Ductless split systems provide targeted heating and cooling comfort when conventional central HVAC equipment is too costly or impractical to install.
The ductless air conditioner is a compact, energy efficient cooling system that is designed to cool a single room or zone without the use of air ducts. It is a popular option for older homes without ductwork, smaller homes, and add-ons where ductwork is not feasible.
As consumers and businesses look for cost-effective alternatives to window units, PTACs (packaged terminal air conditioners) and inefficient ducted systems, ductless technology continues to gain popularity.
In the refrigeration cycle, low-pressure gas is 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.
- Ductless AC blows cold air directly into the one room/area it cools.
- Central AC blows cold air into a network of air ducts where it’s dispersed throughout the entire home.
There are two main elements in a ductless split system installation:
The outdoor unit has three primary components including:
- 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: This 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.
- Fan: The fan draws air through the condensing coil and helps dissipate the stored heat energy into the outdoor environment.
Ductless indoor units include a fan and evaporator coil in the same enclosure. Each unit provides point of use air conditioning wherever it is installed.
Whether used in single or multiple zone configurations, the indoor units can be strategically positioned to heat and cool one room or an entire building. The convenience of ductless technology completely eliminates the need for inefficient ductwork.
It is important to be aware of the distinct advantages of split system indoor fan coil units. Conventional central air conditioners use a single air handler, blower and evaporator coil, which is usually installed in a garage or equipment closet. A complex air distribution network provides an avenue for the delivery of conditioned air into each room of the building from a single point of origin. Ductwork is often inefficient, restrictive, dirty, leaky and noisy.
When comparing ductless ac vs. central ac vs. window unit, ductless split systems are quieter, more efficient and offer greater levels of comfort.
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