The heat recovery ventilator, commonly referred to as an HRV, works by continuously replacing stale indoor air with fresh outdoor air to make your home more comfortable, cleaner, and healthier.
An HRV will increase the efficiency of your home by capturing heat from the stale air leaving your home and using it to preheat the fresh air coming into your home during the heating season. Likewise, during the cooling season, HRVs will remove some of the heat from incoming air and transfer it to the outgoing air.
When an HRV exchanges stale air with fresh air it will also get rid of many of the unwanted air pollutants in your home, such as excess moisture, moulds, chemicals and bacteria.
The energy recovery ventilator, commonly referred to as an ERV, is a type of HRV that can exchange both heat and moisture.
When there is more humidity outside of your home than inside, an ERV will limit the moisture coming into your home. Similarly, when there is less humidity outside of your home than inside, an ERV will limit the moisture being expelled from your home.
Energy recovery ventilators increase your home’s efficiency by exchanging air in the same way as traditional HRVs and by controlling moisture. ERVs are able to recuperate energy trapped in moisture and can also reduce the work required by your HVAC system because humid air feels cooler at the same temperature as dry air, allowing comfort levels to be controlled using only moisture control.
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If your winter climate is extremely dry, ERVs recover some of the moisture that would leave your house through a regular HRV. This helps you maintain a comfortable humidity level within your home, avoiding static electricity, sore throats and other discomforts caused by air that is too dry.
An HRV is a ventilation device that helps make your home healthier, cleaner, and more comfortable by continuously replacing stale indoor air with fresh outdoor air. New homes built since 1977 are more airtight, which helps save energy but can make the inside air stale. To complement this airtightness, modern homes use HRVs to distribute fresh air throughout the house.