2.0404.1 Stand-Alone Dehumidifiers | Standard Work Specifications for Home Energy Upgrades

2.0404.1 Stand-Alone Dehumidifiers

Topic:

Moisture

Subtopic:

Space Conditioning

Desired Outcome:

Energy used to control humidity in conditioned spaces reduced

For supporting material, see Referenced Standards and Calculation of the Infiltration Credit.

Single-Family Homes Manufactured Housing

Title	Specification(s)	Objective(s)
2.0404.1a Selection	Equipment will have a minimum efficiency level of ENERGY STAR® or better Equipment will have a fan-off option Equipment will retain settings after power-off Equipment will have features that reduce both peak electric use (e.g., internal and external timers) and absolute energy use Equipment will have standby losses of 1 watt or less Controls will be labeled so they are understandable, readable, and accurate for occupant needs Systems located in a basement or crawl space will be rated for cold temperature operation Operating environment will be determined and appropriate equipment will be selected for that environment (e.g., low temperature and high relative humidity)	Reduce energy use Provide durable equipment Control moisture Provide equipment appropriate for occupant use
2.0404.1b Installation	Installation will proceed only when the following applicable steps have been taken to control moisture: Downspouts are re-directed away from foundation Moisture from drying clothes is vented to the outside Sump pit is covered and sealed Dirt in crawl space is covered with a vapor barrier Vapor barrier A material that retards the passage of water vapor and contains a perm rating of less than 1 Plumbing leaks are eliminated Equipment will be installed according to manufacturer specifications and meet all applicable codes Equipment will be installed to permit adequate air flow Equipment will have a timer for off-peak operation if time-of-use program is available and if the equipment can handle power interruptions Any penetrations to the exterior of the home created by the installation of the appliance will be sealed Initial relative humidity and temperature settings will be set by the installer to ensure the space does not reach dew point Operation of controls and needed maintenance will be reviewed with occupant A user guide for dehumidifier settings in different climate conditions will be created by the installer and provided to the occupant Installer will commission the equipment to ensure it is functioning properly An independent measurement will be made to verify relative humidity System will be connected directly to condensate line that drains to a plumbing drain or the exterior, away from the home's foundation and in compliance with the plumbing code or the authority having jurisdiction Specific information on the proper maintenance of the equipment will be provided to the occupant Warranty information, operation manuals, and installer contact information will be provided to the occupant	Reduce or retire dehumidifiers Reduce allergens and asthma triggers Improve health and reduce irritants Improve building durability Improve comfort Reduce pest populations Reduce risk of mold issues Educate occupant on how to operate and maintain equipment
2.0404.1c Decommissioning	Removed equipment will be recycled or disposed of properly in accordance with local regulations	Prevent the reuse of inefficient equipment and its components Reduce waste Protect the environment

Title

Specification(s)

Objective(s)

2.0404.1a
Selection

Equipment will have a minimum efficiency level of ENERGY STAR® or better

Equipment will have a fan-off option

Equipment will retain settings after power-off

Equipment will have features that reduce both peak electric use (e.g., internal and external timers) and absolute energy use

Equipment will have standby losses of 1 watt or less

Controls will be labeled so they are understandable, readable, and accurate for occupant needs

Systems located in a basement or crawl space will be rated for cold temperature operation

Operating environment will be determined and appropriate equipment will be selected for that environment (e.g., low temperature and high relative humidity)

Reduce energy use

Provide durable equipment

Control moisture

Provide equipment appropriate for occupant use

2.0404.1b
Installation

Installation will proceed only when the following applicable steps have been taken to control moisture:

Downspouts are re-directed away from foundation
Moisture from drying clothes is vented to the outside
Sump pit is covered and sealed
Dirt in crawl space is covered with a vapor barrier Vapor barrier A material that retards the passage of water vapor and contains a perm rating of less than 1
Plumbing leaks are eliminated

Equipment will be installed according to manufacturer specifications and meet all applicable codes

Equipment will be installed to permit adequate air flow

Equipment will have a timer for off-peak operation if time-of-use program is available and if the equipment can handle power interruptions

Any penetrations to the exterior of the home created by the installation of the appliance will be sealed

Initial relative humidity and temperature settings will be set by the installer to ensure the space does not reach dew point

Operation of controls and needed maintenance will be reviewed with occupant

A user guide for dehumidifier settings in different climate conditions will be created by the installer and provided to the occupant

Installer will commission the equipment to ensure it is functioning properly

An independent measurement will be made to verify relative humidity

System will be connected directly to condensate line that drains to a plumbing drain or the exterior, away from the home's foundation and in compliance with the plumbing code or the authority having jurisdiction

Specific information on the proper maintenance of the equipment will be provided to the occupant

Warranty information, operation manuals, and installer contact information will be provided to the occupant

Reduce or retire dehumidifiers

Reduce allergens and asthma triggers

Improve health and reduce irritants

Improve building durability

Improve comfort

Reduce pest populations

Reduce risk of mold issues

Educate occupant on how to operate and maintain equipment

2.0404.1c
Decommissioning

Removed equipment will be recycled or disposed of properly in accordance with local regulations

Prevent the reuse of inefficient equipment and its components

Reduce waste

Protect the environment

Title	Specification(s)	Objective(s)
2.0404.1a Selection	Equipment will have a minimum efficiency level of ENERGY STAR® or better Equipment will have a fan-off option Equipment will retain settings after power-off Equipment will have features that reduce both peak electric use (e.g., internal and external timers) and absolute energy use Equipment will have standby losses of 1 watt or less Controls will be labeled so they are understandable, readable, and accurate for occupant needs Systems located in a basement or crawl space will be rated for cold temperature operation Operating environment will be determined and appropriate equipment will be selected for that environment (e.g., low temperature and high relative humidity)	Reduce energy use Provide durable equipment Control moisture Provide equipment appropriate for occupant use
2.0404.1b Installation	Installation will proceed only when the following applicable steps have been taken to control moisture: Downspouts are redirected away from foundation Moisture from drying clothes is vented to the outside Sump pit is covered and sealed Dirt in crawl space is covered with a vapor barrier Vapor barrier A material that retards the passage of water vapor and contains a perm rating of less than 1 Plumbing leaks are eliminated Equipment will be installed according to manufacturer specifications and meet all applicable codes Equipment will be installed to permit adequate air flow Equipment will have a timer for off-peak operation if time-of-use program is available and if the equipment can handle power interruptions Any penetrations to the exterior of the home created by the installation of the appliance will be sealed Initial relative humidity and temperature settings will be set by the installer to ensure the space does not reach dew point Operation of controls and needed maintenance will be reviewed with occupant A user guide for dehumidifier settings in different climate conditions will be created by the installer and provided to the occupant Installer will commission the equipment to ensure it is functioning properly An independent measurement will be made to verify relative humidity System will be connected directly to condensate line that drains to a plumbing drain or the exterior, away from the home's foundation and in compliance with the plumbing code or the authority having jurisdiction Specific information on the proper maintenance of the equipment will be provided to the occupant Warranty information, operation manuals, and installer contact information will be provided to the occupant	Reduce or retire dehumidifiers Reduce allergens and asthma triggers Improve health and reduce irritants Improve building durability Improve comfort Reduce pest populations Reduce risk of mold issues Educate occupant on how to operate and maintain equipment
2.0404.1c Decommissioning	Removed equipment will be recycled or disposed of properly in accordance with local regulations	Prevent the reuse of inefficient equipment and its components Reduce waste Protect the environment