Residential air conditioners are sized from the smallest conveyable window unit up to huge central air systems that can weigh 5 tons or more. Self contained units have the advantage of low first cost, mobility and easy installation, while central air units cool larger volumes at lower comprehensive operating costs. Bridging the gap in the middle of these extremes is the split ductless air conditioner.
Ducted systems use the same ductwork that forced air heating uses by plainly adding a cooling unit to the furnace supply, allowing coverage for an whole living space. Equivalent cooling with window units would want an air conditioner in almost every room. Unfortunately, the first outlay for a central air system, along with maintenance and mend costs makes this solution prohibitively costly when air conditioning isn't a high priority. For instance in motel rooms that may or may not be rented any singular night or in areas of the country with shorter or cooler summers.
Air Conditioner And Heater Units
The split ductless theory uses the same principle of cooling that central air does, but is much smaller and much less costly to install. It consists of an inner unit that is wall mounted with a fan and cooling coils that is fed by an outer unit (hence the "split"). No air is exchanged in the middle of the two parts, only refrigerant. This means that no ducts are required; each split unit serves one room or area. On the inside are a cooling coil and a fan. On the covering is a compressor and heat exchange. No air is exchanged in the middle of the two. A second line for condensation drainage can also be installed in parallel with the refrigerant line2.
Whynter 12,000 BTU Dual Hose Portable Air Conditioner, Frost White (ARC-12SD) Best
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Whynter 12,000 BTU Dual Hose Portable Air Conditioner, Frost White (ARC-12SD) Feature
- 12,000 BTU cooling
- Dual hose operation
- CFC free R-410A refrigerant and lead free RoHS compliant components
- Digital and remote control
- Three operational modes: Air conditioner, fan or dehumidifier
Whynter 12,000 BTU Dual Hose Portable Air Conditioner, Frost White (ARC-12SD) Overview
This Whynter GREEN ARC-12SD portable air conditioner features CFC-Free R-410A refrigerant and lead free RoHS compliant components. It uses patented advanced auto drain technology, which uses and recycles moisture collected during the cooling process to produce cool air. The dual hose operation provides fast cooling of up to a 400 sq. ft. space (ambient temperature and humidity may influence optimum performance). 12,000 BTU Cooling, Three operational modes: Air conditioner, fan or dehumidifier, Digital and remote control,m LCDI (Leakage-Current Detection and Interruption) plug, Dehumidifying Capacity: 101 pints per day, Designed to provide quiet and efficient cooling to any room, with no permanent installation, 3 fan speeds, Carbon air filter and washable pre-filter, Full thermostatic control (61°F - 89°F), Casters for easy mobility, 24 hour programmable timer, Noise level (dBA): <56, Auto restart after power outage, Extendable exhaust hose (up to 49"), Upgraded Plastic window kit included, Window kit length: Max. 36", Maximum power consumption: 1100 W / 10.5 A
Customer Reviews
*** Product Information and Prices Stored: Jan 09, 2012 23:51:23
There are two main advantages of a split ductless theory over a window unit: the theory doesn't want a window and is mounted on any covering wall and because the compressor is outside, it is much quieter than self-contained window air conditioners. The major disadvantage is lack of portability - a split ductless theory is permanent (or nearly so).
Zoning
Because vigor efficiency is getting great attention, both for cost savings and environmental concerns, split ductless air conditioners are becoming more popular. They offer the ability to "zone" a house into separate areas and customize cooling needs for each area.
Zoning is done by using one covering compressor unit that feeds some interior cooling units, each in its own zone. Each zone can then be regulated with a separate thermostat and remote control. A bedroom which isn't utilized in the daytime can be set to a higher climatic characteristic and the door done to limit air circulation to the rest of the house. This saves on comprehensive use and subsequent cost. Central air systems cannot be controlled in this manner - they are whether "all on" or "all off."
Zones can also be added when an expanding is put on a house, provided the covering unit can take further capacity. Zones can also be switched on or off (as long as the total whole of lines in use remains within specifications) for when a guest is visiting (guest room) or other purposes.
One further consideration is that zones and capabilities can be added piecewise, so that the cost of factory can be spread out over one or more years.
Types and styles
Because they are meant to only serve a small room, split ductless systems are not made in large sizes. Customers prefer the unobtrusive nature of a toaster sized coil and blower fan. The available production in Btuh (British Thermal Units per Hour) is up to about 12,000. This is enough for a singular room or "zone." The lower capacity for private interior units can be dealt with by running complicated interior units to a singular covering compressor.
For example, one theory by Sanyo3 (Quad Zone 7/7/7/7 kBtu) runs four interior units (up to 7,000 Btuh each) to one covering compressor with a total capacity of 24,000 Btuh. A singular refrigerant line runs to each of the four units.
One style that is favorite with motels that have an covering wall is a aggregate heater/air conditioner set up in a baseboard style. In the summer months it runs as a split ductless air conditioner and in the winter months the cycle is reversed and the same unit then acts as a heater.
When used in this dual configuration the products are more properly called heat pumps - they "pump heat" whether into or out of the house. One consideration is the distance in the middle of indoor and outdoor units. Since pumping long distances uses more energy, and because refrigerant lines lose heat, the limit is commonly fifty feet. This is a consideration when inspecting locations for both indoor and outdoor units.
Prices run into the complicated thousands for a multiline system, but savings can be had because of less cost to install compared to central air systems and lower operating costs - while central air systems max out at a Seer (Seasonal vigor Efficiency Ratio) of 20, split air systems can go as high as 23. For comparison, a window unit will not exceed a Seer of 10 - 13. singular unit systems start at about ,0004.
Split Ductless Air Conditioners: Zoning, Types and StylesCoolerado Solar Powered Air Conditioning Demonstrator Tube. Duration : 7.00 Mins.Coolerado Solar Powered Trailer, run by 4 photovoltaic panels. Uses about 600 watts of electricity.
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