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For climates with moderate heating and cooling needs, heat pumps offer an energy-efficient alternative to furnaces and air conditioners. Like your refrigerator, heat pumps use electricity to move heat from a cool space into a warm, making the cool space cooler and the warm space warmer. During the heating season, heat pumps move heat from the cool outdoors into your warm house; during the cooling season, heat pumps move heat from your cool house into the warm outdoors. Because they move heat rather than generate heat, heat pumps can provide up to 4 times the amount of energy they consume.
The most common type of heat pump is the air-source heat pump, which transfers heat between your house and the outside air. If you heat with electricity, a heat pump can trim the amount of electricity you use for heating by as much as 30% - 40%. High-efficiency heat pumps also dehumidify better than standard central air conditioners, resulting in less energy usage and more cooling comfort in summer months. However, the efficiency of most air-source heat pumps as a heat source drops dramatically at low temperatures, generally making them unsuitable for cold climates, although there are systems that can overcome that problem.
For homes without ducts, air-source heat pumps are also available in a ductless version called a mini-split heat pump. In addition, a special type of air-source heat pump called a "reverse cycle chiller" generates hot and cold water rather than air, allowing it to be used with radiant floor heating systems in heating mode.
Higher efficiencies are achieved with geothermal (ground-source or water-source) heat pumps, which transfer heat between your house and the ground or a nearby water source. Although they cost more to install, geothermal heat pumps have low operating costs because they take advantage of relatively constant ground or water temperatures. However, the installation depends on the size of your lot, the subsoil and landscape. Ground-source or water-source heat pumps can be used in more extreme climatic conditions than air-source heat pumps, and customer satisfaction with the systems is very high.
A new type of heat pump for residential systems is the absorption heat pump, also called a gas-fired heat pump. Absorption heat pumps use heat as their energy source, and can be driven with a wide variety of heat sources.
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An estimated - and astounding - 139 million people viewed The Closing BellTM when representatives of the HVACR industry recently ended the trading day at the New York Stock Exchange while standing on a podium before a banner that proclaimed "Air Conditioning and Refrigeration Appreciation Days."
Looking down from 20 feet above the floor of the Exchange at hundreds of traders cheering The Closing Bell prompted thoughts about how things have changed since approximately a century ago when the Exchange became one of the first major institutions in American to install air conditioning and only a few hundred people would have viewed the closing.
Thanks to comfort cooling, electronic equipment throughout the historic stock exchange building flashed data that detailed trading of more than a billion shares on August 9. Cable and TV broadcasts brought the bell closing scene to millions of offices and homes, and within minutes a picture of the event was on the Web site of the Air-Conditioning and Refrigeration Institute at www.ari.org.
Fortuitously, the Dow Jones Industrial Average was up for a fourth straight day. There was happiness on the floor and among the 11 industry representatives as we celebrated shipment of the 130 millionth central air conditioner since the founding of ARI in 1953.
But what would be the mood in the trading room and how long could heat-sensitive computers function without conditioned air? What would happen to telecommunications equipment without humidity control? How could computer chips be perfected without clean rooms? What would be the impact on productivity if the clock was turned back to the days when temperatures in the 90s emptied offices and factories? How would food and medicine safety and supply be affected without modern refrigeration and refrigerated transport?
Thanks to an infrastructure built up over decades - and the innovative contributions of men and women in our industry who care about improving the quality of life - people live, work and play in a vastly different world from a century ago.
From a novelty for moviegoers at theaters in the 1920s to modern-day, high-tech manufacturers' clean rooms, glass skyscrapers and malls, air conditioning is a defining technology. It has transformed America and many parts of the world.
Yet our contributions are largely taken for granted. With air conditioning available to 83 percent of American households, it is becoming almost as common as water and electricity. You only miss it when the electricity goes off or the unit dies of old age.
I believe the industry would sell more equipment if specifiers, building owners and consumers better appreciated our products, and also the people responsible for manufacture, sales, distribution, installation and maintenance of the equipment.
The New York Stock Exchange Closing Bell ceremony was fledgling step toward elevating awareness about the industry. But a meeting in Chicago last month by an industry-wide group of manufacturers and contractors may have more lasting impact.
Working collegially at a meeting dubbed the "Awareness Summit," they are exploring the messages and delivery mechanisms by which the HVACR industry can raise its profile in positive ways with target groups. We have an extraordinary message of achievement. And, new and better ways are evolving to provide more comfort and improved health from more efficient equipment operating at lower cost in harmony with the environment.
It's cool to care about our customers and the environment and we do. There will never be a better time to build on our message of accomplishment with an industry-wide campaign that reminds the world of how our equipment improves the quality of life.
Downloadable software- cheap oem software.
Modern furniture- Modern bedroom furniture
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Ductless Depot: Your Best Choice in Ductless Split Air Conditioning Systems
 Ductless Split Air Conditioner & Heat Pump products offer wide versatility in solving your cooling and heating requirements. The Indoor unit (evaporator) is mounted inside the room, enclosed in a handsome space saving cabinet. It is connected to the outdoor unit (condenser) via refrigerant lines & inter-unit wiring through a 3 1/2" opening in the wall. Since no ductwork is required, installation is simple. fast & efficient. There is no need to use up window space or cut large openings in existing walls, which could undermine the integrity of your structure, and even pose security risks. Since the Rotary compressor is located in the outdoor unit, compressor operating noise is virtually eliminated from the indoor. The indoor unit has been uniquely designed to provide Whisper Quiet operation while delivering comfort throughout the room(s). In addition, rotary compressors provide efficient, powerful cooling at the lowest noise levels in the industry.
 Microprocessor-controlled Operation
Microprocessor control ensures that the temperature and humidity levels in the room are always comfortable.
 Wireless Remote Control
Infrared Remote Control with an easy to read LCD Display, gives the user the capability to adjust and set: temperature, sweep (louver control), fan speeds, timer, night setback and more, for complete automatic operation.
 Dry Mode
By coupling compressor and fan operation intermittent operation can be precisely controlled according to room temperature, so that air is efficiently dehumidified.
 3 Fan Speeds and Automatic Fan Operation
Convenient microprocessor control automatically adjusts fan speed to High, Medium or Low. According to room temperature to maintain a comfortable airflow throughout the room.
Air Sweep Control
The air sweep function moves the louver up and down in the air outlet, directing air in a "sweeping" motion around the room and providing comfort in every corner.
 Louver Control
Louver can be manually set to the desired angle by remote control.
 Automatic Heating and Cooling Changeover
After setting the temperature and functions you desire, just relax. If the room temperature is higher than the set temperature, heating operation begins. During normal thermostat cycle operation, cooling and heating operations automatically change in accordance with set temperature, time and room temperature. (Heat Pump unit only)
 Night Setback Mode for Cooling and Heating
Cooling and DRY Mode: With the Night Setback Mode, the air conditioner automatically raises the setting temperature 2?F after 30 minutes, and then another 2?F after the next 30 minutes.
Heating Mode: With the Night Setback Mode, the setting temperature is automatically lowered 4?F after 30 minutes. This saves energy without sacrificing comfort and is ideal for gentle cooling and heating.
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Ductless (Mini-Split) Heat Pumps
Combine the flexibility of room air conditioners with the whole house cooling of central systems
Summary
Installing central air conditioning in a home that does not have forced air ducts can be difficult. Ductless mini-split heat pumps provide a unique solution to bringing central air conditioning into homes. By piping refrigerant to individual coils within air handlers mounted throughout a home (rather than a single refrigerant coil/air handler and central ductwork), mini-split heat pumps do not require ductwork for central air conditioning. Because the refrigerant lines take up much less room than do typical ducts, much less effort is required in installation in a retrofit.
Ductless mini-split systems combine the flexibility of room air conditioners with the whole house cooling of central systems. Although some systems provide heating and cooling, ductless mini-split heat pumps are usually installed primarily for cooling.
In a conventional heat pump, a single indoor unit (refrigerant coil and air handler) and single outdoor unit (condenser and compressor) serve the entire house. Air is cooled at the evaporator coil and distributed around the house via ductwork. In ductless systems, there is (usually only) one outdoor unit serving multiple indoor units (each containing a refrigerant coil and blower). Refrigerant is piped from the outdoor unit through small-diameter insulated refrigerant lines directly to individual rooms or zones. Cooled air is blown into the room by a fan in the individual evaporator units. The term "mini" is used to describe the small indoor units located in each room or zone.
While distribution energy losses in conventional systems have been estimated as high as 30 percent, distribution losses for ductless systems are about one to five percent.
PATH Attributes
Because they do not rely on ductwork (which is often leaky and can account for a third of the energy usage for heating and cooling), mini-split heat pumps can boost energy efficiency. The ability to control each zone separately can also contribute to energy efficiency.
Ease of Implementation
Ductless heat pumps are installed using conventional methods for heat pump/air conditioner installation. However, extra care must be taken to prevent refrigeration leaks and to ensure proper operating pressures.
Initial Cost
The cost of ductless heat pumps has declined as the technology has become established in the marketplace. A 2004 polling of ductless heat pump suppliers showed costs for ductless heat pumps to run between $500 and $900 per ton, depending upon the type of system and the number of zones desired per unit.
Operational Cost
Ductless systems can reduce energy costs for heating and cooling over conventional heat pumps. Cost will vary with equipment efficiency rating and the leakiness (and location) of ducts to which it is compared.
U.S.Code Acceptance
Few, if any, code or regulatory barriers limit ductless technology. The National Appliance Energy Conservation Act of 1992 requires that split systems have a minimum SEER of 10.0 and HSPF of 6.8. In 2006, these minimum requirements will increase to 13 SEER and 7.7 HSPF. The Air-Conditioning and Refrigeration Institute provides a list of air conditioners and heat pumps and their rated efficiency.
Field Evaluations
Not Applicable
Installation
Ductless systems are relatively easy to install. It takes two installers about a day to install a system having up to three zones. Wiring for power and controls is easier than with a conventional unit since wires can be run along with the refrigerant lines. Refrigerant lines from outdoor units can span up to one hundred feet to indoor units.
Indoor units are about six to eight inches deep and are mounted flush on a wall or ceiling, or recessed in a drop ceiling. A three-inch hole behind the unit is used for attaching wiring, refrigerant lines, control cables, and a condensate drain.
Warranty
Warranty varies with manufacture. A typical warranty is one year on indoor units and up to six years on compressors.
Benefits/Costs
Ductless system benefits include ease of installation-air ducts are bulky and require special structural attention, while split system piping can often be routed through walls and joists. Further, split systems allow zone control for increased comfort and efficiency. System energy losses are reduced because distribution takes place through insulated refrigeration lines rather than ductwork. Aesthetics are improved over window units and no windows need to be blocked. Each zone has its own thermostat, so occupants can modify temperatures in each zone.
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Ductless, mini-split-system heat pumps (mini splits) make good retrofit add-ons to houses with "non-ducted" heating systems, such as hydronic (hot water heat), radiant panels, and space heaters (wood, kerosene, propane). They can also be a good choice for room additions, where extending or installing distribution ductwork is not feasible.
Like standard air-source heat pumps, mini splits have two main components: an outdoor compressor/condenser, and an indoor air-handling unit. A conduit, which houses the power cable, refrigerant tubing, suction tubing, and a condensate drain, links the outdoor and indoor units.
The main advantages of mini splits are their small size and flexibility for zoning or heating and cooling individual rooms. Many models can have as many as four indoor air handling units (for four zones or rooms) connected to one outdoor unit. The number depends on how much heating or cooling is required for the building or each zone (which in turn is affected by how well the building is insulated). Since each of the zones will have its own thermostat, you only need to condition that place when someone is there. This will save energy and money.
Ductless mini-split systems are also often easier to install than other types of space conditioning systems. For example, the hook-up between the outdoor and indoor units generally requires only a three-inch hole through a wall for the conduit. Also, most manufacturers of this type of system can provide a variety of lengths of connecting conduits. If necessary, you can locate the outdoor unit as far away as 50 feet from the indoor evaporator. This makes it possible to cool rooms on the front side of a building house with the compressor in a more advantageous or inconspicuous place on the outside of the building.
Since mini splits have no ducts, they avoid the energy losses associated with ductwork of central forced air systems. Duct losses can account for more than 30% of energy consumption for space conditioning, especially if the ducts are in an unconditioned space such as an attic.
In comparison to other add-on systems, mini splits offer more flexibility in interior design options. The indoor air handlers can be suspended from a ceiling, mounted flush into a drop ceiling, or hung on a wall. Floor-standing models are also available. Most indoor units have profiles of about seven inches deep and usually come with sleek, high tech-looking jackets. Many also offer a remote control to make it easier to turn the system on and off when it's positioned high on a wall or suspended from a ceiling.
Split-systems can also help to keep your home safer since there is only a small hole in the wall. Through-the-wall and window mounted room air-conditioners can provide an easy entrance for intruders.
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Ductless split air conditioning offer higher efficiency and reduced noise without a large hole in the wall or an open window. By separating compressor and condenser fan from indoor blower, the noisiest components are outside and away from the room. The indoor part of the ductless air conditioner has remote control capabilities and a timer to cycle the system only when needed.
Since mini split air conditioners have no ducts, they avoid energy losses associated with ductwork of central forced air AC systems. Duct losses can account for a significant portion of energy consumption for space conditioning, especially if the ducts are in a unconditioned space such as an attic.
Ductless air conditioning offers Higher Efficiency vs. window air conditioning, less noise, and no costly ductwork.
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