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Ductless Mini-Split Air Conditioners: Here's How They Work

Mitsubishi Electric ductless mini-split air conditioners deliver a multitude of benefits, making them a premiere choice for supplemental or primary cooling for many situations. If you’re the savvy owner of a ductless system, or if you’re thinking of installing one, learn how to leverage maximum energy savings and enjoy personalized home comfort with a low-maintenance ductless mini split.

How Ductless Mini-Split Air Conditioners Work

Ductless mini-split air conditioners are redesigned split systems that utilize a flexible conduit to connect the outside compressor/condenser to indoor air handlers. You may choose a system which connects one, four or more indoor air handlers to one outside unit. The conduit contains all of the necessary power supply, refrigerant tubing and condensate suction which makes ductless cooling possible.

The discreet conduit is typically installed inside walls and other hidden interior spaces, requiring only a small hole through the drywall of interior walls or ceilings, or hung flush in hang ceilings to connect to the air handler(s). Also, the conduit needs just a small hole in your home's shell to run the conduit to the compressor/condenser unit.

The air handlers, which contain the evaporator coil, are typically mounted on walls, ceilings or floors, depending on each situation in regards to conserving living space and promoting optimal airflow. The sleek air handlers cool air in the same manner as a conventional air conditioner, except that since the air handlers are installed in the rooms or spaces which need to be cooled, ductwork is not needed to channel airflow. The air already contained in the room or area is cooled, so there is no loss of heat energy often associated with poor duct design.

To cool a room or area, the air handler pulls airflow across the evaporator coil, which induces heat extraction and moisture removal from the air. Cooled air is evenly circulated to the living space, and moisture condenses on the coil and drains through the condensate line. The refrigerant flows to the compressor in preparation for heat release at the condenser.

Ductless Zoning Control

Each air handler provides separate temperature control for customized cooling to the specific zone (room or area). This is one of the great benefits of ductless mini-split air conditioners, and makes these systems the ideal cooling solution for many situations.

Zoned temperature control offers the homeowner the ability to cool a room or area as needed. If you have a home office, for example, you can enjoy your favorite temperature without running the cooling system for the entire house, if that’s what you prefer.

Mitsubishi Electric Advanced Technologies

With advanced technologies from Mitsubishi Electric mini splits, a zone's temperature is maintained near exact thermostat setting for comfortable cooling. Inverter technology makes possible precise refrigerant control by the multi-speed compressor. Refrigerant heat extraction and release is further optimized with a multi-speed air handler working in conjunction with the inverter-driven compressor for maximum energy efficiency and comfort.

Advanced system control and smart processors put Mitsubishi Electric ductless systems at the forefront of innovative design and system sophistication. Multiple sensors regulate coil temperatures for peak performance. Hot-Start technology momentarily delays airflow to allow the refrigerant to reach optimal operating temperature.

Sensors scan different areas of a room to detect uneven temperatures (hot and cold spots). Airflow and temperature are adjusted in real time, maintaining even and comfortable temperatures through the zone. Smart Controls for programmable settings from wall controls or convenient remote-control operation are also available.

All of these advanced features combine to drive ductless mini-split performance like never before, providing ample cooling even when outside temperatures top well over 100 degrees.

Enhanced IAQ

Household occupants with respiratory issues, such as asthma or allergies, can find relief from allergens, odors and other airborne contaminants and triggers with the enhanced air filtration systems of ductless mini-split air conditioners. Mitsubishi Electric ductless systems offer multiple layers of air filtration with durable components that are designed to last years.

Room Additions, Retrofits and More

With compact components and a flexible conduit providing a channel for refrigerant flow, ductless mini-split air conditioners easily install in just about any space. This makes ductless cooling an attractive option for room additions and retrofits, where extending ductwork isn’t practical or cost effective.

In fact, with zoned temperature control, ductless mini-split air conditioners may provide better energy savings for a nice return on investment, especially when compared to extending bulky ducts which require maintenance and are prone to energy losses.

If you would like more information about ductless mini-split air conditioners, contact a Mitsubishi Electric Cooling & Heating contractor near your home today.


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