ENERGY STAR Symbol

ENERGY STAR®
Qualifying Criteria for
Ventilating Fans (Residential)

Definitions

Residential Ventilating Fan: A ceiling or wall-mounted fan (with or without a light source) or remotely mounted in-line fan, designed to be used in a bathroom, utility room or a kitchen range hood, whose purpose is to move objectionable air from inside the building to the outdoors.

Specific products that can qualify under this specification:

  1. range hoods with ventilating fans
  2. range hoods with ventilating fans and a light source (range hoods that have incandescent light sources or sockets can qualify only until December 31, 2004)
  3. bathroom and utility room ventilating fans (ducted and direct-discharge)
  4. combination residential bathroom / utility room ventilating fans
  5. ventilating fans with sensors and timers
  6. ventilating in-line fans (single and multi-port)

Specific products that cannot qualify under this specification:

  1. residential bathroom and utility room ventilating fans that have lamp sockets that can accept incandescent lamps
  2. range hoods with incandescent light sources or sockets (after December 31, 2004)
  3. ventilating fans with heat lamps
  4. ventilating fans used for cooling (e.g. whole-house fans) and air circulation
  5. energy and heat recovery ventilator (HRV) fans
  6. powered attic ventilators
  7. passive or non-powered ventilation systems

Combination Unit: A residential ventilating fan that contains a light source for general lighting and/or a night light.

In-line Ventilating Fan: A fan designed to be located within the building structure that requires ductwork for both intake and exhaust. In-line fans with only one intake are defined as "single port"; those with multiple intake ports are defined as "multi-port" in-line fans.

HVI: Home Ventilating Institute

HVI 915, Procedure for Loudness Rating of Residential Fan Products: A procedure to test and rate ventilation fan products for sound. Includes laboratory requirements and methods for obtaining sound pressure, sound power and sone values.

HVI 916, HVI Airflow Test Standard: This standard establishes uniform methods for laboratory testing of the airflow rate of powered residential ventilating equipment. It covers the test equipment, tests for specificHVI classification groups and test reports, and sets out policies for maintaining the standard.

HVI 920, HVI Product Performance Certification Procedure, including Verification and Challenge: A publication that defines and specifies certain aspects of the procedures, covering such points as the actual testing, certification process, challenge procedures and use of theHVI trademark and labels.

ANSI/AMCA Standard 210-07 “Laboratory Methods of Testing Fans for Certified Aerodynamic Performance Rating”. This standard defines uniform methods for conducting laboratory tests on housed fans to determine airflow rate, pressure, power and efficiency, at a given speed of rotation.

ANSI/AMCA Standard 300-08, “Reverberant Room Method for Sound Testing of Fans”: This ANSI/AMCA standard applies to fans of all types and sizes. It is limited to the determination of airborne sound emission for the specified setups.

AMCA Publication 311-05, “Certified Ratings Program – Product Rating Manual for Fan Sound Performance”. Publication that prescribes and establishes specifications to be used in connection with the AMCA Certified Ratings Program for the sound performance of fans. This document covers the actual testing, the certification process, the challenge procedures and the use of the AMCA Certified Ratings seal. 

Inch of Water Gauge (w.g.): A unit of pressure used to describe both water and gas pressures. The conventional equivalent for one inch of water is 249.0889 Pascals, which is 2.490889 millibars, about 0.036127 pounds per square inch (psi) or about 0.073556 inches (1.86832 millimetres) of mercury. The word "gauge" after a pressure reading indicates that the pressure stated is actually the difference between the absolute, or total, pressure and the ambient air pressure at the time of the reading.

Light Source: The lighting portion of a combination unit or range hood. For units using a compact fluorescent light (CFL) or fluorescent lamp, the light source includes the lamp and the ballast.

Power Consumption: The operation of the fan motor consumes electrical power measured in watts (W). The power used for lights, sensors, heaters, timers or night lights is not included in the determination of power consumption.

Sone: An internationally recognized unit of loudness, which simplifies reporting of sound output by translating laboratory logarithmic decibel readings into a linear scale that corresponds to the way people sense loudness. A sone is equal in loudness to a pure tone of 1000 cycles per second at 40 decibels (dBA) above the listener's threshold of hearing.

Working Speed: The lowest speed above 100 cubic feet per minute (cfm) (2.8 m3/min) for a two-speed fan and a low setting above 90 cfm (2.5 m3/min) for a multi-speed fan, as defined in the HVI Supplement, Range Hood Working Speed.

Technical Criteria

Lighting Requirements: Residential bathroom and utility room fans and range hoods that include a light source must meet the lighting performance criteria listed in Table 2 or Table 3, depending on the type of light source. Ventilating fans that have lamp sockets that can accept incandescent lamps are excluded.

Table 1. Criteria for ENERGY STAR Qualified Residential Ventilating Fans
Product Airflow Rating[cfm (m3/min)] Minimum Efficacy Level[cfm/W (m3/min/W)] Maximum Allowable Sound Level*[sones]
Range Hood Up to 500 cfm(Up to 14.2 m3/min) 2.8 (0.08) 2.0
Bathroom and Utility Fan 10 to 80 cfm(0.3 to 2.3 m3/min) 1.4 (0.04) 2.0
Bathroom and Utility Fan 90 to 500 cfm(2.5 to 14.2 m3/min) 2.8 (0.08) 2.0
In-line (single and multi-port) Ventilating Fan Any 2.8 (0.08) Not Applicable

*Based on static pressure reference measurement as given in the "Product Testing" section of this specification.

Table 2. Criteria for Fluorescent Lighting in ENERGY STAR Qualified Residential Ventilating Fans
Performance Characteristic ENERGY STAR Specification
System Efficacy per Lamp Ballast Combination [in lumens per watt (LPW) - see notes at end of this table]

>= 46 LPW for all lamp types below 30 total listed lamp watts.

>= 60 LPW for all lamp types that are <= 24 inches and >= 30 listed lamp watts.

>= 70 LPW for all lamp types that are <= 24 inches and >= 30 listed lamp watts.

Lamp Start Time

The time needed after the switch is turned on for the lamp to start continuously and remain lit must be an average of one second or less.

Manufacturers using magnetic ballasts and lamps with integrated electronic starting chips must include the lamps with the residential ventilating fan when it is shipped from the factory.

Lamp Life

For residential ventilating fans that are shipped with a lamp, the average rated life of the lamp must be >=10 000 hours.

For residential ventilating fans that are shipped without lamps, a list of lamp types must be provided that would allow the lighting source to comply with this specification requirement. This list must be clearly visible to the consumer on the packaging of the residential ventilating fan. Manufacturers are not required to provide specific lamp manufacturer names and model numbers on the packaging. Rather, generic lamp listings such as the National Electrical Manufacturers Association (NEMA) or the American National Standards Institute (ANSI) generic descriptions will suffice.

Colour Rendering Index >= 80 for CFLs
>= 75 for linear fluorescent lamps
Correlated Colour Temperature (CCT)

For residential ventilating fans that are shipped with a lamp and do not have a rated colour temperature of 2700 Kelvin (K) or 3000 K (actual measured CCT of 2700 to 3000K + or - 200K), the packaging should clearly describe the colour of the product (cool or warm) and state its intended use.

For residential ventilating fans that are shipped without a lamp, a list of lamp types must be provided that would allow the light source to comply with this specification requirement. This list must be clearly visible to the consumer on the packaging of the residential ventilating fan. Manufacturers are not required to provide specific lamp manufacturer names and model numbers on the packaging. Rather, generic lamp listings such as the NEMA or ANSI generic descriptions will suffice.

Noise Class A sound rating for electromagnetic and electronic ballasts, outside the fixture. Not to exceed a measured level of 24 dBA when measured in a room with ambient noise no greater than 20 dBA.
Maximum Total Lamp Wattage (excluding night lights) <= 50 W
Maximum Night Light Wattage <= 4 W

Notes on Lighting Criteria:

  • Light Source Efficacy shall be determined by the following equation:

    Light Source Efficacy
    [lumens per watt]
    =
    Measured Lamp Lumens [lumens]
    ÷
    Measured Input Power [watts]
     
  • Lamp Lumens: These must be measured with the lamp and ballast that are shipped with the residential ventilating fan.

  • Light Source Input Power: This must be measured with the lamp and ballast that are shipped with the residential ventilating fan.

  • For residential ventilating fans shipped without lamps, efficacy shall be determined by testing at least one of the lamp types listed on the product packaging.

  • In some cases, original equipment manufacturers (OEMs) may already offer lamps and ballasts that meet the above criteria. Manufacturers may choose a lamp-ballast combination from the NEMA/American Lighting Association (ALA) matrices or data from an ENERGY STAR Platform Letter of Qualification supplied by the OEMs.
Table 3
Light Source Criteria for LED Light Engines

Note: These requirements apply only to light sources using LED light engines.

Performance Characteristic

ENERGY STAR Requirements

Methods of Measurement Reference Standards

LED Light Engine Efficacy
Per LED light engine in lumens per watt (LPW)

≥ 50 LPW for uncovered LED light engines
≥ 40 LPW for covered LED light engines (engines featuring integral secondary optics)

ASSIST Recommends: Recommendations for Testing and Evaluating White LED Light Engines and Integrated LED Lamps Used in Decorative Lighting Luminaires. Vol 4, Issue 1, May 2008.(ASSIST, May 2008)1, 2

LED Light Engine Color Rendering Index (CRI)

≥ 75

ASSIST, May 2008; ANSI C78.377-2008

LED Light Engine Correlated Color Temperature (CCT)

Light output must meet one of the following nominal correlated color temperature (CCT) values: 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5700K, 6500K.

ASSIST, May 2008; ANSI C78.377-2008

LED Light Engine Maximum Measured Driver/Driver Case Temperature (During “in situ” Operation)

Tc not to exceed the LED driver manufacturer maximum recommended case temperature when measured during in situoperation.

ASSIST, May 2008

Lumen Maintenance

≥ 25,000 hours to 70% Lumen Maintenance (L70)

ASSIST Recommends: LED Life for General Lighting Vol. 1, February 2005, rev. August 2007 (ASSIST, rev. August 2007) 3, 4

Color Stability

Chromaticity shift for LED packages over time shall not exceed 0.007 on the CIE 1976 (u', v') diagram (corresponds with a 7-step MacAdam ellipse).

Power Factor

≥ 0.7

ANSI C82.77

1 ASSIST, May 2008: Available at http://www.lrc.rpi.edu/programs/solidstate/assist/pdf/AR-LEDLightEngine-May2008.pdf.
2 Note: EPA understands that IESNA LM-79 (“IESNA Approved Method for the Electrical and Photometric Measurements of Solid-State Lighting Products”) may in the future incorporate LED light engine test procedures; as such, EPA may reference LM-79 in future revisions of this specification.
3 ASSIST, rev. August 2007: Available at http://www.lrc.rpi.edu/programs/solidstate/assist/pdf/ASSIST-LEDLife-revised2007.pdf.
4 Note: EPA understands IESNA LM-80 (“IESNA Approved Method For Measuring Lumen Maintenance of LED Light Sources”) to be under development as of June 2008, and may reference LM-80 in future revisions of this specification.

Output Operating Frequency

≥ 120 Hz
Note: This performance characteristic addresses problems with visible flicker due to low frequency operation and applies to steady-state as well as dimmed operation. Dimming operation shall meet the requirement at all light output levels.

Oscilloscope instruction manual

 

Noise

Class A sound rating for power supplies for the light source, not to exceed a measured level of 24 dBA (audible) when the power supplies are installed in the product.

Class A sound rating for power supplies for the light source, not to exceed a measured level of 24 dBA (audible) when the power supplies are installed in the product and are measured using a sound meter (similar in performance to B&K type2209) where the microphone is located 12inches from the product in any direction.

 

Transient Protection

Power supply shall comply with ANSI/IEEE C62.41, Class A operation. The line transient shall consist of seven strikes of a 100 kHz ring wave, 2.5 kV level, for both common mode and differential mode.

ANSI/IEEE C62.41

 

Electromagnetic and Radio Frequency Interference

Power supplies must meet FCC requirements for consumer use (FCC 47 CFR Part 15/18 Consumer Emission Limits)

Consumer Limits per FCC 47 CFR Part 15/18

 

Maximum Total Lamp Wattage (excluding night lights)

50 Watts.

 

 

Maximum Night Light Wattage

4 Watts.

 

 

Warranty

A written warranty must be included with packaging at the time of shipment, covering repair or replacement of replaceable defective electrical parts for a minimum of three years from the date of purchase.

No Standard Available
(Use manufacturer protocol)

 

Product Packaging for Consumer Awareness

CCT Labeling:
Product packaging language is required that clearly describes the nominal color designation of the LED light engine in units of Kelvin.

No Standard Available
(Use manufacturer protocol)

 

Controls Compatibility:
External packaging must state any known incompatibilities with dimmers, occupancy or vacancy sensors, timing devices or any other external lighting controls.
 
Incandescent Equivalency:
Light sources incorporating LED light engines generating < 800 lumens must clearly state on product packaging the incandescent light output equivalency of the LED light engine based on the table below:

Note: EPA seeks to ensure that light sources for qualified ventilating fans meet consumer expectations for light output. This consumer awareness requirement is intended to help consumers understand the limitations of LED light engines producing less than 800 lumens (equivalent to 60 watts incandescent).

 

Luminous Flux (Lumens)

Incandescent Equivalency (W)

 

≥ 40

6

 

≥ 70

10

 

≥ 250

25

 

≥ 450

40

 

Example packaging declaration: “This light source produces light equivalent to a 25 watt incandescent bulb.”

 

 

  • Efficacy
  • Color Rendering Index (CRI)
  • Correlated Color Temperature (CCT)

Provide:
A test report from a laboratory:

  • trained by a representative of the Lighting Research Center (RPI) on behalf of the Alliance for Solid-State Illumination Systems and Technologies (ASSIST); or
  • qualified to participate in the Department of Energy’s CALiPER program.

Note: Upon availability of NVLAP accreditation for LED test methods, EPA will investigate test procedures under the proposed NVLAP scope and evaluate for inclusion here as an additional test report option.

Sample Size:

  • 1 complete light source sample (light engine installed); and
  • 2 additional light engine samples external to the light source; and
  • Any components and/or materials required to install additional LED light engines in light source.

 

  • Lumen Maintenance
  • Color Stability

 

Provide:

  • Lumen maintenance and color stability data declared by LED package manufacturer, in accordance with ASSIST Sample Data Sheet for High-Power LEDs (Issue 4); or
  • LED package datasheets conforming to IESNA LM-80 protocols, once the metric is available.

 

  • Maximum Measured Driver/Driver Case temperature
  • Power factor
  • Transient protection

 

Provide:

  • Laboratory test report.

Sample Size:

  • One light engine sample must be tested.

Warranty

Provide:
A copy of the actual light source manufacturer written warranty that is included with product packaging.

Product Packaging for Consumer Awareness

Provide:
A written copy or a PDF graphic of the language that will be displayed on product packaging and within the packaging as required.

 

Warranty

Participants must provide a minimum one-year warranty for a product to qualify for ENERGY STAR.

Installed Fan Performance

All qualifying ventilating fan models, with the exception of in-line and range hood models, when measured by industry standard testing procedures at 0.25 in. w.g. static pressure, must deliver a rated airflow equal to or greater than the following percentages of rated airflow, delivered at 0.1 in. w.g. static pressure for the particular model:

Product and Airflow Rated Airflow
(at 0.25 in. w.g.)
Bathroom and Utility Room Fans – 10 to 80 cfm 60%
Bathroom and Utility Room Fans – 90 to 500 cfm 70%

Installation Instructions And Recommendations

Picture diagram-type installation instructions must be included with each qualified ventilating fan. The instructions must indicate the following:

  • how to seal the fan properly with caulk or other similar material to inhibit air leakage to the exterior of the thermal envelope of the building
  • recommended ductwork types, elbows (including radii), terminations, sealants and lengths that will minimize static pressure losses and promote adequate airflow
  • proper installation of vibration-deadening materials such as short pieces of flexible duct
  • proper installation of insulation around the fan to minimize building heat loss and gain

In-line Fan Additional Installation Instructions: Manufacturers must include the following information on the in-line product or in product literature:

To ensure quiet operation of ENERGY STAR qualified in-line and remote fans, each fan should be installed with the sound attenuation techniques appropriate for the installation. For bathroom and general ventilation applications, at least 8 feet (2.4 metres) of insulated flexible duct must be installed between the exhaust or supply grille(s) and the fan. For kitchen range hood remote ventilation applications, where metal duct is generally required by code, a metal sound attenuator must be installed between the range hood and the fan.

Product Testing

Participants are required to perform tests according to the requirements of this specification and submit qualifying model information to the U.S. Environmental Protection Agency (EPA) for approval. Each qualifying model must be tested and certified by theHVI in accordance withHVI Standards 915, 916, and 920. The test results must be reported on the U.S. Residential Ventilating Fan Qualified Product Information (QPI) Form. Participants are required to report the following fan performance information:

Airflow Rating: The airflow of a residential ventilating fan must be measured in cfm. The cfm values shall be measured in accordance with ANSI/AMCA 210-07 or HVI 916. Fan testing setup shall conform to HVI 916, Section 6, Test Setups and Diagrams.

Note: Qualification is allowed only for base and base-derived models. Airflow certification cannot be performed for geometrically similar fans tested at other speeds or sizes.

Efficacy: The efficacy of the residential ventilating fan must be expressed in cfm/W. Manufacturers must calculate efficacy by using airflow and fan motor electrical power values as certified per the requirements of this specification. Fan motor electrical usage will be the only energy consumption considered for the efficacy calculation. Energy used for other fan auxiliaries, such as lights, is not included in the determination of fan efficacy

  • Bathroom and utility room fans, and in-line fans, with more than one speed must be tested and meet the efficacy requirements of this specification at each speed. The Partner must report to EPA the efficacy result at each speed.
  • Range hoods must be tested and meet the efficacy requirements of this specification in each possible configuration (e.g., vertical, horizontal). The Partner must report to EPA the efficacy result at each configuration.

Sound Rating: The sound output of a residential ventilating fan is measured in sones. Sound shall be measured and rated in accordance with HVI 915, or ANSI/AMCA Standard 300-08 and AMCA Publication 311-05 (spherical sones method only). Fan testing setup shall conform to HVI 915, Section 8, Test Setups.

  • Bathroom and utility room fans with more than one speed, must be tested and meet the sound level requirements of this specification at each speed. The Participant shall also be required to report to EPA the sound level at each speed.
  • Range hoods must be tested and meet the sound level requirements of this specification in each possible configuration (e.g., vertical, horizontal). The Participant shall also be required to report to EPA the sound level at each configuration. 

Static Pressure Reference Measurements: Ventilating fan performance characteristics such as motor power, airflow and sound rating must be reported to the EPA at specific static pressures. These reference measurements vary with the fan type and follow HVI 920 rating points. Reference measurements must be certified by the HVI and conducted in accordance with HVI Standard 920. The static pressure reference measurements are listed below for each qualifying fan type.

  • Ducted products (products with one duct, such as bathroom and utility room fans): 0.1 in. w.g. static pressure. The participant must also test and report products at 0.25 in. w.g. static pressure for airflow. The participant is not required to test sound levels or wattage at 0.25 in. w.g. static pressure.
  • Ducted range hoods must be tested at working speed as defined in the HVI Supplement, Range Hood Working Speed.
  • Direct-discharge (non-ducted) products: 0.03 in. w.g. static pressure.
  • In-line ventilating fans: 0.20 in. w.g. static pressure (wattage and cfm only).

Effective Date

The date on which manufacturers may begin to describe products as ENERGY STAR qualified under this version of the specification will be defined as the effective date of this agreement. The ENERGY STAR Residential Ventilating Fans specification is effective January 15, 2009.

Qualifying and Labelling Products: All products, including models originally qualified under previous versions of the specification with a date of manufacture on or after January 15, 2009, must meet this version of the specification in order to use ENERGY STAR on the product or in product literature. The date of manufacture is specific to each unit and is the date (e.g. month and year) on which a unit is considered to be completely assembled.

Note: Given that efficacy, sone, and warranty requirements have not changed from previous version to this version, models qualified under previous version meet the requirements of this version specification, and therefore do not need to be requalified under this version.

  • Range hoods qualified prior to January 15, 2009, the effective date of this specification, that were not tested at each possible configuration will remain qualified through October 1, 2009.
  • Range after October 1, 2009, range hoods with more than one possible configuration will no longer be considered ENERGY STAR qualified under this specification, and will be removed from the Residential Ventilating Fans Qualified Product List (QPL), unless they are retested and meet the requirements of this specification at each possible configuration. In the case of a failure to meet the requirements at any given configuration, the Participant shall take corrective actions to bring the product into compliance, or EPA will consider the product disqualified and remove it from the QPL.

Elimination of Grandfathering: Grandfathering is not allowed under this version of the specification. ENERGY STAR qualification under previous versions of the specification is not automatically granted for the life of the product model. Therefore, any product sold, marketed or identified by the manufacturer as ENERGY STAR qualified must meet the current specification in effect at that time.

Future Specification Revisions: ENERGY STAR reserves the right to revise the specification should technological and/or market changes affect its usefulness to consumers, industry or the environment. In keeping with current policy, revisions to the specification are discussed with the industry.