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Ductless Installation in Your Virginia Home: What's Involved

Ductless mini splits have rightfully earned a reputation for delivering efficient cooling for homes in warmer climates, but their reputation hasn't been as distinct for delivering heating power to homes in regions with cold winter weather. Take it from the company that developed ductless systems more than 30 years ago; new ductless systems can keep homes comfortable through the highs and lows of any season in Virginia -- if your specialized Mitsubishi Electric contractor is performing the ductless installation.

Practical Heating and Cooling Solutions

Ductless mini splits are air-to-air heat pumps and air conditioning systems with components designed to fit practically anywhere inside and outside the home. Ductless installation is practical for a host of home improvement projects including:

  • New additions and remodeled attic and basement space
  • Places where extending air ducts isn't feasible because of space or budget constraints, and for homes without existing ductwork
  • Installation to deliver comfortable temperatures to existing rooms, such as a home office or rec room, where personalized temperatures are a benefit
  • Cooling for multiple stuffy upstairs rooms
  • Protecting stored household items in the garage, or to keep your garage workshop comfortable


Designed for All Seasons

Like their central system counterparts, ductless mini splits deliver efficient heating and cooling by manipulating refrigerant temperature and pressure to move heat from one location to another. Since the performance of the ductless system is affected by indoor and outdoor temperatures, it's wise to button up your home to provide optimal conditions for ductless installation.

Heat naturally seeks to move to a cooler place. This is why rapid heat gain and heat loss occur in leaky and poorly insulated homes (and it is the same reason why extremely cold refrigerant can extract heat from the outside air on cold winter days).

Sealing air leaks around doors, windows and between the living spaces and the insulation barrier (e.g., attic hatch) hinders heat gain and heat loss via air infiltration. Home insulation should be inspected for damage, such as mold and mildew or strewn loose fill. Install attic insulation up to an R-value of 60 (R-value represents heat resistance) in the attic, R15 in wall cavities and R13 in the floor above unconditioned crawl spaces and basements.

The Nuts and Bolts of Ductless Installation

A successful ductless installation must include a professional heating and cooling load analysis to determine the correct size of ductless mini split system to install. Your Mitsubishi contractor uses a sophisticated software program to input dozens of home design elements, including square footage, building materials, sun orientation, occupant energy usage habits and many more.

Since ductless mini splits are affected by indoor and outdoor temperature and heat gain and heat loss, the load calculation must be accurate. If your ductless installation is too large for the living space, the system cycles on and off much too frequently. This creates comfort issues with temperature and humidity, and hinders optimal performance from components and refrigerant heat exchange.

A ductless installation which is too small for the living space to be heated and cooled strains the ductless system to reach and maintain the temperature setting. Mitsubishi Electric ductless systems are outfitted with sophisticated sensors which scan rooms top to bottom for temperature readings. A unit which is too small won't be able to cool the entire living space evenly, which will cause the system to run constantly.


Ductless Installation: The components


The components of a ductless system are housed within an outdoor cabinet (condenser/compressor), a thin conduit (refrigerant tubing, condensate drainage line and power cable) and one or more indoor air handlers (evaporator and air-purification components).

  • The outdoor cabinet offers a compact size for easy positioning in practically any space you decide for best aesthetics, or to leverage better efficiency by locating it as close as possible at an outer wall opposite the corresponding indoor air handler. 
  • Mitsubishi ductless systems are designed to offer homeowners every advantage for their ductless installation, including a flexible conduit that goes to great lengths (over 100 feet) if needed to connect the outside cabinet to each indoor air handler. 
  • The indoor air handlers may be mounted to any ceiling or hung flush inside a suspended ceiling. Other common ductless installations include wall mounting or floor mounting. These options help homeowners custom design their ductless systems to suit any room and need.

For the best ductless installation of the best ductless mini split systems, contact a Virginia Mitsubishi Electric contractor near your Virginia home.


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