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Article #499Heating, Ventilating, and Air Conditioning (HVAC) Definitions
From: WebMaster
Date: Mon, 02 Mar 1998 00:00
Date: Mon, 02 Mar 1998 00:00
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http://www.groupe-master.com
9 branches in Canada
Heating, Ventilating, and Air Conditioning (HVAC) Definitions=20
Being an informed HVAC buyer begins with understanding the industry =
language. Your YORK Dealer will use terms such as the following:
Efficiency Terms=20
In 1992, the Federal Government established minimum efficiency =
requirements for all heating and air conditioning equipment. If your =
present HVAC equipment -- a furnace, heat pump, or air conditioning =
system -- was purchased and installed before that date, it could be =
highly inefficient by today's standards.
Efficiency ratings are important to understand because installing a new =
unit could achieve significant energy cost reductions. And that could =
save you from the higher operating expenses of some pre-1992 equipment.
AFUE% =3D Furnace Efficiency. "AFUE" is a measure of a furnace's heating =
efficiency. It stands for Annual Fuel Utilization Efficiency. The higher =
the AFUE%, the more efficient the product. The government's established =
minimum rating for furnaces is 78%.
=20
HSPF =3D Heat Pump Heating Efficiency. It stands for Heating =
Seasonal Performance Factor, or HSPF. The higher the HSPF rating, the =
more efficient a heat pump is at heating your home. There is no =
legislated minimum rating.
=20
SEER =3D Cooling Efficiency. "SEER" is a measure of cooling =
efficiency for air conditioning products. SEER stands for Seasonal =
Energy Efficiency Ratio. The higher the SEER rating number, the more =
energy efficient the unit. The government's established minimum rating =
for air conditioning is 10.
=20
Basic Heating And Air Conditioning Definitions=20
Air Handler. The portion of a central air conditioning or heat pump =
system that moves heated or cooled air throughout a home's ductwork. In =
some systems, a furnace handles this function.
=20
Heat Source. A body of air or liquid from which heat is collected. =
In an air source heat pump, the air outside the house is used as the =
heat source during the heating cycle.=20
=20
Indoor Coil. The portion of a heat pump or central air conditioning =
system that is located in the house and functions as the heat transfer =
point for warming or cooling indoor air.=20
=20
Outdoor Coil/Condensing Unit. The portion of a heat pump or central =
air conditioning system that is located outside the home and functions =
as a heat transfer point for collecting heat from or dispelling heat to =
the outside air.
=20
Single Package. A year 'round heating and air conditioning system =
that has all the components completely encased in one unit outside the =
home.=20
=20
Split System. A heat pump or central air conditioning system with =
components located both inside and outside of a building -- the most =
common types installed in homes.=20
=20
Supplementary Heat. The auxiliary or emergency heat provided at =
temperatures below a heat pump's balance point. It is usually electrical =
resistance heat.=20
=20
Technical Heating And Air Conditioning Definitions=20
Balance Point. An outdoor temperature -- usually between 30=B0F to =
45=B0F -- at which a heat pump's output exactly equals the heating needs =
of the house. Below the balance point, supplementary electric resistance =
heat is needed to maintain indoor comfort.=20
=20
British Thermal Unit (Btu). The amount of heat required to raise the =
temperature of one pound of water (about one pint) by one degree =
Fahrenheit.=20
=20
Coefficient of Performance (COP). A ratio calculated by dividing the =
total heating capacity provided by the heat pump, including circulating =
fan heat but excluding supplementary resistance heat (Btu's per hour), =
by the total electrical input (watts) x 3.412. (See Heating Seasonal =
Performance Factor, above.)=20
=20
Energy Efficiency Ratio (EER). A ratio calculated by dividing the =
cooling capacity in Btu's per hour (Btuh) by the power input in watts at =
a given set of rating conditions, expressed in Btuh per watt =
(Btuh/watt). (See Seasonal Energy Efficiency Ratio, above.)=20
=20
Some definitions supplied courtesy of ARI, the Air-Conditioning & =
Refrigeration Institute.
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<DIV>
<H3><A =
href=3D"http://www.groupe-master.com">http://www.groupe-master.com</A></H=
3>
<H3>9 branches in Canada</H3>
<H3>Heating, Ventilating, and Air Conditioning (HVAC) Definitions </H3>
<P>Being an informed HVAC buyer begins with understanding the industry =
language.=20
Your YORK Dealer will use terms such as the following:</P>
<P><B>Efficiency Terms</B> </P>
<P>In 1992, the Federal Government established minimum efficiency =
requirements=20
for all heating and air conditioning equipment. If your present HVAC =
equipment=20
-- a furnace, heat pump, or air conditioning system -- was purchased and =
installed before that date, it could be highly inefficient by today's=20
standards.</P>
<P>Efficiency ratings are important to understand because installing a =
new unit=20
could achieve significant energy cost reductions. And that could save =
you from=20
the higher operating expenses of some pre-1992 equipment.</P>
<UL>
<P><B><A name=3Dafue>AFUE%</A> =3D Furnace Efficiency. =
</B>"AFUE" is a=20
measure of a furnace's heating efficiency. It stands for <B>Annual =
Fuel=20
Utilization Efficiency</B>. The higher the AFUE%, the more efficient =
the=20
product. The government's established minimum rating for furnaces is =
78%.</P>
<P><B><A name=3Dhspf>HSPF</A> =3D Heat Pump Heating Efficiency.</B> =
It stands=20
for <B>Heating Seasonal Performance Factor</B>, or HSPF. The higher =
the HSPF=20
rating, the more efficient a heat pump is at heating your home. =
There is no=20
legislated minimum rating.</P>
<P><B><A name=3Dseer>SEER</A> =3D Cooling Efficiency</B>. =
"SEER" is a=20
measure of cooling efficiency for air conditioning products. SEER =
stands for=20
<B>Seasonal Energy Efficiency Ratio</B>. The higher the SEER rating =
number,=20
the more energy efficient the unit. The government's established =
minimum=20
rating for air conditioning is 10.</P></UL>
<P><B>Basic Heating And Air Conditioning Definitions</B> </P>
<UL>
<P><B>Air Handler.</B> The portion of a central air conditioning or =
heat=20
pump system that moves heated or cooled air throughout a home's =
ductwork. In=20
some systems, a furnace handles this function.</P>
<P><B>Heat Source.</B> A body of air or liquid from which heat is =
collected.=20
In an air source heat pump, the air outside the house is used as the =
heat=20
source during the heating cycle. </P>
<P><B>Indoor Coil. </B>The portion of a heat pump or central air=20
conditioning system that is located in the house and functions as =
the heat=20
transfer point for warming or cooling indoor air. </P>
<P><B>Outdoor Coil/Condensing Unit. </B>The portion of a heat pump =
or=20
central air conditioning system that is located outside the home and =
functions as a heat transfer point for collecting heat from or =
dispelling=20
heat to the outside air.</P>
<P><B>Single Package. </B>A year 'round heating and air conditioning =
system=20
that has all the components completely encased in one unit outside =
the home.=20
</P>
<P><B>Split System. </B>A heat pump or central air conditioning =
system with=20
components located both inside and outside of a building -- the most =
common=20
types installed in homes. </P>
<P><B>Supplementary Heat. </B>The auxiliary or emergency heat =
provided at=20
temperatures below a heat pump's balance point. It is usually =
electrical=20
resistance heat. </P></UL>
<P><B>Technical Heating And Air Conditioning Definitions</B> </P>
<UL>
<P><B>Balance Point.</B> An outdoor temperature -- usually between =
30°F=20
to 45°F -- at which a heat pump's output exactly equals the =
heating=20
needs of the house. Below the balance point, supplementary electric=20
resistance heat is needed to maintain indoor comfort. </P>
<P><B>British Thermal Unit (Btu). </B>The amount of heat required to =
raise=20
the temperature of one pound of water (about one pint) by one degree =
Fahrenheit. </P>
<P><B>Coefficient of Performance (COP). </B>A ratio calculated by =
dividing=20
the total heating capacity provided by the heat pump, including =
circulating=20
fan heat but excluding supplementary resistance heat (Btu's per =
hour), by=20
the total electrical input (watts) x 3.412. (See Heating Seasonal=20
Performance Factor, above.) </P>
<P><B>Energy Efficiency Ratio (EER). </B>A ratio calculated by =
dividing the=20
cooling capacity in Btu's per hour (Btuh) by the power input in =
watts at a=20
given set of rating conditions, expressed in Btuh per watt =
(Btuh/watt). (See=20
Seasonal Energy Efficiency Ratio, above.) </P></UL>
<P><I>Some definitions supplied courtesy of <A =
href=3D"http://www.ari.org"=20
target=3Dblank>ARI, the Air-Conditioning & Refrigeration=20
Institute.</A></I></P></DIV></BODY></HTML>
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Technical Details
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 104d3a,7c5ea14a337269dc,start X-Google-Attributes: gid104d3a,public From: "WebMaster" <Webmaster@groupe-master.com> Subject: Heating, Ventilating, and Air Conditioning (HVAC) Definitions Date: 1998/03/02 Message-ID: <6dfnq9$8f7$1@news21.bellglobal.com> X-Deja-AN: 330227918 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01BD461D.97F2A760" X-MimeOLE: Produced By Microsoft MimeOLE V4.71.1712.3 X-Complaints-To: usenet@news20.bellglobal.com X-Trace: news21.bellglobal.com 888889993 8679 (None) 206.172.227.52 Organization: Le Groupe master ltee Mime-Version: 1.0 Newsgroups: can.construction