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

This is a fabulous unit that does exactly what it says it will do. The fact that the majority of the specs are online and can be printed out for review prior to installation, was very helpful and helped us choose this unit. Buying a split A/C online seemed insane. But this turned out to be crazy good.Though the specifics of what would ship - for example, for our particular model, how long was the refrigerant lines? - was hard to discover via the PDF's online. Yet, that was easily fixed by a simple call to the Tech support line. Which is why we give this review 5 stars. The manufacturer should not be penalized in a review because we assumed the worst, instead of the best, which is what we got! We were very impressed with the ability to pick up a phone and ask clarifying questions, which is so RARE when doing a project like this. The call was answered promptly and provided the details that we needed.In addition, the Indoor and Outdoor split units are both lightweight, which everyone appreciated. It is remarkable after the end of an installation to say: wow, what great technology at a reasonable price point. We are the envy of our friends who have consistently gotten hosed with units costing thousands of dollars more.Our contractor had an HVAC professional on speed dial so that when everything was installed, it could be quickly tested and verified that everything was done correctly. The best 1/2 hour check ever - and obviously cost effective!The PVC Line Cover Kit that was recommended worked perfectly and had enough elbows and parts to accommodate the turns of our installation. When our contractor made a choice our HVAC guy would have done differently, it was easy to adjust because we had PVC coverage to not make it an issue.The unit is extraordinarily quiet. We got this to put in a Florida enclosed cabana, with two windows and sliding patio door. Keeping canvases dry from potential mold, and circulating air so that when painting in the tropical heat, this artist might live to paint another day. Kudo's Pioneer and Amazon. Will post updates as time goes on.

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.