Participate in the Advanced Rooftop Unit Campaign and realize energy and cost savings of 30 to 50% on your rooftop units

Older, inefficient commercial rooftop unit (RTU) air conditioning systems are common and can waste from $1,000 to $3,700 per unit annually, depending on the building size and type. By replacing or retrofitting them, you can save money, improve your energy efficiency, make your building more comfortable, and help the environment. The Advanced RTU Campaign (ARC) encourages commercial building owners and operators to replace their old RTUs with more efficient units or to retrofit their RTUs with advanced controls in order to take advantage of these benefits. Contact us if you are a member and would like to get involved.

What are the benefits of joining?

ARC provides building owners and operators with access to information and expertise to lower facility operating costs while maintaining or improving building occupant comfort. Joining the campaign allows you to:

  • Leverage campaign resources and technical expertise in evaluating savings opportunities
  • Stay informed on innovative RTU technologies and resources produced through the campaign
  • Gain recognition, achievement awards, and participate in case studies (pending submitting documentation of implementing a replacement or retrofit)

How do I participate in ARC?

Joining the campaign means making a pledge to evaluate and implement an RTU replacement or retrofit.

  • Join the campaign today at no cost as a pledge to evaluate existing RTUs, implement a replacement or retrofit, and share savings with the campaign
  • Agree to be listed on this website as a participating organization
  • Evaluate your energy savings potential and share this information with the campaign
  • Submit documentation of RTU replacements or retrofits to earn an ARC Achievement Award that demonstrates your leadership in building energy efficiency

RTU Evaluation Methodology

New technologies for replacement and retrofits of existing rooftop air conditioning units offer tremendous savings opportunities. To help take advantage of those opportunities, ARC has developed a set of resources built around a streamlined RTU evaluation methodology.

  • Initial RTU Inventory: Use the RTU Inventory Spreadsheet to gather basic information (i.e., number, size, age, general condition, etc.).
  • Preliminary Screening: Organize RTUs into bins for “retrofit,” “replacement,” “no action,” or “needs further analysis” according to the results of the initial inventory and the guidance provided by the Decision Tree for RTU Replacements or Retrofits.
  • Detailed Inventory: Use the detailed fields in the RTU Inventory Spreadsheet to gather additional information (i.e., controls, usage patterns, features, etc.) for additional analysis of the RTUs identified for retrofit, replacement, or further analysis.
  • Field Evaluation: Use the RTU Field Evaluation Checklist to conduct a visual-based field evaluation to further refine the preliminary analysis.
  • Analysis: Perform energy and economic analyses to prioritize potential RTU improvements and to make the business case for taking action. This step may continue throughout the project planning and procurement phases, and often requires several iterations to evaluate possible combinations of manufacturers, efficiency levels, sizes, and RTU configurations. Several resources are provided to assist with this analysis: RTU Incentives Database, RTU Comparison Calculator, 179D DOE Calculator, RTU Sizing Guidance, and ARC Case Studies.
  • Project Planning: Develop a plan for replacements and retrofits, which may involve working directly with a manufacturer, an Energy Service Contractor (ESCO), a full service engineering company, or an HVAC contractor. See the list of ARC Supporting Partners for manufacturers and service providers.
  • Procurement: Prepare a procurement specification(s) for replacement or retrofit of RTUs. Incorporation of quality installation and quality maintenance requirements in the procurement specification is recommended; see sample specifications for guidance.
  • Measurement and Verification (M&V): Use the M&V Guidance Document to determine the appropriate level of M&V for the project and develop and M&V plan.