Fresh air intakes were the answer to the situation. With fresh air movement controlled, we could move out stale, moist air and bring in fresh air. This created a better balance. Outside air is, however, just as cool in the winter and warm in the summer as it was.
So a method was developed to allow the warmed, outgoing air to heat the incoming fresh air. That method is accomplished with heat recovery ventilators. Simply put, heat recovery ventilators act much like automobile radiators. As the needed fresh air comes in, it can be heated through an exchange system up to an amazing 85 percent by the outgoing stale air.
This saves energy by utilizing air that has already been warmed and heating incoming air. As the outside air goes into heat recovery ventilators, it is kept separate from outgoing air. Only the heat transfers; the pollutants and humidity go out. Incoming air becomes warmed or cooled and the heating and cooling system does not have to work as hard.
Colder climates, such as ours in Massachusetts, get the most benefits from heat recovery ventilators due to longer winters than more southern climates. Energy savings can often be substantial by using the exhaust air to heat the fresh air.
More information can be found on heating efficiency at the Energy Star web site. You can also get the latest information on saving energy and money by visiting the Rodenhiser website at: www.rodenhiser.com. Our experts are trained in the latest heating and cooling technology and can tell you if an HRV would be right for your home.
Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems). For more information about heat recovery ventilators and other HVAC topics, download our free Home Comfort Solutions Guide.