Zehnder America announces that it has completed the Exova laboratory third-party testing of the Zehnder ComfoAir 550 Heat Recovery Ventilator (HRV) with ComfoFond-L ground source heat exchanger. With 99% Apparent Sensible Effectiveness and 91% Sensibly Recovery Efficiency at -25 degrees Celsius/-13 degrees Fahrenheit, heating loads are drastically reduced in a cold climate. The combined power consumption of the HRV and geothermal heat exchanger is approximately 90 watts/hour. This is an extremely low power consumption considering beneficial heating load savings and comfort for its inhabitants. By capturing the free stored energy in the ground to pre-heat air entering the HRV, the fresh filtered air coming out of the HRV is within 2-3 degrees of the comfortable inside temperature. This is the case even when the outside temperature is well below freezing. This mitigates uncomfortable cold drafts during winter months Today’s buildings have become increasingly tighter and more insulated due to building codes and energy-efficiency awareness. Zehnder’s breakthrough Heat Recovery Ventilator with ground source pre-heater solution allows increasingly energy-efficient homes in cold climates to have a continuous supply of fresh filtered air, a comfortable indoor environment and a reduction of heating loads.
