October 20, 2011

Mohammed Khan

U.S. Department of Energy

R e : P r opos e d En e rg y E f f i c i e n c y M e t r i c f or R e si d e nti a l F u r n a c e Fa ns

D ea r M ohammed

,

The Ai r

- C onditionin g

, H ea ti n g

, a nd R e f r ig era t i on I nstitute ( AH R I ) is t he t ra d e a ss o c i a tion

re p re s e nting m a nu f ac t u rer s o f a i r

- c onditionin g

, h ea ti n g a nd c om m erc i a l re f r i g e r a tion

e quipm e nt. Ov e r 300 m e mb er s st r o n g

, AH R I is a n int e r n a tion a l l y r ec o gni z e d a dvo ca te f o r

the indust r y

, a nd c e r ti f i e s the p erf o r m a n c e of m a n y of the p r od u c ts m a nu fac t u re d b y our

m e mb er s. I n No r th Am e r i ca

, the a nn u a l output o f the H VA C R indust r y i s wo r th mo r e th a n

$20 billion. I n the Unit e d S t a t e s a lon e

, our m e mb er s e mpl o y a p p r o x im a t e l y 130,000 p e opl e

,

a nd suppo r t some 800,0 0 0 d ea l er s, c ont rac t o r s, a n d t ec hni c i a ns.

W e h a ve d e v e lop e d a n e n e rg y eff i c i e n c y m e t r ic whi c h a llows f o r a re l a tive p e r f o r m a n c e

c omp ar ison of re sid e nti a l f u r n ac e f a ns. The m e t r ic is e b a nd is b a s e d on A S H R AE S t a nd ar d

103

- 1993, “ Me thod of T e sting for Annual Fu e l Utilization Effi c i e n c y of R e sid e ntial C e ntral

Furna ce s and Boil e rs ”

. This st a nd ar d is c u rre nt l y re f ere n ce d in the C ode of Fe d e r al

R e g ul a tions a s a uni f o r m t e st m e thod f or m ea su r ing the e n e rg y c onsumption of f u r n a c e s a nd

boil er s.

The e b m e t r ic is a ra tio o f the e l ec t r i ca l e n e rg y c o nsum e d b y the r e sid e nti a l f u r n ac e fa n to the

tot a l f u e l a nd e l ec t r i ca l e n e rg y c onsum e d b y the f u r n ace

. The ra tio is simi l a r to the “ e ” m e t r ic

d e v e lop e d b y AH R I (f or m er l y G AMA) in 2003 to d e note e l ec t r i c a l l y eff i c i e nt f u r n a ce s, but

di ffer s in one k e y a sp ec t: the num era tor of the e b e qu a tion on l y a cc ounts f or the e l ec t r i c al

e n e rg y c onsu m e d b y the re sid e nti a l f u r n ac e fa n a nd not the tot a l e l ec t r i c a l c onsumption of

the f u r n a ce . The e b m e t r ic p r ovid e s the f ollowi n g b e n ef its:

• A re l a tive e l ec t r i c a l p er f o r m a n c e c omp ar ison of r e sid e nti a l f u r n a c e f a ns.

• P os e s a limit e d re po r ti n g

, t e sti n g a nd c a l c ul a ti o n bu r d e n on the indust r y sin c e it is

b a s e d on the e x isting A F UE t e st st a nd ar d wh i c h is ref e re n c e d in the C ode of Fe d era l

R e g ul a tions.

E x hib i t 1 in c lud e s d e t a i l s on our p r opos e d re sid e nti a l f u r n ac e f a n m e t r i c

, e b

. P l ea se do not

h e sit a te to c ont ac t me if y o u h a v e a n y q u e stions or n ee d a n y f u r th e r c l ar i f i c a tions.2 | P a g e S in cere l y

,

Ani r uddh R o y

R e g ul a to r y E n g i n eer

Ai r

- C onditionin g , H ea ti n g

, a nd Re fr i g e ra tion I nstitute

2111 W ilson B oul e v ar d, S uite 500

A r lin g ton, VA 2220 1

- 3 0 01, U S A

703

- 600

- 0383 P hone

703

- 562

- 1942 F a x

ar o y @ a h r i n e t.o r g3 | P a g e E x h i b it 1

– P r o p os ed R e si d e n t ial F u r n a ce F an Metr i c

L ittle e b B low e r El ec t r i ca l En e rg y D e s c r iptor

B a s e d on A S H R AE S t a nd ar d 103

- 1993, Ap p e ndix C

, S ec tion 3

F or f u r n a c e s e quipp e d w i th sin g le st a g e c ont r ols:

F or f u r n a c e s e quipp e d w i th two st a g e c ont r ols:

F or f u r n a c e e quipp e d with st e p modul a ting c ont r o ls:

W h ere:

B OH SS , B OH R , B OH H , B OH M a s d ef in e d in A S H R AE 103

- 1993, App e nd i x C

, S ec tion 1

B E, B E R , B E H , a s d ef in e d in A S H R AE 103

- 1993, App e ndix C

, S ec tion 1

y = a s d ef i n e d in A S H R AE 103

- 1993, App e ndix C

, S ec tion 1

En e rg y D e s cr ipto r

, L ittle e b

W h ere:

E A E , E F a s d ef in e d in A S H R AE 103

- 1993, App e n dix C

, S ec tion 8

E A B a s d e f in e d a bo v e