Decentralized energy recovery ventilation (ERV) systems provide fresh, clean air to your building, without losing valuable heat (or coolth).
Decentralized systems do not require ducting and are therefore much easier to install. This makes them perfect for retro-fittings, or buildings that simply do not have space to install a centralized ducting system (for a new build, or existing home with ample access to a roof or floor cavity, centralized system may be more suitable).
Here’s How it works in Warm, Humid conditions:
Fan blows Fresh outside air in
Ceramic core absorbs heat and some moisture
Fan changes and blows cooler/ dryer inside air out
Ceramic core gives up heat and moisture to outgoing stale air and when blow in fresh air again the ceramic core is cooled down that cool down the Fresh outside air into your home.
*This does not guaranty dehumidication is not needed, but is the best way to ventilate, with fresh outside air and reduce moisture migration in while doing so.
The single room ERV units can operate pairs: as one unit draws fresh, filtered air in to the building, the other unit exhausts stale air and other toxins to the outside. After a set time period (usually 70 seconds), the units both reverse their cycle and swap their roles. This continuous switching allows the building to breathe in and out, much like a set of lungs.
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