[Bldg-sim] Existing Window Units (UNCLASSIFIED)

[Jim Dirkes]

This is a great place to start.  The 15 year old units certainly won't
be *better
*than these values.

I wonder how much *worse *they might be due to poor installation, corroded
and clogged evaporator and condensing coils and other wear and tear? 20%?
30%?

On Wed, Jun 3, 2015 at 12:22 PM, Larry Degelman <ldegelman at suddenlink.net>
wrote:

>   Hello John,
>
> I'm not sure if this this is what you’re looking for, but here's a table
> from a 33-page report (full report attached) by Southern California Edison
> Company, written in October 2007.  It covers a.c. EER values 25 years ago
> and 15 years ago.
> Working Paper WPSCREHC001, Rev. 1.  Title: *ENERGY STAR ROOM AIR
> CONDITIONERS. *
>
> *Table 4: 1605.1 (b) Table B-2 Standards for Room Air Conditioners and
> Room Air-Conditioning Heat Pumps*
> *Appliance                              Louvered     Cooling
> Capacity                Minimum EER*
> *                                                    Sides
> (Btu/hr)                   Effective            Effective*
> *
> Jan 1, 1990        Oct 1, 2000*
> *Room Air Conditioner             Yes                   <
> 6,000                        8.0                       9.7*
> *Room Air Conditioner             Yes              ≥ 6,000 -
> 7,999                8.5                       9.7*
> *Room Air Conditioner             Yes              ≥ 8,000 -
> 13,999              9.0                       9.8*
> *Room Air Conditioner             Yes              ≥ 14,000 -
> 19,999           8.8                       9.7*
> *Room Air Conditioner             Yes              ≥
> 20,000                           8.2                       8.5   *
> *Room Air Conditioner             No               <
> 6,000                              8.0                       9.0*
> *Room Air Conditioner             No               ≥ 6,000 -
> 7,999                8.5                       9.0*
> *Room Air Conditioner             No               ≥ 8,000 -
> 19,999              8.5                       8.5*
> *Room Air Conditioner             No               ≥
> 20,000                           8.2                       8.5*
> *Room A.C. Heat Pump            Yes             <
> 20,000                           8.5                       9.0*
> *Room A.C. Heat Pump            Yes             ≥
> 20,000                           8.5                       8.5*
> *Room A.C. Heat Pump            No              <
> 14,000                            8.0                       8.5*
>
> If you want the full report in Word Document format, Google “Work
> Paper-Energy Star Room Air Conditioners”, then click & download the URL
> that shown *[DOC] Work Paper-Energy Star Room Air Conditioners*.  This
> will be the 33-page 2007 report.
>
> Regards,
> =============================
> Larry O. Degelman, P.E., FIBPSA
> Professor Emeritus of Architecture
> Texas A&M University
> 2206 Quail Run
> College Station, TX 77845
> ldegelman at suddenlink.net
> =============================
>
> -----Original Message-----
> From: Eurek, John S NWO
> Sent: Tuesday, June 02, 2015 10:50 AM
> To: bldg-sim at lists.onebuilding.org
> Subject: [Bldg-sim] Existing Window Units (UNCLASSIFIED)
>
> Classification: UNCLASSIFIED
> Caveats: NONE
>
> I'm working on an energy audit for a building with old window A/C units.
> The average age is about 15 years old. Does anybody know where I can find a
> good estimate for the efficiency of a 15 year old unit?
>
> I know there is a wide range of efficiencies, then and now, depending on
> how much you are willing to pay. I'm looking something I can reference and
> file in my report to show where I got my numbers.
>
> Classification: UNCLASSIFIED
> Caveats: NONE
>
>
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-- 

James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim at buildingperformanceteam.com

Website <http://buildingperformanceteamcom>l  LinkedIn
<https://www.linkedin.com/pub/jim-dirkes/7/444/413>

 The truth is still the truth, even if nobody believes it.  A lie is still
a lie, even if *everyone* believes it.
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