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While getting a mini split heat pump and air conditioner might be slightly more expensive compared to purchasing a window unit or a portable air conditioner, this HVAC system will allow you to individually control the temperatures in different rooms, which is a huge advantage. With a ductless mini split air conditioner, you also won’t have to deal with any of the clunky ducts that come with a portable or window unit, and this makes it somewhat easier to install. The Pioneer WYSO12A-19 wall mounted, mini split air conditioner for example would be perfect for anyone that’s on a tight budget, and wants a ductless air conditioning system that is energy efficient and easy to install. Could it be the best ductless mini split air conditioner around? Get to the end of this review and find out.

Why We Like It – Pioneer Mini Split Reviews

As you’ll see in this WSO12A-19 Pioneer Mini Split Review, Pioneer is a company that’s been well known and trusted to create some of the best and most efficient air conditioners for any budget. The WSO12A-19 mini split air conditioner is very much energy efficient, and can be used for both cooling and heating.

  • Used for both cooling & heating
  • 5 Year Warranty on parts
  • Quiet operation
  • Relatively low EER & SEER rating


For $758 on Amazon, you’ll get the Pioneer mini split heat pump that’s got a 12000 BTU rating, which is just perfect for a room that’s between 200 and 500 square feet in size. The air conditioner comes built in with four main functions. Aside from conditioning your air, it’s also capable of heating, dehumidification, and ventilation. This is also similar to the four main functions that you’ll get with the SENL-09CD Senville Mini Split air conditioner, but with a 9000 BTU rating, it won’t be as efficient as the Pioneer ductless unit would be in a 500 sq ft room.

Energy Efficiency

The WYSO 12A-19 Pioneer air conditioner does quite well in terms of energy efficiency, with a SEER rating that ranges between 16 and 19.5. The SEER rating basically gives you an idea of how much energy mini splits are likely to consume, and therefore how much money its use is going to cost you for a whole year. This is different from an EER, or an Energy Efficiency Ratio, which measures how efficient the air conditioner is. Both the EER and SEER of this Pioneer mini split heat pump are 19, and this makes it less efficient compared to the DIY-12-HP-115B25 mrcool mini split, whose ratio for both efficiency and yearly performance is 22.


Similar to most modern Pioneer mini splits, the WYSO12A-19 features both washable, and removable filters, making it very easy to maintain. The filters keep out any polluted air particles, making it possible for the air conditioner to last for an even longer period of use. You can also opt to choose from a variety of even more enhanced filters depending on your needs.


Pioneer mini split systems are made without any compromise on build quality, so everything from the outdoor unit, the ductless indoor unit, the installation kit and the remote controller are made from high quality items that will guarantee a long duration of use. The air conditioner is also covered by a 5 year warranty on parts, but if 5 years doesn’t sound enough for you, then maybe the 10 year warranty that comes with the daikin 12000 btu mini split system might be worth considering.


Even though this Pioneer mini split system doesn’t boast of a very high SEER rating, it’s still worth considering since pioneer systems are generally known to be of superior quality. The WYSO 12A-19 is generally one of the more affordable options that you could consider going for, but if what you’re looking for is the best Pioneer unit available in the market, you ought to be ready to drop some serious money for that.

Pioneer Mini Split Reviews Wrap Up

Parker Davis International is the company behind this and other Pioneer units, and right from their base in Florida, United States, they’ve been doing so for close to 25 years. If you’ve never owned a HVAC system from them before, make sure you read some of the reviews that their customers have left on their Amazon page to get an idea of what to expect.

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Kenn Muguna

Kenn is a writer that's fascinated by all things tech. Having been born curious about how everything works, he spends his time taking things apart to put them back together, and shares what he finds out through writing.

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