Mitsubishi Minisplits push humidity up to 70% in bedrooms

“We have four outdoor Mitsubishi air conditioning units and six indoor units (one is a tri-zone install). About two years ago we began to notice whitish residue staining the concrete where one of our unit's drains was, and a few weeks or months after that, the unit wasn't cooling anymore. We had a company come out and they determined that the condenser unit had a crack. This was on one of our "wide and long air flow" units, and they said that it's a common point of failure o”

“Hi, my Mitsubishi mini splits are 4 years old. We just moved into our home last year, so unsure of any maintenance done by the former owners. I noticed my daughter’s room has a slight musty scent- so I had a company come out and do a deep clean of all three upstairs units. He has here for a little over two hours, showed me progress. Said my bedroom one was super dusty and had condensation in the pan. But surprisingly, my daughter’s was the cleanest of all three and the pan was bone dry. Now it’s”

“We have 4 Mitsubishi mini split air handlers. The condensate pump died on the unit in the kids room and was making an awful noise. I couldn’t get the chord out of the wall quick enough and got annoyed with the sound and just cut the wire to kill the pump. The pump was a refco gobi II. After I cut the chord I cannot turn the unit on. The unit in the living room no longer turns on as well. I got the housing off and was able to pull the cut chord out of the wall and properly unplug it, there’s no e”

“Looking to cool a 14x34x14 bonus room. Recently had it insulated and new windows. Previously had an 18k Mitsubishi minisplit about 6 years ago that (obviously) had a hard time cooling the room down with little insulation. You can see the head where it was installed previously. Realistically, what size mi I split should I be looking for, and does the length of the room mean I should be trying for 2 heads spaced at each end, or would one in the middle be enough? If middle, how high on the wall sho”

“I have 4 Mitsubishi ceiling cassette mini-splits, and the one in our bedroom has developed very weak airflow over the last few months. I’m also finding black flakes/debris underneath it, so I suspect the blower wheel is filthy or deteriorating. It’s a heat advisory on the east coast US and I’m over it and need advice on fixing. I’ve found the service manuals online, but unfortunately they don’t actually show how to remove/access the blower wheel. I called a few of the preferred installer in my a”

“I live in a climate that resembles hot, dirty mop water. We have 3 Mitsubishi units for our 2,900 sq ft home. Our indoor humidity stays in the high 60s during the summer. We recently went on a trip and I realized our clothes stunk of must and when we returned home our house downright stunk. I’m pregnant and literally gagged walking upstairs. Our 4 year old said it smelled like bread 😅 We just did an addition to this home so a large portion of it is brand new, including where our clothes are. My”

“Hi everyone, We recently had 3 mini split units put into our 1200 sqft, 110 year old home. 2 cieling cassettes in the upstairs bedrooms (9k BTU each), 1 normal mini split downstairs (18k BTU), and a 3 ton condenser unit outside. The guys who did the install were very nice but im a little concerned about the install. We've had them address several problems so far: Water leaking from the units. The house is old and leans towards the front yard, but the way they ran the discharge lines was agai”

“We've been having the weirdest issue with our Mitsubishi Ductless Electric Mini Splits, in the New England area. Bit of background. We set them ~69-70 at night before going to bed to drive down the temperature, up to 72 in the morning, then 74 after another couple of hours. If the temp is going to get above 90 outside, we normally hike it up a few more degrees (76-77) during day, and if it's a real burner outside we keep it 20 degrees below outside temp. This has been working well for us”

“We just had Mitsubishi mini splits installed, but now it’s very humid in our room to the point where the sheets feel damp. We can get the humidity down a bit by going into Dry mode but then it gets very cold. In Cool mode the humidity settles out between 70%-80%. The installer is “looking into it” What thoughts does Reddit have? submitted by /u/johnchimp [link] [comments]”

“Looking for some advice here. Our cape cod recently underwent a retrofit for central air, however the upstairs utilizes a Mitsubishi split unit for cooling while the downstairs is a traditional furnace/ac with duct work. The issue we are having is out of control humidity in the upstairs. I’m talking upwards of 80% at 69 or 70 degrees F. It’s the worst in the mornings, but even during the day the lowest it gets is maybe 60%. I’ve tried running the fan as slow as it can go and using “DRY” mode, wi”

“Long story short.. bought a house in Michigan that didn’t have air conditioning upstairs. Spent the money to install top of the line Mitsubishi mini’s in 3 bedrooms (and a standalone office). Ever since we installed these things they have been a mess. The 3 splits tied to one outdoor condenser had a fitting come loose right after install and just blew hot air. Now they cool, but are pushing humidity up to 70% in the bedrooms. On top of that, apparently Mitsubishi just put out a bulletin about so”