About LG Air Conditioner When the cold or heat make home comfort a problem an LG air conditioner or heater is your solution. LG electronics applies their propritary technology on air conditioner and heat systems that allow you to take control of your home comfort heating and air conditioning needs. A ductless system, also known as a "split" air conditioner system, is made up of or includes two components: an indoor unit to deliver conditioned air to the room, and an outdoor air conditioner located outside of the house. Compact refrigerant lines run between the two units, eliminating the need for bulky ductwork. Ductless systems are ideal for older homes that have no ductwork, room additions, or areas in homes that just never seem to be the right temperature or are never comfortable. LG ductless systems are available in a range of sizes and styles--including systems that can heat and cool multiple rooms with a single outdoor unit to fit almost any need. The indoor units are available in many different types to fit with the look and feel of your home.

Whether you're creating a quiet, comfort controlled room, or simply want to heat or cool an area without expensive ductwork, LG's ductless systems set a new standard for efficiency, great looks and comfort.lowes central air conditioner cover About LG Ductless Air Conditioners...ac dc power supply 12v 500ma LG understands that Life's Good and we should enjoy it to the fullest. 1994 honda civic ac beltDuctless Air conditioners are part of LG everlasting techonolgy upgrades with smart inverter compressors. "Read more about LG."As part of an ongoing energy upgrade of my 1930 home, I had four Mitsubishi Mr. Slim mini-split heat pumps installed (three MUZ/MSZFE09NA 9000 BTU units, and one MUZ/MSZ12NA 12,000 BTU unit.) If price had been no object, I probably would have gone for Waterfurnace’s (TSX:WFI/OTC:WFIFF) Series 7 or Climatemaster’s Trilogy ground source heat pumps,  but my home’s existing heating is an oil boiler and radiators, and the Series 7 would require installing air ducts throughout the house.  

The mini splits have the advantage that the refrigerant lines can run up the outside of the house, making them much easier to retrofit. The geothermal systems I was quoted would have cost $50,000 to $60,000 (minus a $500 rebate from my utility), while the mini-splits cost $15,500 (minus a $2000 rebate.) Because I’m also doing extensive insulation and air sealing, my heating bill is only about $2000 a year, even using oil at over $4 a gallon.  After using the air source heat pumps for two months, I expect these mini splits will approximately halve that.  The geothermal system would have done better, but even if it cut my heating bill by an impossible 100%, it would have taken 25 years to pay back my investment.  The mini-splits will have an estimated payback of about 13 years, which is not great, but both they and the geothermal system have the added advantage of giving me efficient air conditioning in a home that did not previously have it.  In New York’s Hudson Valley where I live, A/C is only useful for about 1 month a year, but it’s sure nice to have during that hot and sticky month!

In any case, I’m happy with the mini splits except for one thing: they have very limited programability, something I did not realize before I had them installed.  The best you can do with the included remote controller is set them to turn on and off once each during a given 24 hour period, and you have to manually set this up every day to use them that way. There is an available programmable thermostat (Mitsubishi kit MHK1), but it is intended to be installed with the heat pumps, not after the fact.  My HVAC contractor offered to install them anyway, but he wanted $350 each, or a total of $1,400 for all four.  That’s not unreasonable, since the MHK1 retails for  $243, but it was more than I was ready to pay. Since he told me he would have to figure out how to do the install from the documentation, and I had seen him struggling with the translated-from-Japanese when he was trying to figure out what was wrong with one of the units when it was first installed.  (It turns out two of the wires were reversed.)  

I’m decent at that sort of thing, so I decided to give it a go myself. There was one point where the documentation was completely unhelpful.  I figured it out eventually, but the rest of this post should save you a lot of trouble if you’re trying to do the same thing. Installing Mitsubishi Programmable Thermostat Kit MHK1 on Mr. Slim Heat Pumps Not only does the manual say to install the data cable before the heat pump is installed, there is no information about where the “CN105” connector on the control board is to be found, or even where the control board is.  None of the documentation I found online was any more helpful.  Eventually, I figured out where the control board and CN105 connector were, and how to get to them.   Turn off the power to your heat pump at the circuit breaker. After 2 screws holding the unit cover are in place, the cover can be removed by pressing in around the edges, and popping it off. You’ll want to snake the control wire through the unit so that it’s hidden when everything is installed.   

Make sure you’ve left plenty of slack on the control wire, so it does not pull off when you put the control board back. Now you can reverse the above process to put everything back where you found it. The rest of the manual was no harder to follow than these things usually are. It took me a few hours to figure this out… hope I can save a few readers the aggravation.Adding central air to house without ducts Q: I saw a ductless air conditioning system used in an older house that did not have a forced air furnace. How does this work? Mark, North St. Paul, MN A: Richard Trethewey replies: A ductless air conditioner, also called a mini-split system, has two major components: a unit mounted on an inside wall that delivers cool air to the room and a unit mounted on the outside of the house. A pair of refrigerant lines run between the two, one delivering electricity, the other taking away condensate (water). The system also has thermostatic control and a variable quiet blower.