As we move in to winter in North America, the discussion at Zehnder America, Inc turns to the need for frost prevention in HRVs and ERVs.
With very cold air moving in one direction, and warm air carrying humidity from showers, cooking etc in the other direction, it is inevitable that frost can form in the heat exchangers of HRVs and ERVs.
With this in mind, we have several options for managing the prevention of frost, which can cause damage to the heat exchanger, reduce efficiency of heat recovery, and cause an imbalance of air flows which can potentially depressurize the home.
