Library

Guidance on performance of current diagnostics as well as a draft test method for use in future air flow evaluations.

Report presenting lab evaluation of five heat pump water heaters available in the US market today.

Report proposing mini-split heat pumps as a new retrofit option to replace resistance heating in the Pacific Northwest.

PDF literature review of the impact and need for attic ventilation in Florida homes.

Report identifying the target market for solar water heaters and potential pathways and cost/performance targets that must be met for these systems to realize large energy savings.

Guideline describing the importance of the different types of multifamily building attics and their unique challenges, and outlines strategies and materials used in air-sealing them.

Project discussing buried or encapsulated ducts and their pros and cons.

Report describing the installation and operation of forced-air heating and domestic hot water combi systems in residential homes.

Document intended for designers and installers of hydronic heating systems interested in maximizing the overall system efficiency of condensing boilers when coupled with baseboard convectors. It is applicable to new and retrofit projects.

Report providing step-by-step instructions for heating contractors and hydronic designers for selecting the proper control settings to maximize system performance and improve response time when using a thermostat setback.

Guideline describing information and specifications relevant to air-seal existing attics.

Document with evaluation of 14 heat pump water heaters (including three recently released HPWH products) installed in existing homes in the northeast region of the United States.

Document covering installation of high efficiency gas furnaces, including when to install a high efficiency gas furnace as a retrofit measure, how to identify and address risks, and steps to follow for the selection and installation process.

Report describing the most cost-effective ventilation and indoor air quality solutions for multifamily homes that meet ASHRAE 62.2-2016.

Research study outlining results of monitoring a low temperature heat pump.

Report covering the selection of roof vents for rainwater resistance.

This report investigates whether mini-split heat pumps can live up to their potential for one market segment: multifamily retrofits.

Website describing Minnesota Power’s New Construction Energy Efficiency program that promotes building practices and technologies that enhance new residential construction.

FEMA report describing findings from an investigation of Hurricane Ike in Texas and Louisiana and residential construction recommendations based on those findings.

FEMA Mitigation Assessment Team Report describing damages from Hurricane Michael in Florida in Oct. 2018 and recommendations for future hurricane preparedness.

Report on the use of vapor diffusion ports to reduce moisture issues with buried ductwork in unvented attics in hot-humid climates.

Conference paper making the case that moving ducts to conditioned space saves energy, is practical for production builders (when accompanied by careful pre-planning), and creates significant andmarketable energy savings for homebuyers.

Database compiling extended capacity data for numerous cold climate heat pump manufacturers and models.

Report discussing the benefits of modern evaporative cooling systems for use in hot dry climate zones.

Guide providing information on controlling attic ductwork sweating.

Document on the development of two simple in-home efficiency test methods that can be used by technicians, researchers, or interested homeowners to verify the correct operation and energy efficiency of a homes air conditioning and heating equipment.

Report providing guidance on protecting foundation walls and enclosures from flood damage.

Report highlighting the evaluation methods used and extent of wind washing found in a study analyzing wind washing in thirty-two two-story homes.

Article investigating how a linear input/output relationship can be used as a simple model of the performance of a combination hydronic heating system over heating only, DHW only, and combined loads.

Article outlining moisture accumulation in open cell spray polyurethane foam.

Article describing how ice dams form on residential roofs, how they damage homes, and solutions to prevent future dams.

This page provides important information on how to protect yourself and your family if you suspect that you might have vermiculite insulation from Libby, Montana.

Website from the EPA containing information for homeowners and renters about how to identify asbestos in the home and how to deal with it to reduce exposure to it.

Website providing an online calculator for determining energy and cost savings from installing radiant barriers in attics.

Fact sheet describing analysis of potential heating and cooling savings from radiant barriers in attics.

U.S. Department of Energy's website describing radiant barriers in homes.

Website with answers to some of the most commonly asked questions about attic radiant barriers.

This study used an advanced airflow, energy and humidity modeling tool to evaluate the potential for residential mechanical pre-scooling strategies to reduce peak electriciy demand.

Article describing moisture and ice dam issues in attics and how to air seal the attic floor.

Fact sheet describing best practices in installing leak-free refrigerant systems, including specifics on creating flare joints and brazed joints, pressure testing, vacuum testing, and charging the system with refrigerant.

Technical report describing the research and development of the Ventilation-Integrated Comfort System (VICS) which is a specifically designed, energy-efficient solution that seamlessly integrates with low-capacity, ducted heating, and cooling systems, offering controllable, balanced energy recovery...

Report describing information from DOE about rules and standards for residential air conditioners and heat pumps.

Webpage describing a DOE Cold Climate Heat Pump Challenge. The challenge engages industry partners and focuses around the Cold Climate Heat Pumps, a more environmental and efficient heating alternative to traditional heating.

Paper covering a parametric study of foundation heat exchanger-based ground source heat pump systems for several house configurations in a range of European locations, with an emphasis on determining feasible combinations.

Report discussing instrumentation methods and field operation characteristics of two GSHPs in test houses, including a comparison between the manufacturers listed COP values and the COPs calculated from field data.

A quick-reference guide advising homeowners on how to elevate and protect outdoor HVAC equipment from high winds and floods.

Report describing the costs, benefits, and challenges of attic insulation retrofits in HUD-code manufactured homes.

Article describing how replacing permanent split capacitor (PSC) motors with electronically commutated motors (ECM) can boost bottom line for HVAC contractors as well as improve customer comfort and satisfaction.

Q&A article discussing how to address moisture issues in an attic in a wet and humid coastal climate.

Web page providing an overview of room-level air conditioning systems such as window units and mini-splits.