Selecting ERV and HRV systems gets easier for builders
Choosing the right ERV or HRV for a building project doesn't have to be complicated.
In today's tight new homes, full-time mechanical ventilation is a necessity. But what is the most cost effective way to ventilate while retaining the energy used for heating and cooling?
At the 2016 AHR Expo, Dominic Blanchette, global director of engineering - Indoor Air Quality for Broan-NuTone LLC, discussed the process that building professionals can use to help them select the right product for the project.
Blanchette reviewed the functions of air exchangers with Heat Recovery (HRV) and Energy Recovery (ERV) technologies.
Depending on the home's geographical location, the project will require a Heat Recovery Ventilator (HRV) or an Energy Recovery Ventilator (ERV). The HRV is used in colder climates, where it keeps the home supplied with a steady flow of fresh outdoor air. As stale, warm air is expelled, the heat recovery core warms the incoming fresh, colder air before it is distributed throughout the home. The result is a constant supply of fresh air, no unpleasant drafts and greater home comfort. In addition to heat recovery and improved air quality, the HRV provides necessary ventilation while controlling excess humidity.
ERVs are suitable for all climates including those with hot, humid summers, where homes are air-conditioned and possibly dehumidified during large parts of the year. As with the HRV, the ERV recovers the heat in cold season; however, it also recuperates the energy trapped in moisture, which greatly improves the overall recovery efficiency.
Read more about ERV and HRV technology.
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