Library

2012 edition of code establishing a baseline for the design and installation of fuel gas systems and gas fired appliances through performance requirements.

2015 edition of code establishing minimum regulations for mechanical systems, including heating, cooling, ventilation, exhaust, ducts, fireplaces, combustion and hydronic systems, using prescriptive and performance-related provisions.

The manual covers residential zoning issues - multiple, single-zone, and central multi-zone systems - and includes advice on working with homeowners to adapt the heating or cooling system design to meet modern home design features.

Report describing two retrofit duct sealing techniques - manually-applied sealants and injecting a spray sealant, that were implemented in several low-rise multi-unit buildings in North Carolina.

Report analyzing design heating load sizing methods for superinsulated homes in cold climates and comparing them to the actual energy usage to determine if the building load calculation methodology should be changed for calculating the design heating load of these homes.

This directory contains the I=B=R Ratings for cast-iron, steel, aluminum and copper boilers, baseboard and finned tube radiation, indirect-fired water heaters, effective as of the date of this publication.

Web report explaining how correct filter sizing is an issue that applies to all new and existing homes that use ducted HVAC systems.

Report describing strategies to improve the aging steam heating systems in New York City to improve energy efficiency, reduce oil and gas usage, and cut maintenance costs.

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

Part of a larger LBNL report (Deep Energy Retrofit Guidance for the Building America Solutions Center), the Source Energy and Carbon Decisions chapter helps users carefully assess the impacts of switching from gas to electricity for heating end-uses, using source energy and/or carbon emissions...

Report outlining the issues with using existing ducts with a new low-load HVAC system, which reduces throw at supply registers causing decreased mixing of supply and room air, leading to potential thermal comfort complaints.

Report identifying two barriers that limit the ability of builders to explore opportunities for higher levels of energy efficiency in housing: the use of duct system materials that inherently achieve airtightness and are right-sized for low-load houses, and, the ability to air seal fire separation...

Research study describing experiments run in an unoccupied 1600 square foot house to evaluate the delivered performance as well as the relative performance of a SEER 21 variable capacity heat pump versus a SEER 13 heat pump.

Report detailing the effects of replacing PSC motors with more efficient, variable-speed motors.

Technical report describing the evaluation of four different ventilation strategies for providing make-up air in high-performance, new construction multifamily buildings in the Northeast, emphasizing the challenges posed by increasing airtightness standards and the variability of system performance...

Report describing research that helps inform best practices for air-sealing multifamily buildings in the Northeast.

Article describing RESNET guidance on evaporative coolers.

The New York State Energy Research and Development Authority (NYSERDA) is interested in finding cost-effective solutions for deep energy retrofits (DERs) related to exterior wall insulation in a cold climate, with targets of 50% peak load reduction and 50% space conditioning energy savings.

Report of a field evaluation of four novel roof designs to see how each design would reduce space-conditioned energy use so that the knowledge gained could be applied to the design of new manufactured homes.

Standards criteria supporting ICC HVAC duct support standards.

Report summarizing the status of a central hydronic heating system project in multifamily housing at the conclusion of the 20112012 heating season.

The study described in this white paper is based on building energy modeling with an important focus on the indoor humidity impacts of ventilation.

Report examining the impacts that common installation practices and age- induced equipment degradation may have on the installed performance of natural gas furnaces, as measured by steady-state efficiency and AFUE.

Report describing as-found interior platform return plenums, the magnitude of their contribution to the total amount of duct leakage, and techniques and results of retrofits executed by the HVAC trade during equipment replacement.

Report describing the results of a 21-home field study investigating the effectiveness and failure rates of whole-house mechanical ventilation systems installed in Florida homes over the last 15 years.

Report on the long-term performance of mini-split heat pumps.

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.

This document addresses adding—or improving—mechanical ventilation systems to existing homes. The purpose of ventilation is to remove contaminants from homes either directly or by dilution. This report discusses where, when, and how much ventilation is appropriate in a home, including some...

Standard that prescribes a testing method to determine the efficiency of space heating and/or cooling thermal distribution systems under seasonal and design conditions. This version of the standard was published in the year 2014, and is available for preview and purchase at the reference link. The...

This report is designed to meet ASHRAE 62.2-2010/2013 and ANSI/ACCA’s 5 QI-2015 protocol, thereby improving the performance of HVAC equipment in new homes when compared to homes built to minimum code.

Information sheet providing guidance about the placement of ventilation approaches.

Research project aimed to verify whether homes in the New Jersey HPwES program achieved 30% source energy savings, and if so, what measures were implemented to achieve them.

Report proposes high performance duct measures for inclusion in California Title 24 building energy efficiency standards for 2016.

Report evaluating mechanical AC precooling strategies in homes as a method for improving the load factor by shifting cooling operation from on-peak to off-peak hours.

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.

Technical study exploring the impact of different installation faults on heat pump performance in a single-family house.

Study conducted to help determine cost-effective solutions for heating and cooling houses that are designed to be energy efficient.

Proposed HVAC filter labeling standard and underlying analysis by the California Energy Commission.

This guide and workbook offers practitioners with the knowledge to properly implement the measurement and documentation procedures required in the ANSI/ACCA 5.

Report on a project conducted to better understand the current usage of thermostatic radiator valves by key market players in steam and hot water heating and to conduct limited experiments on the effectiveness of new and old thermostatic radiator valves as a means of controlling space temperatures...