I am an hvac contractor of 28 years. When we bought our 10 year old custom built house, I thought I am going to put a really efficient heat pump in. So Mitsubshi actually gave me the best deal on equipment, so I went with them. Over $6,000.00 in just equipment. I installed all new duct work, nice Aprilaire touch screen stat, air cleaner, steam humidifier, whole house dehumidifier. Stat controlled everything. Sounds good right? Well wrong you are! The air handler will not cool house down when it's 90+ outside. It's actually 77 in here now,and it's set to 70. Reps have been here and first they blamed stat, removed and put Mitsubshi stats (2 different ones)von, nope didn't fix it. Then was air filter, changed it, still doesn't work! They are terrible to deal with and I'm a contractor who installs hundreds of thousands of dollars of this stuff every year! I just finished a 2 month job at a hospital with a total of 29 tons of cooling and total of 26 indoor units at a cost of over $250,000. That works perfect, but I can't install a simple 3.5 ton-residential system. Do the math here, mvz's are not a good match for residential retro fits. When we come to conclusion I will update this review, but currently don't waist your money! I would be getting sued if I would have put this in someone's house! Ductless units are great, they just can't get this one right!