Cool-down rooms where AC can't reach

[Mini-split Ductless A/C <Paul@xxxxxxxxxxxxxx>]

https://www.energystar.gov/ia/partners/publications/pubdocs/HeatingCoolingGuide%20FINAL_9-4-09.pdf

Consumer Homeowner Reports

Ductless Mini-Split Cooling

Over the past few years we have all observed the fascination with ductless "mini-split" AC systems.

What is it?
Ductless AC can cool (or heat) multiple rooms to any temperature without the need for ductwork. It's a better option than window units or when sometimes central air can't keep up with the heat, ductless AC can handel any type of heat.

Compare and learn more about ductless ac with ad listings >

 

These units can be hidden out of the way. They don't need to hang out of the window. You can use a remote control to control them. They can be set to any temperature in any room.

Set any Room to any Temp Homes without ductwork this may be the only solution to cool your home. Since they use no ductwork they are much more efficient than central air systems. Compare Types » ad-listings

Because of the predicted heatwaves this summer now is the time to start thinking about staying cool. It's forecasted to be a hot and humid summer.

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Ductless split systems provide targeted heating and cooling comfort when conventional central HVAC equipment is too or impractical to install. Widely adopted in Europe and Southeast Asia, ductless technology continues to gain popularity in the U.S. as consumers and businesses look for cost-effective alternatives to window units, PTACs (packaged terminal air conditioners) and inefficient ducted systems. Basic Components of a Ductless System So, how does ductless air conditioning work? In many respects, a ductless mini split operates in a similar manner to its ducted counterpart. In the refrigeration cycle, low-pressure gas i s transformed into high-pressure gas by the action of a compressor. The heat is dissipated into the outdoors by the action of a forced air fan. The refrigerant then becomes a high-pressure liquid, and it is again changed into a low-pressure liquid by a metering device at the evaporator coil. Heat energy from the indoor air is absorbed by the refrigerant, and the resulting cooler air is pushed into the living area by the internal blower. The resulting low-pressure gas is moved through the suction line back to compressor, and the cycle is repeated again. http://eetd.lbl.gov/ee/ee-1.html There are two main elements in a ductless split system installation: Outdoor Unit The outdoor condensing unit houses three primary components including: The Compressor: The compressor is the heart of any air conditioning system. It is also the most expensive individual part. The device condenses low-pressure gas into high-pressure gas, so the thermal heat transfer process is completed more efficiently. Condensing Coil: A lattice-like structure comprised of numerous aluminum fins, the condensing coil cycles hot refrigerant and accommodates its conversion from a high-pressure gas to a high-pressure liquid. The Fan: The fan draws air through the condensing coil and helps dissipate the stored heat energy into the outdoor environment.