Pioneer Air Conditioner WYS012A-20 Wall Mount Ductless Inverter+ Mini Split Heat Pump, 12000 BTU-110/120V

I installed this one and had an issue with a leak, not from my threads but from a factory sealed area. They promptly replaced the wall unit and some r410 and it runs great!Love the ease of use and how quiet they are. My first one was a basic less expensive WYT model, and it works great. The heat cranks out and it gets to 0 degrees F here all the time. It isn't enough to be a stand alone heat source but it supplements the heat in my poorly insulated cabin.The second unit was the more efficient 22 SEER and it runs great as well, those were 9000 BTU. I now have a 12,000 BTU and is the 21.5 Seer.I like the air drying mode when you don't need the AC, it takes the humidity out of the air.I leave the units off during the week and use the wifi module to turn them on before I go to the cabin on Friday. They are cool when I get there. The WYS models are the way to go for ease of wifi. The WYT model I have is a pain to install the wifi and I haven't done it yet. The whole wall mount has to be dismantled to plug it in.Super easy to install on your own. Look at YouTube for videos. You only need a $150 in tools and you save over $1000

I hate people telling me what I can't do. I want to live in a society that is always trying to help others do everything, from medical help to "holier than thou" HVAC work. Programmers have put open source software into everything like TVs, refrigerators, thermostats, electrical grids, airplanes, and everything else digital. Why can all other professions have the same sharing attitude?I decided to install this myself in a small, 720 square foot decently well insulated home. This was my first time ever working with HVAC and so far it seems to have worked great. It cools off beautifully.The first thing I have to say is that the instructions are written very well. The only part that seemed understated was the head unit wiring. It's not hard but I didn't find the instructions clear on my particular model.I had trouble pumping a vacuum during my "tests" before install. I didn't even come close to tightening the copper properly. The instructions warned several times about "over tightening". I waaay under tightened. With the proper torch with a torch wrench, I had no problems. I pulled a vacuum, waited for a half hour, and filled the system with refrigerate as directed by the instructions. It worked great.Running the copper lines is the most difficult and nervous part. I was very careful, and I recommend two people help with this.The instructions are great. But there are a few things that caught me by surprise:- The indoor unit just clings onto the bracket. If feels strange, but it looks great.- The drain line seems a little short still.- It came with a small bag of "plastic" something and I have no idea what that is for. The instruction made no mention.My local discount tool place sells torch wrenches for $20 and crow foot wrench heads. You need a large head ( I believe 1") for the large line. The only place I can find that sells those is Amazon. Search for Crowfoot Wrench Set. Should run about $20. ***You need this!*** Since the heat pump mode operates at a high pressure, it's very important that it's properly tightened.- AC Refrigeration Pump (can be bought on Amazon for about $130)- Mini Split adapter fitting. (the pump is usually a different size then minisplit) ($15)-Torch Wrench ($20)-Crow Foot Wrench Set ($20) *You need this*- HVAC flaring Kit ($35)- Hole Saw ($20)- Pipe cutter (for copper) ($10)- Condenser bracket/Mounting bracket or pad ($45)- Line cover kit ($45)- Electrical AC disconnect ($10)- Electrical wire- Pipe sealant suitable for HVAC lines. ($8)So your'e looking at around $350 if you were to buy all the extra tools and parts yourself. The electrical, with a shutoff by the unit costs about $30 for all the parts and wiring.I've been running it on "eco" mode and it keeps the place cool on 100 degree days. I can easily get the house down to 67 if I crank the system on high.And that's it! I'm happy so far, seems very well engineered.

Bought this unit in mid October of 2019. The weather got super cold too fast for me to install because I worked 9 months straight, 12 hour days, 6am to 6pm and that doesn't leave me feeling motivated or with a lot of daylight to install this thing. Early 2020 I was able to start this as the days were staying brighter later. I followed the install manual to the letter and later had my coworker vac the lines down and open the service ports. After trying this unit for about 20 minutes (fan spinning, compressor never kicked on) the unit began smoking. I quickly pulled the local disconnect and my coworker thought maybe that I had not wired the unit up correctly. This wasn't my first wiring rodeo, but there is always a chance I missed something. Turns out it was all setup correctly. So begins the 5 week email chain (including pictures, etc) back and forth with Parker davis (pioneers parent company) and the communication was abysmal. The guy I was going back and forth with said my email went to his trash bin for some reason. He then said he woyld send me a new pcm board. A month went by with no communication and I contacted him again asking if everything was still a go on the new board. He responded with "yes, the board was on back order and it should be arriving to you within the week.Board arrived. The screw holes were chewed up like they had pulled the board from a used unit (back ordered?) and there were rub marks along the metal on the casing. I installed the new board and we were off to the races. I fired it up and hoped for no smoke. It worked this time, well i mean it didn't smoke this time. The outdoor fan kicked on and went inside. The air seemed cool coming out of the fan, but it was actually just circulating the room temperature air. I tried it in heat mode, the fan reversed and started spinning the other direction (as it is supposed to). The indoor unit fan never turned on, or if it did, it was so slow that I couldn't notice.Called a service tech to come out. He checked all the things that I checked before finally calling tech support. After about an hour of troubleshooting, the tech and the tech support tech deduced that the 4 way valve isn't working properly. So now, i have a new 4 way part on its way for a unit that has never run correctly from day one. The hvac tech said "i can come back and braise this on for you, but it will be a little expensive." I asked about warranty and he said "they will warranty parts, but not service." Less than a year old and I am paying for replacement parts to be installed on a defective unit? Last pioneer I ever deal with. Super disappointed.Fast forward to October of 2020: called customer service and please with them that their product hasn't worked from day one. Asked if there was anything they could do. They checked with their supervisor and offered me a new outdoor unit for around $200 shipped. I accepted and it was delivered in reasonable time. I installed the unit and it works great. It is pretty warm here now and at 77 degrees set point, my garage feels comfortable on hot days. In the winter, I want it to run pretty low. Just cold enough that my outdoor fridge doesn't freeze over. The lowest set point is 62 degrees. So it runs non stop in the winter, but the fridge didn't freeze. Had no issue with snow getting in the way of the outdoor unit and it never had any faults. Ran right through cold and hot temps