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The Center for Environmental Energy Engineering (CEEE) at University of Maryland, the Climate & Clean Air Coalition (CCAC), Centro Studi Galileo, and the Institute for Governance & Sustainable Development (IGSD) have released the Handbook of Best Practices: Room Air Conditioner Installation for the Lowest Carbon Footprint, which explains how to appropriately install high-efficiency room air conditioners (RACs) for the highest energy efficiency and lowest carbon footprint over the products’ lifetime. This comprehensive, open-source guide has been created for HVAC professionals and their business, government, and residential customers.

With climate change and energy efficiency at the forefront of global conversations, the importance of minimizing the carbon footprint of everyday appliances cannot be overstated. Air conditioning creates comfortable work and living spaces, and in climate hotspots is becoming necessary for human survival. RACs also place significant demands on national energy grids and contribute to greenhouse gas emissions. By focusing on optimal installation, the Handbook offers practical steps to mitigate these environmental impacts.

Topics covered include:

  • Energy-Efficient Installation Techniques: Explains how the placement and setup of your AC unit can enhance energy efficiency, ensuring that RACs run at peak performance while using less power.
  • Choosing the Right RAC Unit: Takes an in-depth look at selecting high-efficiency, eco-friendly air conditioners that are best suited for different climates and building types.
  • Refrigerant Management: Reveals the latest developments on sustainable refrigerants that minimize harmful emissions and promote cooling with lower environmental impact.
  • Smart Thermostat Integration: Provides Best Practices for integrating RACs with smart technologies to optimize cooling cycles for reduced energy usage.
  • Maintenance and Longevity: Gives tips for maintaining RAC systems to ensure they remain efficient over time, helping to extend their life cycle and reduce the need for replacement units.

The authors welcome suggestions from RAC experts regarding edits and additions as the Handbook is improved and made available for translation to other languages.

In 2019, the Government of Morocco with industry and non-governmental partners organized the Morocco Banker’s Air Conditioner Buyers Club with an ambition to gain access at a competitive and affordable cost to room air conditioners (RACs) with high-efficiency and low global warming potential (GWP) refrigerants as mandated globally by the Montreal Protocol. In 2020 the Government of Morocco and the Morocco Banker’s AC Buyers Club have decided to replace older RACs with next-generation technology using more climate-friendly refrigerants. This report provides the indicative finding that the RAC replacement program planned by the Government of Morocco and partners will reduce power consumption by up to 70% with additional economic and climate benefits from the recovery and destruction in local cement kilns of obsolete HCFC and HFC GHG refrigerants.

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