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1-20 of 21 Results
  1. HVAC
    First time ever DIY mini split AC. My father and I set everything up, he's a retired electrician. I use the vacuum pump to check for leaks, all looks good. I open up the pipe valves and I hear very loud hissing. Thinking it's normal, I let it be but soon realize it's not. It was leaking...
  2. HVAC
    Hi all, have been considering a mini-split system for a while now, my current set up is multiple a/c window units in the summer and a gas-fired wall heater in the winter. This is for a 1200sq ft 3bd home in Southern CA so the current set up does ok, it would just be nice to have something a...
  3. HVAC
    Hi all, Hoping for some real mini split expertise here. I've got a Fujitsu Halcyon system that heats/cools our whole house, located in SE PA (not far from Philly). 2 outdoor uniots, each running 3 heads indoors. Lately one of the indoor units has started to make a very loud, not quite...
  4. HVAC
    Question: Is there any code prohibiting me from mounting the outdoor section of a mini split way up high, like at the 2nd floor level? I know it will make servicing a pain but hear me out. The reason I'm asking is because I live in a historic district which is governed by the Historic District...
  5. HVAC
    I'm about to to have a single 18K BTU minisplit installed by a contractor. The wall is presently paneled with 70's-era plywood-type paneling. It's probably a little thicker than 1/8". The room is 32x11 with an "L" that's 11x8. I've been going through the house sheetrocking walls and ceilings...
  6. HVAC
    I'm new here and looking for some advice. I have a Fujitsu Halcyon mini split system that was installed 2 and half years ago. When I turn on the indoor unit in cooling mode, it will blow cold air for about an hour then gradually warm up and then just blow room temperature air. I called the HVAC...
  7. HVAC
    I am going to buy and install a minisplit for my garage conversion. Looking at the MrCool 12k BTU 22 SEER from Costco they have for $1,100 for members Are there better options in the precharged units with quick connect lines? Am I better off buying a cheap flaring tool and vacuum to diy a...
  8. Electrical
    Hi, Just looking to get some confirmation or correction on my project. This will be a first for me, so pardon this if it seems obvious. I bought a 115v ductless mini split ac, but before I start the wiring and installation, I want to check myself. I bought a 20 amp breaker, 12g THHN wire...
  9. HVAC
    Hey y'all, I need to replace this part on our LG LS300HLV, but we cannot seem to locate its name or the part number. I have already sought help with a parts distributor, but they have hit a dead end. A video on YouTube calls it the Receiver Module. This is the module that receives the signal...
  10. HVAC
    I have two 10/2 NM cables I need to bring in through the hole in the house into the 4x4x4 PVC junction box pictured. One cable will be connected to the connect my 10-2 NM cable to the THWN stranded cable going to my outdoor condenser for a mini split system; the other will be capped and sit...
  11. HVAC
    Midea heat pump with P4, P6 and LED issues My 4 year old Midea heat pump stopped working. I had a HVAC tech in and the diagnosed a failed compressor. The weird thing is the LED on both inside units are discolored. The Midea service desk says they have never seen this before. Any ideas? This LED...
  12. HVAC
    I'm thinking about buying a DIY mini split heat pump in my living room/kitchen. Are DIY systems manageable for 2 people who have never installed one before? Has anyone hired a taskrabbit for difficult installations?
  13. HVAC
    Hello all, I am installing a mini split A/C in my garage, which I am turning into a living space. So the question is: Do I install it before insulation/dry wall (A/C lines inside the wall) or after insulation/dry wall (A/C lines in the exterior)? I see the value of putting the lines inside the...
  14. HVAC
    Since my last post here. Ive learned a lot about Mini Splits. But I still would appreciate some expert advice please. Ive narrowed my choice down and changed some requirements. For a quick recap: A few specs for my house: I'm in Arizona, elevation 6,500 ft. Low temp -3 F High Temp +/-...
  15. HVAC
    We had a new Mitsubishi Mini-Split system installed in our house this summer consisting of a central air handler to replace a gas furnace, plus a wall-mount head in the master bedroom on the 2nd floor. (Details at the end). The air handler and the wall-mounted head each are controlled by an...
  16. HVAC
    The system is four months old, I had an 18k installed in our kitchen/living room and two 6ks in the bedrooms off a single compressor. When it was installed it appeared to work great, the air was cold and the house was great. Now that it's really hot (96 today) we've noticed it doesn't really get...
  17. HVAC
    Ok. Got your attention yet? Seems everyone either wants to replace existing HVAC with same, or just use mini-splits. Then the argument is more heads for the distant rooms. But in a 'retrofit' we have the existing ductwork. I want to put it to good use. I want to rip out the guts of the 18...
  18. HVAC
    I live in apartment with PTAC units and the noise drives me crazy. The PTAC sleeves are 40", so i can't use 42" modern PTAC replacement units. This is 34 story building so i can't make the PTAC sleeves wider - i have to keep original sleeve grille. I can do whatever i want behind the grille and...
  19. HVAC
    Would a 9,000 btu minisplit unit be enough to heat and cool a 200 sqf room easy, fast, and efficiently?
  20. HVAC
    I'm interested in installing a ducted mini split system, likely a Mitsubishi Mr. Slim, and I had a question in regards to sizing. First, let me state that I live in Albany, NY and my outside design temperature is negative 1. The MXZ-3A30NA unit is normally rated at 28,600 btu for heating at...
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