Central Cooling Systems
Central cooling systems include central chilled water systems — which consist of chillers, cooling towers, and other equipment — or base-building condenser water loops that serve the entire building.
- Upgrade the chiller to a higher efficiency model.
- Optimize temperature sensors and controls for the chiller plant.
- Install a building management system (BMS) to better control temperatures based on sensor feedback from multiple occupant spaces.
- Monitor and calibrate supplemental cooling equipment, which are typically found in resident spaces.
- Install variable frequency drives on motors and pumps that distribute conditioned air and/or chilled water throughout the building.
Additional measures can improve the cooling system as a whole.
- Install insulation on pipes and ducts to reduce heat loss.
- Seal loose connections in ductwork to prevent air leaks.
- Ensure air filters are properly installed and free of debris to improve efficiency.
Non-Central Cooling Systems
Non-central cooling systems provide cooling to individual rooms or specific zones of a building. These systems include packaged terminal air conditioners (PTACs), window air conditioners, through-wall air conditioners, and air-cooled packaged units. In New York City buildings, non-central cooling systems are more common than central cooling systems.
- Replace old air conditioning units with newer, more efficient models.
- Install smart controls on air conditioners to automate temperature settings.
- Install unit covers or insulation on room air conditioning units.
- Install an air source heat pump to replace a packaged rooftop air conditioner unit.
Cooling System Resources