Library

2009 edition of code establishing a baseline for the design and installation of fuel gas systems and gas fired appliances through performance requirements.

Performance rating standards for unitary air-conditioners and unitary air-source heat pumps, including definitions, classifications, testing, rating, and operating requirements, as well as minimum data requirements for published ratings and markings.

Report providing builders in marine climates with guidance for building homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

Report describing measures that builders in mixed-humid climates can use to build homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

Web page describing essential guidelines and recommendations for optimal installation of ductless heat pumps in cold climates, ensuring maximum heating performance and long-term satisfaction for homeowners, supported by research-backed insights and detailed resources.

Report discussing opportunities and trends in the U.S. home performance contracting industry, along with market drivers such as consumer demand; federal, state, and local programs; and utility and non-governmental programs.

Research study estimating potential energy savings relative to conventional ducted air distribution, and identifying equipment requirements, costs, and barriers.

This is a federal tax credit for complying air source heat pumpe. Units located in the "North" must meet ENERGY STAR's cold climate heat pump criteria.

Document providing step-by-step guidance to sizing air-source heat pumps for a cold climate.

Webpage describing the functionality and benefits of switching to Air Source Heat Pumps, as well as linking to sets of products, rebates, most efficient ASHPs, and providing consumer aid for purchasing an ASHP.

Report about two test home evaluations that provided valuable data about the true in-field performance of various building mechanical systems and LAMELs.

Technical report describing how the FSEC Energy Research Center explores low-cost space-conditioning upgrades for existing homes by integrating centrally located, high-efficiency ductless mini split heat pumps with older but functional central space conditioning systems, aiming to achieve energy...

ASHRAE Standard prescribing an field evaluation and test method to measure and score the performance of unitary HVAC systems.

Standard providing a methodology for evaluating the installation quality of unitary HVAC systems.

Report about a building project in the marine climate.

Webpage describing how to improve a variable capacity heat pump's efficiency by not programming a deep setback on the thermostat.

DOE report characterizing market and technical barriers impeding broader utilization of fault detection technology for residential HVAC energy efficiency applications.

Report summarizing commissioning, short-term testing, utility bill data analysis, and results of on-site monitoring of a deep energy retrofit.

Report describing the best practices for the safe, efficient, and compliant installation of residential air source heat pump water heaters (HPWH) in California, aligning with the state's climate goals and providing guidance for educators, installers, and industry stakeholders.

Information sheet offering general recommendations on supplemental humidity control and outlines viable system configurations.

Document providing guidance to U.S. home builders who want to accept the challenge.

Guide describing measures that builders in the cold and very cold climates can take to build homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

Report summarizing the guidelines for developing and reporting analytical results in a consistent and meaningful manner for all home energy uses.

Document illustrating some analysis concepts that are proven to be effective and reliable in analyzing the transient energy usage of advanced energy systems as well as of entire houses.

Website providing CAD files and drawings of advanced framing details.

Document with the Quality Control Checklist developed as both a guide to assist in the transition to high performance home building, and as a simplified tool to be used as part of any builder's on-site quality control procedures.

Training module describing the operation, efficiency, consumer and seller benefits, and cost comparison of Heat Pump Water Heaters (HPWH) against conventional gas, oil, or electric water heaters.

Report describing a deep energy retrofit project for a two-family wood framed home located in Belmont, Massachusetts.

Book describing Carpentry and Construction, Construction Materials, Hand Tools, Power Tools, Construction Equipment, Jobsite Safety, and Working Conditions, Building Design and Print reading, Inspections Survey Instruments and Operations, Foundation and Outdoor Slab Construction, Floor, Wall, and...

AHRI-hosted directory of residential products meeting CEE's highest tier

Design guide providing solutions and tools for designing central heat pump water heater systems in multifamily and other commercial buildings.

Report summarizing the key opportunities, gaps, and barriers identified by the national laboratory white papers discussing long-term 50% energy reduction goals.

Specification defining performance and reporting requirements to meet the voluntary “Cold Climate Air Source Heat Pump Specification” (ccASHP Specification) for air source heat pumps suited to heat efficiently in cold climates (IECC cz 4 and higher).

Webpage outlining how to optimize the installations and performance of mini-split heat pump systems. As well, it discusses a set of design considerations for multi-level homes, low load homes, and heat distribution to rooms without a heat source.

The Cold Climate Heat Pump Decision Tool guides contractors and installers through the decision-making process for heat pump (HP) sizing, identifying personalized CCHP recommendations, and applicable tax credits, with a focus on retrofits in cold climates.

List of commercial heat pump water heater systems that comply with NEEA's Advanced Water Heating Specification.

List of multifamily commercial heat pump water heater products that meet the NEEA Advanced Water Heating Specification Requirements.

Research study comparing various retrofit models in Wisconsin to evaluate performance in terms of savings per home and program cost per home to assess the relative cost effectiveness of each program design.

Two hourly energy simulation software, BEopt and Energy Gauge USA, were compared to ensure accuracy and evaluate agreement on the impact of various energy efficiency improvements.

Webpage with instructions for heat pump installers to choose the most suitable type of heat pump system, according to a project’s specific requirements.

Document for contractors detailing how to prioritize, control, and configure heat pumps in a residence that uses two heating systems.

Document for customers describing the benefits of two-system controls for homes, including information answering how, when, why, and how two-system controls with multiple heating sources are employed.

Website providing building science based guidance and training for residential construction.

Report on experiments comparing the cooling and heating seasonal and peak demand performance of different variable-capacity air conditioning and heat pump units.

Guidance document on deep energy retrofits.

Part of a larger LBNL report (Deep Energy Retrofit Guidance for the Building America Solutions Center), the Design and Construction Process chapter provides detailed guidance for each process phase: pre-planning, planning, construction, test-out and post-occupancy.

Part of a larger LBNL report (Deep Energy Retrofit Guidance for the Building America Solutions Center), the Lessons Learned chapter focuses on successful deep energy retrofit projects throughout the U.S.

Report describing the progress toward and issues related to developing a usable, standardized, empirical data-based software accuracy test suite.

Online database with efficiency information about residential HVAC systems and commercial refrigeration equipment.

Website for finding policies and incentives by state for renewables and efficiency.