Media...hmmm

Wow. Long piping. A reminder, check your AC spec. I do not believe there is any 1HP and 1.5HP AC piping that allows you to go more than 20m. That 100 plus feet might result in compressor oil return problem and your compressor will die very fast. Capacity drop is the last thing you will want to worry.

Right...enlighten me...tell me how an AC installer can help you do energy saving? Unless he helps you temper your meter la. Is that what you mean?

Copper pipe is brazing. Not solder or weld. Dont bend it I agree. Warp the outlet with muskin tape and outdoor side put plastic bag. Get your AC installer to vacuum kao kao during installation. Just leave it there and dont cut. Poor brazing work will result in leakage. What they do in factory is that after they braze the will usually test the brazing point with a 450 to 600 psi pressure depending on pipe thickness. I doubt that your AC man can do that. Do not cut.

Haha. They call it the 'pressure dip tank'. Checking compressor normally they hod pressure with bubble soap on the joints. Else, they will use more high tech machine. They call it the leakage checker.

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Added on July 11, 2012, 12:41 pmNot necessarily. 3HP might not need a bigger piping size. Check spec. Also check your AC spec to see what is the standard piping length. Within this standard piping length, there is no need to add on the refrigerant. Do not exceed the max allowable piping length. Once exceed, you will have compressor oil return problem. Installation work for all 'residential' AC is the same. Work is the same. The cost difference is because of the piping length and type, and also the location of the AC. If it is difficult to access, AC installer wants higher price. For 'residential' AC, you do not need to top up gas if your piping length does not exceed the standard piping length. Take note and dont get conned.

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Added on July 11, 2012, 12:47 pmOf course there is always a de-rating value which is not always available in the catalogue. 90ft = 27m. That is a long one plus outdoor unit is at the bottom. Unless you are using single split packaged unit (cassettes, ducted, ceiling exposed), there will be no single split wall mounted that can allow piping length that long. So design the location wise. Putting the compressor at the top helps in your case.

This post has been edited by lingleeyen: Jul 11 2012, 12:47 PM

Please get a proper AC. Efficiency of such portable unit is unknown.

Will you buy if the sales said that it is quite noisy therefore not really energy saving? Keke.

Thats right. If I am not mistaken, Pana technical manual states 0.8mmt copper pipe. Crazy. Standard practice for installer nowadays are running 0.6mmt pipes.

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Added on September 22, 2012, 9:39 pmIt is not right to say that. It is true that the core business for Daikin is AC. Without AC, Daikin will never be anywhere near what they are today.

However, beside home appliances, look at the R&D that goes into the Pana AC.Pana is not all brands. But of course, it is only fair for the consumer to judge if the performance of either brand meets their expectation.

This post has been edited by lingleeyen: Sep 22 2012, 09:39 PM

No, you will need a separate power point for AC and Heater. Do not join use the point (looping).

Standard installation covers what you want to cover. It is all about money. Standard 'electrical shop' installation includes installation of indoor and outdoor, piping (10 feet notmally?). Tools and material that comes with it are all included, no extra pay.

Some AC Installer might know how, but I will say get a pro electrician to do it. Don't because you want to save the 200 bucks you have a burnt house.

Panasonic room air conditioners are made in Malaysia, exporting to more than 80 countries. All parts are self sustained including their die and mold. PCB is outsourced from local company. So Panasonic is currently still Malaysia made.

Wrong calculation by my side.

This post has been edited by lingleeyen: Nov 1 2012, 08:38 AM

I believe yours is micro leak. Very very hard to detect. Why not do a pressure hold on both the piping and the units now? Hold it for a week or so.

I come to know that there is a device to scan and check refrigerant presence. If there is a leakage, there will be a reading on the device. A more 'tool' way to identify than the soap test. But I also know this tool is not common and not all installer has it. I have no idea which installer has it. You will need to ask around.

Looking at the size only, the AC already is under sized. 1HP is already not the right size. At least 1.5HP.

Venier cliper. Is that how they spell it?

Inverter is inverter. ECONAVI is sensor function. They co-exist to give more energy saving.

Pana power supply goes to the indoor units

Promo ended beginning of last year because the claim is too 'encouraging'.