The idea behind an HRV system is to bring fresh air into a home without causing excessive demand on the heating system even if it’s cold outside.
As you can see from the picture, the basis of the HRV system is a heat exchanger or heat recovery unit. As the incoming cool fresh air is moved through the unit, it is heated by exhaust air that is already hot. The exhaust air has been drawn out of circulation in the rooms via the existing cold air return vent and ducting. It is designed to allow the heat to transfer without mixing of air sources. The now warm, fresh air is then connected to the heating system and circulated throughout the house. Once the exhaust air has done its job it is vented from the house.
On our air filtration page, we have information on how HEPA filters at times restrict air flow. Luckily, a company called LifeBreath has come up with a solution. Using their Turbulent Flow Principle, their HEPA filters claim to operate without slowing down the air flow. This is part of their HRV system.
R&B Plumbing has extensive experience in this type of ventilation as the North Shore is an ideal climate for it. An HRV system is an excellent and very cost effective addition to any home. It’s also a very natural way to improve air quality. Ask R&B if this type of system is right for your home.