Commercial space conditioning (heating, cooling, and ventilating) accounts for about 7.0 quads of primary energy per year, or about 40% of total commercial energy use in the United States. Through the Space Conditioning Technology Research Team, partners work together to deploy energy-saving space-conditioning strategies by partnering with industry on the Advance Rooftop Unit Campaign, coordinating real-world building demonstrations, and generating tools to help partners understand and improve the performance of HVAC systems.
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Featured Solutions
This short guide helps building owners and managers plan for boiler replacement early, understand the options, and find the most effective solutions for their situation. It also includes case study examples and a collection of financial resources.
This resource provides information to aid conversations with facility managers and engineers and provides an explanation of how the hydrofluorocarbon (HFC) phasedown affects equipment in commercial buildings. It also includes actions organizations can take now to properly plan and prepare. Click here for the Spanish version.
This guide is intended for building owners and facility managers interested in electrifying commercial building water heating systems via new building systems or system retrofits. This guide is also a resource for contractors becoming familiar with commercial HPWHs. Click here for the Spanish version.
This guidance document from the National Renewable Energy Laboratory (NREL) can help small businesses to improve indoor air quality and reduce occupant risk. Click here for the Spanish version.
This fact sheet provides relevant information to help building owners manage proper disposal of HVAC systems, how to navigate regulations, and how to recover economic value from old systems.
Other Resources
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RTU Inventory Spreadsheet
The rooftop unit inventory spreadsheet can be used to gather basic RTU information in a streamlined evaluation process.RTU Field Evaluation Checklist
The RTU Field Evaluation Checklist is a visual-based field evaluation to help identify damage, dysfunction, or degradation that requires more than routine maintenance.Advanced Energy Retrofit Guides
The Advanced Energy Retrofit Guides (AERGs) provide practical roadmaps and example efficiency measures for effectively planning and implementing performance improvements in existing buildings. The AERG series covers K-12 schools, retail buildings, grocery stores, office buildings, and healthcare facilities.Buildings Re-tuning Training
Re-tuning is a low-cost process to identify and correct building operational problems that lead to energy waste. The Department of Energy and the Pacific Northwest National Laboratory developed training curricula focused on re-tuning large and small commercial buildings.ENERGY STAR® Building Upgrade Manual
This manual contains energy-saving building upgrades and cost-effective retrofit opportunities. See Chapter 5 for retro-commissioning, Chapter 8 for air-distribution systems, and Chapter 9 for heating and cooling upgrades.Federal Energy Management Program (FEMP) purchasing requirements
A FEMP resource on procuring high-efficiency products, many not covered by ENERGY STAR®. Although developed for a federal audience, they can apply to the private sector.HVAC Equipment Replacement: Integrated Systems Package
Lawrence Berkeley National Lab created an integrated systems package (ISP) for achieving deeper energy savings during RTU equipment replacement in existing commercial buildings. To minimize required expertise and effort, the ISP includes a checklist, specifications, and procedures for a high-efficiency RTU, advanced controls, energy monitoring, and envelope improvements to reduce HVAC sizing.
Contacts
Marcus Bianchi is a senior research engineer with the Building Energy Science Group. He is a thermal energy expert and conducts research in modeling, analysis, and testing of advanced building envelope components and systems to improve the energy performance of buildings. Marcus returned to NREL in 2019 after eight years at Owens Corning, where he led the Building Science team. He is active at ASHRAE, where he was chair of Technical Committee 4.4—Building Materials and Building Envelope Performance. He holds a Ph.D. in mechanical engineering from Purdue University and is a licensed professional engineer in Colorado.