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Humidity Control: Supplemental Dehumidification in Hot-Humid Climates

Reference

Fact Sheet describing the need for supplemental dehumidification, dehumidifier configuration options, and design considerations.

Right - A stand-alone dehumidifier is located in the return air closet of this multifamily dwelling located in a humid climate

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An independent ducted dehumidifier draws air from and supplies air to the living space using its own ducts, not ducts that are connected to the HVAC system

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The dehumidifier draws air from a common area in the house, dehumidifies it, and adds it to the supply side of the central air handler for mixing and distribution

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The dehumidifier draws air from a common area in the house, dehumidifies it, and adds it to the return side of the air handler for conditioning, mixing, and distribution

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Humidity and Variable Refrigerant Flow Operation in Multifamily Buildings

Reference

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.

Effect of Occupant Behavior and Air Conditioner Controls on Humidity in Typical and Low-Load Homes

Presentation

Webinar describing the effect of occupant behavior and air conditioner controls on humidity in typical and low-load homes.

Whole-House Dehumidification

Guide

Guide describing options for adding dehumidification equipment to a home to maintain indoor relative humidity below 60%.

The dehumidifier draws air from both a common area in the house and from outside, dehumidifies it, and adds it to the supply side of the air handler for distribution

Image

Humidity Control: Supplemental Dehumidification in Hot-Humid Climates

Right - A stand-alone dehumidifier is located in the return air closet of this multifamily dwelling located in a humid climate

An independent ducted dehumidifier draws air from and supplies air to the living space using its own ducts, not ducts that are connected to the HVAC system

The dehumidifier draws air from a common area in the house, dehumidifies it, and adds it to the supply side of the central air handler for mixing and distribution

The dehumidifier draws air from a common area in the house, dehumidifies it, and adds it to the return side of the air handler for conditioning, mixing, and distribution

Humidity and Variable Refrigerant Flow Operation in Multifamily Buildings

Effect of Occupant Behavior and Air Conditioner Controls on Humidity in Typical and Low-Load Homes

Whole-House Dehumidification

The dehumidifier draws air from both a common area in the house and from outside, dehumidifies it, and adds it to the supply side of the air handler for distribution

2015 International Mechanical Code - IMC

Variable Refrigerant Flow Performance: Humidity and Efficiency in Multifamily Buildings in New York, NY

Whole-House Ventilation Strategies for New Homes

Pre-Retrofit Assessment of Ventilation Systems