HLR modules clean the air in buildings so that indoor air can be safely recirculated. This allows outside air requirements to be reduced by up to 85% using ASHRAE’s Indoor Air Quality Procedure (IAQP). The reduction of required outside air decreases project first costs by allowing for HVAC system downsizing. 

Lowering outside air requirements using HLR technology and ASHRAE’s Indoor Air Quality Procedure (IAQP) reduces the load on HVAC systems, which in turn saves energy, reduces carbon emissions, and extends equipment life. This is because less outside air needs to be heated in the winter and cooled in the summer before it is circulated throughout a building. Lower outside air requirements also make it easier and less expensive to control humidity. Deploying HLR modules with ASHRAE’s IAQP can deliver up to 40% HVAC energy savings.

HLR modules improve indoor air quality, removing contaminants generated by building materials, furniture, and cleaning agents, and by reducing the intake of outside air that is often polluted with exhaust from highways and airports, smoke from industrial parks and wildfires, pollen, and ozone, which is a known carcinogen.

Reducing load on HVAC systems by cleaning the air in buildings so that it can be safely recirculated and outside air requirements can be reduced significantly lowers the carbon footprint of buildings by making the HVAC system more energy efficient. Buildings account for approximately 40% of global carbon emissions, and heating and cooling is the single largest energy consumer and contributor to their emissions.