Mini split systems are the kind of air conditioners that you go for when you really need control over the kind of indoor climate that you need in every part of your house. They\u2019re better than most portable air conditioning units because you won\u2019t need to move them around, but on the flipside, they also happen to cost quite a lot. The WYS012-19 pioneer air conditioner for example goes for about $750, while a typical window or portable AC unit unit would cost around $500. It\u2019s not really the best windowless air conditioner around, but it\u2019s still a pretty good pick for a ductless mini split system. Get to the end of this review to find out why.\r\n\r\nWhy We Like It - Pioneer WYS012-19\r\nThe Pioneer WYS012-19 mini split air conditioning system is an elegant choice that anyone that needs to have individual control over their indoor climate. The unit allows for Internet access and therefore app control, and has a cooling coverage of about 450 square feet.\r\n\r\nPerformance\r\nThe WYS012-19 pioneer mini split system has a cooling capacity of about 12000 BTU, which will easily serve an area of about 300 to 450 square feet. It\u2019s also capable of heating, so it can be pretty useful in winter as well. The mini split air conditioner has an outdoor unit that\u2019s got a high efficiency DC inverter ductless compressor, which features a galvanized metal construction so that it\u2019s able to withstand adverse weather conditions. It\u2019s indoor unit is also well designed, and has automatic swing air discharge louvres that make it capable of properly distributing air across the room. The ductless wall mount mini split system also boasts of quiet operation, but it will not be able to dehumidify your air like the Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner will.\r\nEnergy Efficiency\r\nMini Split Systems are known to be more energy efficient than the ordinary central air conditioner, and this is really because of the option to use each indoor unit independently. The WYS012-19 Pioneer Mini Split AC for example has an SEER rating of 19, which is high enough from the minimum standard of 13. The higher the SEER rating, the more energy efficient it is, so you shouldn\u2019t have much to worry about with the Pioneer wall mount mini split system in regards to your electricity bill.\r\nFiltration\r\nThe Pioneer Mini split heat pump spots a permanent washable filter that\u2019s pretty easy to deal with. Like that of the Serene Life Portable Air Conditioner, you should probably remove and wash it twice a month, and this is key so that you can ensure that your room stays properly air conditioned. We wish the Pioneer air conditioner heat pump came with a check filter indicator to let you know when you should change them, but because it doesn\u2019t, you just have to put it into your monthly schedule.\r\nDurability\r\nBacked by a 5 year limited warranty that covers the parts and the compressor separately, the Pioneer WYS012-19 has a much better warranty policy than the 1 year that you\u2019ll get with the Black + Decker BPACT08WT Portable Air Conditioner. It also has pretty good build quality, and very quiet.\r\nValue\r\nOne thing that you\u2019ll pretty much appreciate about the Pioneer WYS012-19 is that it comes with a full installation kit. This also includes a mounting bracket for the outdoor unit, as well as an installation manual so that you\u2019re able to figure out how exactly you should put it together. In addition to all that, you\u2019ll also get a remote controller with the wall unit, and this makes making adjustments a lot easier to do especially when you\u2019re on your bed or couch.\r\nPioneer WYS012-19 Wrap Up\r\nMany different customer reviews have been written about the Pioneer WYS012-19, and most of them happen to be positive remarks about its energy efficiency and easy installation. You can go ahead and hop over to Amazon to read through some of these remarks, and see whether the WYS012-19 is the right pick for you.