1

Standalone fans (In/Out of Scope?)

In Scope? Fan Equipment classes

Yes Axial cylindrical housed 

Yes Panel

Yes Centrifugal housed, excluding inline and radial

Yes Centrifugal unhoused, excluding radial

Yes Inline and mixed-flow

Yes Centrifugal Radial housed, shrouded impeller 

Yes Power Roof Ventilator

In Scope? Fan category

No Cross flow fans

No Safety fans 

(including induced flow fans and jet fans) 

No Circulating fans

PROPOSAL FOR VOTE:

This rulemaking will explicitly exclude the following types of fans: cross flow fans, 

safety fans (including induced flow and jet fans), and circulating fans. Other 

exclusions may be added in the future.

Vote results:
2

Embedded fans 

• Embedded fans

– Assembled by OEMs, designed specifically for use in HVAC equipment 

and are not distributed in commerce as stand alone equipment.

– Purchased by OEMs, and may or may not be also distributed in 

commerce as a stand alone fan.

– Some embedded fans are used in already regulated equipment.

• How does the working group want to address these 

fans?

– Some cannot be tested outside the equipment

– Some are incorporated in covered equipment with a metric that already 

captures fan energy use,

– Some are incorporated in equipment that do not represent large savings 

potential, etc.

– ...
3

Template (Name of Regulated Equipment)

Names of 

Categories of 

Fans used in 

[NAME of 

REGULATED 

EQUIPMENT]

Also fall into 

the 

following 

Equipment 

class(es)

Is the fan 

energy use 

captured in the 

[NAME of 

REGULATED 

EQUIPMENT]

test procedure 

and metric?

Does the fan 

have 

differentiating 

design or 

technical 

features?

Testable

configuration

Test

Method 

and 

Metric

Annual

sales 

estimate

Annual 

Fan 

Energy 

Use

Estimate 

per unit

Scope of 

this TP 

and 

Standards

?

Yes/ No – if yes, 

please list: e.g. 

third party 

certification.

E.g. test the 

regulated 

equipment 

only, test “fan 

in a box”, etc.

E.g. test 

regulated 

equipment 

only, 

already in 

the 

equipment 

metric. 

Yes or No?
4

Template (Non-Regulated Equipment)

Names of Categories

of Fans used in 

[NAME of REGULATED 

EQUIPMENT]

Also fall into 

the following 

Equipment 

class(es)

Does the fan 

have 

differentiatin

g design or 

technical 

features?

Testable

configuration

Test

Method 

and Metric

Annual

sales 

estimate

Annual Fan 

Energy Use

Estimate 

per unit

Scope of 

this TP and 

Standards?
5

Illustrative Example of How to Fill Out: Fans in Air Handling 

Units (Non-Regulated Equipment)

Names of Categories

of Fans used in 

[NAME of REGULATED 

EQUIPMENT]

Also fall into 

the following 

Equipment 

class(es)

Does the fan 

have 

differentiatin

g design or 

technical 

features?

Testable

configuration

Test

Method 

and Metric

Annual

sales 

estimate

Annual Fan 

Energy Use

Estimate 

per unit

Scope of 

this TP and 

Standards?

Double –width/double 

inlet (DWDI) housed 

centrifugal fans

Single-width/single inlet 

(SWSI) housed centrifugal 

fans

Centrifugal 

housed, 

excluding inline 

and radial

Yes/ No – if 

yes, please list: 

e.g. third party 

certification.

“fan in a box” AHRI 430 XXX units XXX kW/unit In/Out

Single-width/single-inlet 

(SWSI) unhoused 

centrifugal fans

(plenum or plug fans)

Centrifugal 

unhoused,

excluding radial

“fan in a box” AHRI 430 In/Out

Vane axial

Tube axial

Axial cylindrical

housed

“fan in a box” AHRI 430 In/Out

Mixed flow usually SWSI Inline and 

mixed-flow

“fan in a box” AHRI 430 In/Out