry about is the spare parts. Though we have been using General brand air conditioners in our house for the past 15 years, they have given us minimal issues, with proper maintenance. Only issues with them are the swing motors, some of which are not functioning and they no longer carry spare parts for them, not like Panasonic, whereby parts for older models can still be found.

Another issue are the remote controllers for the General, the LCD lights up, but all buttons are non-responsive. Bought a replacement remote costed which RM350. But now, they do not carry the remotes anymore due to the fact they only sell inverter air conditioners in their Malaysian line up, so remote controls for them are not compatible with our constant speed units. Have to make do with the generic remote controls, but most functions are not useable due to the fact that the generic remotes do not have much features that suit the a/c.
aurion
post Jun 3 2018, 05:32 PM

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Waiting for my installer to be free to install this fella. A switch from R410A to R32.


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aurion
post Jun 3 2018, 05:56 PM

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QUOTE(slimey @ Jun 3 2018, 05:40 PM)
what happen to the previous aircon?
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Nothing wrong actually. Still very cold bought the R410A Inverter in October last year, relocating it to my room in office due to the old unit in my office room kaput. tongue.gif
aurion
post Jun 3 2018, 06:00 PM

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QUOTE(slimey @ Jun 3 2018, 05:58 PM)
why not just install the the new one at the office?

and what does it mean by kaput? most of the time, aircon can be easily serviced and repair back to working order.
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Too old dy been using for the past 20 over years, compressor gave way. Usually I just transfer my old useable stuff to my office and get new ones for my home use.
aurion
post Jun 3 2018, 06:16 PM

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QUOTE(slimey @ Jun 3 2018, 06:07 PM)
1. cost more.
more work for the installer
2. the more stuff done.......the more prone to error and mistakes.......so why disturb a properly functioning aircon?
3. different refrigerant in previous pipes.
incorrect installation could leave lubricant that is incompatible with the new one. causing lumps to form and burnout the compressor.
4. aircon of 20 years..........likely using old pipes that is too thin........likely 0.5 or 0.4 mm thickness..........cannot be used for r32 or r410a which are high pressure operation gas.
will need to install new pipes and insulator.
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Honestly, cost wise, I don't mind paying a little extra as long as they do a neat and decent job without any return jobs. I just leave it at his hands as we have been using him for our residences and offices so far no issues with his work and return jobs needed for work carried out by him. So happen to become a friend after using him all this while.

Pipings wise, my installer verified is compatible. Have been using pipes of Inaba Denko brand back then when we bought those units. Just need nitrogen flushing. He knows what he doing, main thing honest. If it cannot be done, he will just tell me it cannot be done, if there are risks, he will explain the pro and cons and ask me to decide end of the day.

No offense, not instigating anything here smile.gif
aurion
post Jun 4 2018, 05:12 PM

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QUOTE(tan.brad @ Jun 4 2018, 05:05 PM)
Hi guys,
I have a question.
Currently my aircond comes with 9.52mm/ 3/8inch refrigerant piping requirement.
The refrigerant pipe that's laid in my wall is of size 12.7mm/ 1/2inch.
My question is would it affect the performance of the aircond if i'm to modify the refrigerant pipe of my aircond to connect to the refrigerant pipe in my wall which is slightly bigger? In other words from 9.52mm or 3/8inch to 12.7mm or 1/2 inch pipe.
Would it make it less colder or even hurt the aircond?
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Based on the piping sizes, it is meant for 1.5hp to 2.0hp units. As far as an article I read, there may be a pressure loss by doing so. Attached is the link for your reference. Basic Air Conditioning Piping Recommendations
aurion
post Jun 4 2018, 05:36 PM

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QUOTE(thenuts15 @ Jun 4 2018, 05:29 PM)
Dont get it
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I think what he meant was not comfortable temperature.
aurion
post Jun 4 2018, 07:04 PM

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QUOTE(brapa? @ Jun 4 2018, 06:46 PM)
How often must the aircond be serviced ?
Or wait until not cold or got funny sound only need to call ?
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Usually 6months to a year depending on environmental factors.
aurion
post Jun 13 2018, 04:34 PM

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QUOTE(phoenixxx @ Jun 13 2018, 04:08 PM)
I have had a terrible experience with Panasonic mini cassette. It's not cooling enough despite being 2.5HP in my bedroom. I have it on 20 degrees + ceiling fan now and one fine day I will replace this entire thing.

For the rest, I didn't go for York, but Mitsubishi, which turned out to be really awesome. I have them on 26/27 and they still get very cold. This in my hall vs that Panasonic mini cassette in a smaller bedroom.
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Mini Cassettes do not produce as much airflow as the full sized cassettes despite being of same horsepower.
aurion
post Jun 15 2018, 08:34 AM

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QUOTE(jpsean @ Jun 14 2018, 11:50 PM)
Noted they only do for R410a. Is R32 more difficult to install?
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Both have the same installation techniques. Only precaution that they need to take is that R32 is slightly flammable. I just got my R32 installed yesterday.
aurion
post Jun 22 2018, 08:35 PM

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I wonder that is that circled device in my new air conditioner Panasonic R32 CS-XU13UKH-1. My previous R410 CS-S13TKH-1 didn't have it.Attached Image
aurion
post Jun 23 2018, 11:15 PM

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QUOTE(ChuanHong @ Jun 22 2018, 10:11 PM)
major AC in the past few years were using R410a.. but recent years most manufacturers coming out with newer generation/higher end AC with R32 gas.. advertised more quick cooling and eco-friendly.. no idea about maintenance cost.. but not much difference for cost maintenance wise in my opinion.. but definitely u can see R32 AC are more expensive due to newer models... but any of these 2 will be good enough
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Maintenance cost for R32 should be slightly cheaper than R410A as it is a single component refrigerant, where else R410A is a combination of R32 and R125. Gas for R32 can be topped up at any level, while R410A depends on the pressure level. If it is below 100psi, the whole thing has to be discharged and refilled. If it is above 100psi, it still can be topped up.

This post has been edited by aurion: Jun 24 2018, 11:33 AM

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