[Bldg-sim] Existing Window Units (UNCLASSIFIED)

[Larry Degelman]

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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