A typical building is designed with a pressurized ventilation system that sucks air into main air handler from outside. That outside air is heated or cooled, then forced into the space and it makes its way out again through leakage, open doors, etc. A balanced system processes indoor air differently. It draws air from the indoor space to the outdoors at the same time air from outside is being pulled indoors. The heat is transferred from the warmer air to the cooler air via a heat exchanger. In cooling season, the hot outdoor air transfers its heat to the indoor air heading out and vice versa in the winter. This means a lot of energy is saved by not having to condition new air coming in.
Not at all, our specialty is providing systems and design concepts for improving air quality in existing buildings. We represent and design systems that can improve ventilation by relying on windows and other access points to access the outdoor air for intake an exhaust ducts. We understand that cutting holes in your building is not an easy task, both physically and logistically.