ERV Energy Recovery Ventilation Systems Reduce Long Term Costs and Improve Indoor Air Quality
Is the indoor air your breathe is as fresh and healthy as it can be?
As building science professionals have known for some time, an effective ventilation strategy is an absolute requirement for all homes. Mechanical ventilators exchange air inside the home with fresh air from the outside. This helps to reduce indoor pollution levels, and greatly increases the comfort level inside the home.
Many ventilation designs are including Energy Recovery Ventilators (ERVs) to improve the system efficiency. Besides providing controlled ventilation, ERVs are able to filter, humidify, dehumidify, heat, or cool the incoming fresh air. The most popular design of ERVs utilizes a desiccant wheel to remove both heat and a significant amount of moisture from the incoming air, which reduces the load on the air-conditioning system. But while ventilators and ERVs can add tremendously to the comfort and efficiency of a home, they must be installed correctly.
One of the more recent developments in the ‘green’ technology industry is the creation of environmentally-friendly buildings that use energy-efficient technologies to reduce power consumption.
Energy consultants point out that creating ‘green’ buildings and improving the air quality inside such facilities utilizing ERV can and do go hand-in-hand. ERV Systems that reduce demand for energy while improving ventilation are increasingly in demand.
ERV – Energy Recovery Ventilation systems saves energy, increases indoor air quality, reduces contaminates and odors.
The use of ERV technology “energy recovery ventilation systems,” or ERVs. Such systems are designed to reduce energy consumption and improve indoor air quality (IAQ) by capturing and recycling building energy to humidify, pre-cool or dehumidify incoming air.
Adding a whole house fan to your home can give you "cool" savings by reducing your central air conditioning use. Warm air will be drawn out through your attic and be replaced with cooler outdoor air, decreasing the need for air conditioning. If you install a whole house fan, it is important to have enough attic ventilation to allow a large flow of air to move through the attic. Also, in the winter, be sure to seal the fan opening to the attic with either an insulated cover or polyethylene sheet. (Attic fan, ERV)
By: YJ Draiman, Energy, Telecom and water conservation auditor/consultant
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