We give up on Samsung and buy a Daikin

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New Daikin Split Air Con Unit

New Daikin Split Air Con Unit

daikin

 

 

 

 

 

 

HOW MUCH ELECTRICITY DOES THE NON-INVERTER DAIKIN USE?

 

 

Before we permanently wired in the Daikin, we wanted to get an accurate measurement of how much power the unit used when its compressor is running.  The answer is shown above, 478.5 Watts.  How much power you will actually use depends on the percentage of time the compressor is running.  When the compressor is not running, the unit uses very little power.  When the compressor starts up, it momentarily uses quite a bit more power, as does any AC motor when it starts up.  This is why regulators and utility companies like inverters.  With an inverter, there are no demand surges as the inverter compressor runs continuously.  I guess the theory is that that when thousands or tens of thousands  of compressors cycle on, the peak power demand the utility has to provide is higher than it would be if everyone had inverter units.  We did not measure the startup Wattage, but assume it’s 1.5KW or so, for the brief moment the compressor is switched on.  This does not mean that inverters are inherently more efficient than conventional units.  It fact, they may be less efficient because they waste energy converting AC to the DC power the inverter compressor uses.  The added electronics are what make inverters more likely to fail and more expensive to repair.

We have made several posts about the ongoing problems with our P29,000 ($660) Samsung inverter split air conditioning unit. Faced with repeated repairs and, to our mind, unsatisfactory responses from Samsung in Iloilo, Manila and Korea we decided to cut our losses and replace the Samsung with a Daikin conventional, non-inverter unit. Read the updated story of why we gave up on Samsung and why we gave up on inverter air conditioners at http://myphilippinelife.com/inverter-air-conditioners-not-the-best-choice-for-everyone/

Comments (14) Write a comment

  1. After 3 years living with inverter technology on a remote island, I learned some things on inverters. The main lesson is to build a screened cover over all inverters. I have them in my washng machine, in my fridge, in my freezer and in my solar controllers and solar inverters. All properly screened. It is a little bit of fiddling to install the screens and you have to inspect them regularly so that they do not clog up with dirt, but they keep going. Without inverters, my powersystem would be useless, I cannot start a 220V fridge/freezer without inverters, the starting currents are too high. Stainless steel screens are great, even the nylon fly-screens work. I think that the salty air will damage the units long before gecko’s get burned in them.
    As for the customer service, I have little hope for whatever company, loads of only negative experience, so that is normally where I contact the manufacturers directly, mainly through contacts abroad where they seem to be much more accommodating. Japan has been great in giving service and when you have a contact there, your problem is usually solved in a jiffy.

    Reply

    • Paul,

      Thanks for your comments. We did write to Samsung big shots in Korea and never received a reply.

      Bob

      Reply

  2. I have used 2 units LG 1.5 inverter units on 2 different rooms in my house. one room is about 17sqm and the other is about 27sq.m. before this i used conventional 2hp carrier unit and 1hp samsung unit. after i changed units my electricity cost dwindled from 17 to 22thousand to 11.5 to 17thousand. both units used almost 24hrs a day. i bought the units for 27500 each installed. so by my calculation in two years i would have saved the cost of the units already. its been 3.5years nothing has gone wrong except cleaning trice at 1200 each. Can you tell us your electricity cost when you switched back to conventional units? can you give a comparison from before to now? most of the time the temperature i use is 25 although i’m not sure if its accurate. my bill for feb is 11600 with 3inverter ac, 3inverter refs plus lights, comp. etc. in 3 bedrooms. 2 br are almost 24hrs on, the third is on mostly at night except if no classes then its on all day.nice info by the way. cannot find any other local comparisons. i also have a theory that you can achieve the same results by using an undersized conventional unit like .5hp or .8hp since it will not cycle on and off. but as to how long it will last i have not seen any blogs. the ac on the third room is a kolin inverter window type 1hp usually at 20 to 23 temp ( i don’t think its accurate) it replaced a condura conventional 1.5hp which was much cooler when it was on.i bought the kolin about a year ago for 21500. the third room is mostly used at night after school.

    Reply

    • Gayle, Thanks for your feedback. We have three conventional (R22) aircon units, a large non-inverter refrigerator, a freezer and a fair amount of security lighting. Our February bill was P4,400. Our biggest bill was less than P6,000. Our 1 HP Daikin runs most of the time. Our 1 HP Samsung and 2 HP Daikin occasionally. The 1 HP Daikin replaced our 1.5 HP Samsung (which we just gave away). This follows your theory to use a small conventional unit and run it near continuously when it’s hot. If anything the Daikin uses less power than the Samsung inverter. People have suggested that running a small unit continuously will wear it out prematurely. Remember, that inverter units also run continuously, although at variable speeds. There is much more to fail in an inverter unit. We probably don’t keep our rooms as cool as you do. Recently we stay in a hotel in Saigon for three weeks. It had lovely bedding including a thick duvet. We made our hotel room cold so we could enjoy the cozy duvet. When we got home we bought a duvet and made our bedroom cold enough to enjoy it. It dawned on us that this was ridiculous and we put away the duvet and now sleep with a sheet and light blanket.

      Reply

  3. Dear bob/carol,

    Good day,

    We have a bedroom of 18 Sqm and living room of 13 Sqm in Davao City.
    Both daikin & Panasonic suggest :-
    18 Sqm – 2.5 Hp
    13 Sqm – 1.5 Hp

    They are overly priced. Would be greatly appreciated to get your suggestion or advice if there is another way. But if you say that the above brands have provided the right details, then we will proceed. We just want what’s best, a simple split type AC that can last for decades. Thank you.

    Note : if you ask what model no. , they didn’t say. All we know is that it’s not a smart inverter. As per your post its recommended to keep it simple.

    Reply

    • There are so many considerations. How many windows facing south or west? How cold do you want your room to be on the hottest day? We can only say that our P20,000 1HP Daikin split conventional (non inverter) unit cools our 25.68SM bedroom adequately during the hottest weather. Remember too that most of the year is cooler. We do have insulation in our attic. Our big non-tinted windows (5′ x 8′) face ESE and NWN. If the windows faced south and west, more capacity would be needed. Also note that the Daikin 1HP split has more cooling capacity and efficiency than most of the others. We also have a 17.5SM bedroom cooled by a Samsung 1HP conventional split. This room has the same big windows but facing more S & W, but with good shade on the west. The Samsung is less powerful than the Daikin but is still very adequate for this smaller, uninsulated room. So, I would be very careful in accepting a salesperson’s recommendations. They are generally poorly informed and want to sell the biggest, fanciest unit. Selling you a unit which is too big is a plus because they make more money/commission and you will never complain that the unit is not cooling your room. They will never, ever tell you about the problems with inverters. We’d say, if money is no object, buy an inverter. They do maintain more even room temperatures than conventional units. If you buy a conventional unit make sure it is not too big for your rooms. That will lead to poor dehumidification and excess cooling. Good luck.

      Reply

  4. I just found your blog and I have to say that it is very informative. I am preparing to transport my father back to the Philippines to stay (Pangasinan) and I was worried about getting doctors and prescription drugs for him (he has a pacemaker). But reading your blog is providing me some comfort in knowing that it is do-able. Thank you and God bless you!

    Reply

    • Yes, you will certainly need an electrophysiologist to keep the pacemaker maintained. Plan on a trip to Manila for that. Pacemakers are something of a rarity in the Philippines, probably because of the cost. Gladys Ruth S. David at Cardinal Santos Hospital is one. Best wishes. Bob and Carol

      Reply

  5. I live in San Fernando, Pampanga. I bought 2 Daikin 1.5 hp Inverter type ACs 4 years ago and 1 Daikin 1.5 hp Inverter 2 years ago. We usually have 1 of these units going 24/7 which are located in Master Bedroom, Home Office and a Guest Room. I also have an Inverter type large double door refrigerator (LG). I haven’t had any problems other than my maintenance man breaking plastic parts when he cleans them. I’ve starting using a self drying spray-on chemical that I use on the indoor air handler every 1-2 months (I bought from the USA) and have the original installer clean it once a year where he dismantles everything. My electric bill has gone from 12K to 7K per month. I have a lot of Geckos but so far so good. ha ha

    Reply

  6. Hello Sir Bob,

    We have two inverter-type aircon units in our house (master bedroom and home office). Both are Carrier brand, and both are 1 HP for about 12 square meters room size. We also bought a 1 HP conventional split-type aircon from the same manufacturer a year later and had it installed in the 16 square meter guest room. The choice inverter or not was based on usage frequency; the size was chosen according to our own research – the merchants we consulted all recommended higher powered models.

    Suffice to say that our choices turned out to be all right. We’re running the aircon units only at minimum capacity, set to 26 or 27 degrees Celsius, which grants a nice room climate without the dreaded cold air flow that creates stiff necks. They are working reliably ever since we installed them. Maintenance charges are minimal; annual servicing for all three units is Php 1500. No defect whatsoever. Already being aware of your bad experiences with electrocuted lizards etc., I asked the head of the maintenance team how their experiences are in that matter. He replied that they had such issues frequently in former years, especially with Samsung and Kolin brand inverters, but Carrier seems to have done its homework a lot better, as they have rarely experienced incidents of that kind with Carrier units. They are indeed pricey compared to the former two brands, but still quite some pesos below the price range of a Panasonic or Daikin.

    Bob, from my point of view your suggestions are as always valuable, well founded, and backed by experiences; mine are a bit different this time, on the luckier side, though. The most important choice is, as you’ve pointed out, the selection of the right capacity: better a bit undersized than too large.

    Our Carrier aircon units were supplied and installed by RACs Engineering, Brgy. Bolilao, Mandurriao, Iloilo City. I’m not affiliated to the business in any way, just giving an endorsement because of my generally positive experience.

    Best, Willy

    Reply

    • Willy, thanks for sharing your good experiences with Carrier and RACS Engineering — and for the kind words. I know that the air conditioning manufacturers are working out the kinks with inverters. I understand that Panasonic is now protecting their circuit boards with a silicone coating. I think we had the misfortune to buy our inverter five years ago. Perhaps Samsung has improved its design, but they certainly have not improved their customer service or willingness to own up to their problems. I only bought Samsung because their online specs gave the wrong kJ/hr capacity, making it seem more powerful than the Panasonic I was considering buying.

      We too don’t really like overly cold air conditioning. We generally set ours at 27C. It does appear that our 1HP Daikin is going to cool our bedroom just fine. We also originally followed the same thinking — putting non-inverter units in guest bedroom which are not used so much and an inverter in out bedroom where we use air con most nights.

      As far as pricing goes, the 1HP Daikin was actually cheaper than a Panasonic of the same type and 9500 kJ/h as compared with 9,000 kJ/H for the Panasonic. Don’t laugh, but the Daikin outside unit was heavier so I figured it might be built more sturdily.

      Thanks again for sharing. Bob and Carol

      Reply

    • Kumusta naman po ang power consumption ng carrier sir? Almost 3 weeks na po kami nalilito kung anong brand po maganda bilhin at matipid. At first we plan to buy kopp kasi mura, then nung napunta na kami sa sppliance store the S.A. that sells mitsubishi somehow convinced us to sgift to mitsubishi, but some reasons of his arrogance in dealing with us in the latter part of talking with him we opted to go do some research again. And may nakita po ako na post na maganda daw ang carrier at tipid pa sa power consumption after seeing ms. Daphne paez post of from 15+k to 5k+ after switching to carrier split type. Tapos pumunta naman kami sa abenson, then wala yung gusto namin na specific model. The S.A. convinced us to buy samsung kasi sa digital 8 pole inverter then after reading comments from this blog and to the other blog of the same writer/blogger. Parang I am leaning toward daikin nanaman.
      Gulong gulo na tlga ako on what to buy. Sana matulongan niyo kami.

      By the way we are planning to buy 2HP split type inverter para hindi na kami magbutas or mas madali ma.install.

      Gusto namin sana yung matipid at long lasting and the maintenance is mura lang din. Thanks sa help.

      Thanks,
      Elaine

      Reply

  7. Thanks for the untiring informative posts, Bob and Carol. The split aircon gave up due to salt air? Or just not that good? I have to review the post as I usually did.

    I apologize for not calling while I was there. I felt a bus load of us would be just too overwhelming as visitors. We had babies that were always running around, and adults that were frequently tired, hot, and hungry.. Bad mix to be good guests.

    Reply

    • Hi Natie, no, in our case it was not salt air that doomed our Samsung inverter, it was geckos getting into the circuit board and blowing themselves and the circuit boards up. You do raise a good point. Salt air is a threat to inverter circuit boards, corroding the traces on the boards. Inverter air conditioners are an amazing technological leap, but they involve much more complexity and circuitry. No problem about the visit. Next time!

      Reply

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