DIY Install of Mitsubishi Mr Slim Heat pump
chiaki0730
12 years ago
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fluffybunnysui
12 years agobrickeyee
12 years agoRelated Discussions
Mr. Slim ... anyone love it?
Comments (10)Anders: Not knowing all the variables to your installation there might be a reason for the very high price. I recently had a 15,000 btu Fujitsu RLQ Heatpump (20 SEER and qualified for rebate) installed for $2700. This price included running a new 220 line from the electrical panel to the new condenser location (50'). In our area (South Carolina) Fujitsu is a popular brand with installers along with Mitsubishi. As mentioned in a previous thread Mitsubishi was the first company to introduce these in the USA and is the most widely known by name. I also got bids from 4 other contractors including two who specified the Mitsubishi 15000 btu heatpumps. From my web searches and discussion with HVAC folks it would appear there's not much difference between the top of the line brands. The prices varied greatly between quotes even for the same product although the Mitsubishi lowest quote was $500 higher than my low Fujitsu quote. I would suggest going with an installer certified by the manufacturer and who has installed a large number of these units. Get at least 3 quotes. Also make sure it's an inverter operation with high SEER. We love our mini split. It's doing a great job in our 400 s.f. sunporch. Good luck....See MoreMitsubishi Mr. Slim Ductless Unit Noise Issues
Comments (59)I rent an apartment that is heated/air conditioned by a Mitsubishi wall mounted unit with two pumps installed on the outside wall of my bedroom. Last year, I didn't seem to recall having any problems, but since winter set in, this year, there have been periods of excessive humming noise and vibration so that I could not sleep. Then a couple of weeks ago, during a snowstorm, water came through the ceiling unit in my living room. It ceased rather quickly once I shut down the unit. Interestingly enough, the outside noise and vibration seemed to have quietened down until a week or so ago. My landlord checked and confirmed that he heard the noise outside my window, and called a service technician, who came today. Low and behold, nice and quiet, no issues. I told him it was intermittent, but the company doesn't really deal with Mitsubishi so the representative couldn't offer an explanation, just suggested to tape record it when the noise happens again. I am not crazy or oversensitive. As a matter of fact, I have severe hearing impairment in one ear and cannot hear the alarm go off if I am lying on that side. Yet, for nights and days and weeks, the noise and vibration was so intense I couldn't sleep or concentrate on any activity. Has anyone else had this problem?...See MoreQuestion on Mr. Slim Split-Ductless Heat Pump
Comments (3)Having had a Mit HP ductless in my vacation home, I have a few comments to share. The unit has its drawbacks such as air noise, certainly less than a thru the wall or window unit but more than a piped in diffuser from a central system. I found it to be a bit annoying but grew used to it. The other drawback was the constant air movement that some would perceive as a draft. With the air moving a properly sized unit should distribute the heat fairly well as the wall units discharge down and have an air sweep option. No doubt the elect baseboard will be the quietist more and comfortable for heating; however it comes at a cost (energy use over a HP) Another option if you are going to heat electrically is to consider electric radiant heat mats installed under the tile. This will keep the floors warm, at or below the cost of operating the baseboard but add 10X the comfort and would be supplemented with the fireplace. For AC you could still go with a ductless or quality through the wall unit. Here is a link that might be useful: one type of electric floor radiant...See MoreIs a heat pump right for us? New Construction
Comments (75)David, you're building a new house to live in. Not a palace but a reasonable middle class house and you have an adequate budget and financing. Are you going to use electric resistance heating for heat? I believe the concept of "efficiency" for electric heating didn't come into use until the growth of heat pumps. Resistance heating was defined as 100% efficient, and then the energy efficiency of heat pumps could be expressed numerically as some multiple of resistance heating, the benefit and increased output coming from the different physics involved. Resistance = 100% is the baseline used for comparison measurement. It has no other significance to my knowledge. The dangers of coal plants have been known for decades, yet utilities in areas like yours (the South) have been permitted to continue using them. Yes, they're starting to be shuttered. 20 years or more too late. In my area, relatively much cleaner and less dangerous gas power plants are being taken out of service and shut down. We'll be paying even more than now for electricity but it is the right thing to do. The big challenge is storage for nighttime and other usage when the sun isn't shining. If you're interested, one of several storage systems in our state is the Castaic Power Plant, in service for many decades. Offpeak power is used to pump water uphill to a higher reservoir. It's then released when needed, and pumped back uphill to use again. There are a number of such water "battery systems" in the California mountains, though none are real large....See Moreionized_gw
12 years agochuckfh
12 years agokirkhall
12 years ago
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