Outside Air Dampers with Energy Recovery | Energy Efficiency
The dampers straight across are outside air dampers or make-up air coming from an energy recovery unit. According to the mechanical code, commercial buildings require a certain amount of fresh air from the outside to maintain good IAQ for the occupants.
An energy recovery unit allows it to be conditioned before being introduced into the building. Other methods include using enthalpy calculations to open economizer dampers and/or CO2 control of the dampers. (more…)
Dust Smoke Filter Banks | Indoor Air Quality
How Electronic Air Cleaners Work | Indoor Air Quality - The electronic air cleaner cleans the air electronically. Most electronic air cleaners (EACs) have two ways of filtering the air. In addition to cleaning the air electronically, electronic air cleaners have metal mesh pre-filters. Furthermore, these pre-filters catch large particles that the electronic portion of the cleaner would not be able to filter effectively. It is necessary to ensure these pre-filters receive cleaning on a regular maintenance schedule along with the electronic cells inside the electronic air cleaner. Additionally, electronic air cleaners use a minimal amount of energy and only use power when the fan is running.
HVAC Indoor Air Quality - Indoor air quality is very important to our health. There are not many people who worry about indoor air quality unless they have asthma or another respiratory problem that can easily be aggravated by indoor pollutants or bad indoor air quality. If we examine the things in our air, we are surprised by the things in the air which can have a dramatic effect on our health. People who suffer from respiratory health problems usually see increased health when they institute a good indoor air quality program that can include installing electronic air cleaners and ultra-violet air cleaners along with a good air filtration system. 
