Library

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

Fact sheet describing a report providing best practices for reducing damages from floods to manufactured homes.

Fact sheet providing an overview of the FEMA document Wind Retrofit Guide for Residential Buildings.

Guide providing engineering seismic design and building practices based on post-earthquake research.

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.

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.

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

Article describing how an airtight home shell helps achieve a tight envelope that is energy efficient and cost effective.

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.

Report describing approaches to insulating basements in homes built to meet Energy Star levels of performance of heat loss reduction.

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

Article from California Earthquake Authority on the benefits of retrofitting homes to withstand earthquake forces, with a focus on foundations, walls, and chimneys.

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 about insulating slabs.

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

Article describing the control layers (air, thermal, and vapor barriers) needed to build homes successfully in very cold locations.

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 about the fundamental concepts that must be understood at the planning or initial nspection of existing homes regarding surface and ground water management.

Article describing correct ways to eliminate water damage by incorporating a sacrificial layer to foundation walls and footings.

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 aimed to quantify the impact of closed crawlspaces in new homes, and investigate modeling software to ensure accuracy of energy consumption predictions in these homes.

Guide about designing and installing closed crawlspaces in the Southeast.

Volume 1 of a two-volume report providing a comprehensive approach to planning, siting, and risk management for homes constructed in coastal environments.

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.

Website discussing building foundation problems caused by settling soil in Colorado.

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.

Information guide describing issues with concrete floors, in multiple climate zones.

Document discussing moisture considerations and testing techniques for concrete floors.

Report covering insulating crawlspaces.

Article describing the process of constructing concrete walls

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.

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

Report providing guidance on designing buildings to be flood resistant.

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

Webpage describing the successes and ongoing efforts of the Northwest Energy Efficiency Alliance's Go Ductless ductless heat pump program which successfully encouraged the installation of more than 150,000 minisplit heat pumps in the Northwest between 2010 and 2021.

Research report with results from field tests in two homes in Austin, Texas, from October 2011 to June 2012 to evaluate the comfort performance of ductless mini-split heat pumps