Library

Energy Star web page providing guidance on attic ventilation.

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.

The research report outlines a practical and cost-effective strategy utilizing central HVAC systems to optimize humidity control and ventilation in energy-efficient homes located in hot-humid climates, demonstrating significant improvements without requiring complex equipment upgrades.

Case study about high humidity, mold and condensation on surfaces in S. Florida, and how building characteristics cause and amplify these problems.

Technical article describing issues and moisture concerns related to weatherization efforts.

Article describing the building science implications of insulating vented or unvented attics.

Article describing the research into insulating vented versus unvented attics.

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

Reference investigating the strategy of using buried and/or encapsulated ducts to reduce duct thermal losses in residential buildings.

Report on heating and cooling air-distribution ducts that are insulated, installed close to the ceiling in a vented attic and covered with attic insulation to minimize energy loss.

Article describing the difference between conditioned or unvented attics and unconditioned or vented attics.

Webpage providing details of an experimental earth tube installation at the Clean Energy Exhibition in Georgia.

Report to understand the long-term moisture performance of unvented roof assemblies with fibrous insulation.

A guide for designers, architects, engineers, and fire experts on how to design rainscreen and ventilated cavities such that they don’t contribute to the spread of a fire.

Report providing the results of an analysis of humidity control and variable refrigerant flow (VRF) system efficiency in three new multifamily buildings in New York, NY.

Website providing an online directory of more than 3,600 residential ventilation products lisiting flowrates, sones, watts, and other performance metrics; all listed products have been tested by the Home Ventilating Institute.

Article describing methods for insulating and air sealing vented and unvented roofs in various climates zones.

Report providing extensive guidance on controlling moisture in building envelopes through proper selection and installation on air, water, thermal, and vapor barriers.

Research study identifying the best performing, most energy-efficient and cost- effective techniques to provide controlled mechanical ventilation and humidity control in hot- humid climates with thermally efficient building envelopes.

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

Fact sheet describing the results of an analysis of humidity control and variable refrigerant flow (VRF) system efficiency in three new multifamily buildings in New York, NY.

Building science report describing issues with vented attics in hot-humid climates and how sealed attic construction may be a solution.