Concealed Duct Mini Splits: The Ultimate Guide
If you want a seemingly invisible form of zoned air conditioning, the mini-split concealed duct unit may be just what you're looking for.
Concealed mini-split units, sometimes called hidden mini splits, can be used to cool or heat spaces that would otherwise be difficult to condition, such as:
- Historical homes
- New additions
- Sunrooms
- Basements
The unit itself can be installed out of sight in an attic, crawlspace, closet, or utility room and can use short duct runs to deliver air to more than one register.
When to Choose a Concealed Duct Unit
If you want to condition a family room or dining room as inconspicuously as possible, a concealed duct unit is a great choice. Concealed duct units are hidden behind the scenes, with only the grille covers visible.
Using their higher-efficiency ducts, concealed units can provide consistent coverage in large rooms by utilizing short duct runs to disperse the air through various outlets. They can even provide comfort to an adjacent, smaller room.
With concealed duct mini-split systems, you don't have to worry about using old ductwork from inefficient forced-air systems.
Installing a Concealed Duct Unit
You can install a concealed duct unit virtually anywhere, although you should hire a professional who's familiar with mini split system installations. Self-installs may violate the warranty on your unit.
If you're installing it in an attic or a crawlspace, you need to ensure the space is insulated and conditioned like the rest of your home. Otherwise, you can build an enclosure around the unit and cover the outside with insulation to prevent condensation.
When using ducts to deliver air to multiple locations in the same room, you will need transition ducts and additional outlet grilles. If you're incorporating a return air vent, you will need a filter to protect the unit from dust and contaminants.
When mounting the concealed mini split flush with the wall's surface, ducting may not be needed, but you'll still want to purchase a grille to protect the unit and provide a finished look.
Other Considerations
Consider these additional features and possibilities when setting up your hidden mini split system.
Condensate: All mini-split concealed duct units feature a condensate removal pump that removes water resulting from cooling warm, humid air. To drain the condensate, attach a drain pipe or PVC to the pump.
Controls: Concealed duct units typically have a wall-mounted control for adjusting temperature and output.
Quiet Performance: Besides being out of sight, many concealed duct units have a quiet setting that reduces fan noise. You won't even know it's there.
Fresh Air Option: You can connect your concealed duct unit to an energy recovery ventilator (ERV) or heat recovery ventilator (HRV) to provide fresh, conditioned air to your space.
Hot Start: Some concealed duct models prevent cold drafts by delaying fan operation until the heat exchanger has warmed up.
If you have additional questions, don't hesitate to reach out for help from our team of mini split experts!
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