Thanks for the tip! I bought a 2-pack last week, on 1 May.
A few weeks before that, I bought a Philips "A-shape but squished in the
middle" LED lamp at Home Depot for $5.97 + tax. This price was
subsidized by the local power company. I didn't have to fill out a
rebate or anything; the subsidy was already included in the shelf price.
Most of my house has CFLs, mostly Great Value (Walmart brand) 60 W or
100 W equivalent. I also have a few packages of GEnuine General
Electric 60 W Soft-White lamps; they are the real deal 60 W, before all
of the "52 W = 60 W" and "43 W = 60 W" stuff started.
I tested four lamps against each other on 8 May 2015. The GE 60 W and
the Philips A-shape LED were brand new; I did let them both run 5 minutes
to warm up. The Philips squished LED has been run for probably a few
dozen hours. The Great Value 60 W equivalent CFL has been run for
probably a few thousand hours; I didn't have a new one to test with.
The contestants, and what they claimed on their packaging:
Brand Type Shape lm W Hours K Temp Dim? TE? damp?
GE incand A19 840 60 1,000 ns ns ns ns ns
GV CFL spiral 825* 13 8,000 2700 +5F/-15C N ns +
Philips LED squish 800 10.5 25,000 2700 -4F/-20C Y N Y
Philips LED A-shape 800 8.5 10,958 2700 -4F/-20C N N Y
ns = not specified
* base-up, base-down "may be more than 5% different"
TE = suitable for use in totally enclosed fixture
+ "do not use where directly exposed to water"
The Philips A-shape LED didn't claim hours; it says it lasts 10 years
at 3 hours per day, 7 days per week. I calculated 10 * 365.25 * 3 to
get 10,957.5 hours.
How they looked to my watt-hour meter:
V A W VA Hz Power factor
GE incandescent 124.0 0.51 62 62 59.9 0.99
Great Value CFL 124.0 0.15 10 18 59.9 0.59
Philips squish LED 124.0 0.09 9 11 59.9 0.83
Philips A LED 124.0 0.10 7 12 59.9 0.61
Meter is a P3 International KILL-A-WATT P4400, S/N SH120xx. It always
reads 59.9 Hz; I am on regular utility power, not a generator,
inverter, etc. I have a normal residential tariff, so I only pay for
watts; they don't care about the power factor.
The line voltage usually runs 123-125 V in my area. I call it the
"CFL encouragement program".
It's interesting that both the CFL and the LEDs draw rather less than
what they claim on the box, at least in watts.
How they looked to my eyeballs:
I don't have any equipment to measure brightness. I ran all four lamps,
one at a time, in a vertical outlet with an adapter similar to this one
http://www.leviton.com/OA_HTML/ProductDetail.jsp?partnumber=61-I§ion=48515
. In other words, they were running base-horizontal, with no shade,
diffuser, etc. The room, about 12' x 12', was otherwise dark.
The incandescent and the two LED lamps appeared about equal to me. The
CFL appeared to be slightly less.
I also tried all four lamps on a switched outlet strip. I turned it on,
closed my eyes, turned it off, and opened my eyes. The spiral CFL and
Philips A LED seem to get dark more or less instantly. The Philips
squished-A LED and the incandescent lamp "ramp down" over about the same
amount of time.
How they behaved on a dimmer:
I installed all four lamps in a ceiling fan fixture that was controlled
by a Hunter fan controller and light dimmer from before 2009. The fan
was not running. I don't know if the fan and light have their own
circuits back to the dimmer, or if it's the type with a module at the
fan.
GE incandescent Normal. Did not turn off at 0% dimmer setting.
Great Value CFL Normal brightness from about 33-100% dimmer setting.
Reduced brightness from 0%-33% dimmer setting.
Philips squish LED Tracks the dimmer setting, but doesn't get as dim
at 0% dimmer as the incandescent.
Philips A LED Normal brightness from about 33-100% dimmer setting.
Reduced brightness from 0%-33% dimmer setting.
Money and guarantee stuff:
Warranty
Cost ea Pkg stated calc How to get warranty
GE incandescent 0.50? 4 ns
Great Value CFL 1.22 6 2yrs*4hrs 2922 return to store
Philips squish LED 5.97 1 3yrs*3hrs 3288 mail bulb+receipt+PP
Philips A LED 2.485 2 3yrs*3hrs 3288 mail bulb+receipt+PP
ns = not specified
PP = proof of purchase
The price on the GE is from memory. The price on the Great Value CFLs
is the current price, which is for a slightly different part number
(14 W, 900 lm). I think I may have paid closer to $1.50 for this CFL.
The warranties are given in terms of years and hours per day. I
calculated how many hours that works out to.
The warranty is nearly worthless on the Philips A LEDs. The cheapest I
can send an 8-ounce package from the Kansas City area to the New Jersey
zip code on the lamp packaging is First Class Parcel at $3.22, which is
more than the lamp costs. If I can get the lamp and packaging to 3
ounces, it would be $2.32 to ship... just barely worth it.
Some figures:
Lumens per...
claimed measured dollar for
watt watt a single lamp
GE incandescent 14.0 13.5 1,680
Great Value CFL 63.5 82.5 676
Philips squish LED 76.2 88.9 134
Philips A LED 94.1 114 322
I know "lumens/$ for a single lamp" isn't a great metric, but I think
it's one a lot of people unconsciously apply when shopping for lamps.
Enough lamps to last 2,922 hours (the shortest guarantee)
$0.14/kWh, which is about what I pay
Each lamp consumes its measured wattage
Lamp Energy Total Lumens/$,
count cost kWh cost Cost total cost
GE incandescent 3 $1.50 181.2 $25.36 $26.86 31.3
Great Value CFL 1 $1.22 29.2 $4.09 $5.31 155
Philips squish LED 1 $5.97 26.3 $3.68 $9.65 82.9
Philips A LED 1 $2.49 18.4 $2.57 $5.06 158
The A LED wins, mostly because of its low purchase price.
Enough lamps to last 25,000 hours (the longest claimed life)
$0.14/kWh, which is about what I pay
Each lamp consumes its measured wattage
Lamp Energy Total Lumens/$,
count cost kWh cost Cost total cost
GE incandescent 25 $12.50 1,550 $217.00 $229.50 3.66
Great Value CFL 4 $4.88 325 $45.50 $50.38 16.4
Philips squish LED 1 $5.97 225 $31.50 $37.47 21.4
Philips A LED 3 $7.46 175 $24.50 $31.96 25.0
The A LED wins again, because of its low price. However, the need to
replace it twice puts it closer to the squished LED lamp.
Stuff marked on the packaging:
brand UPC Where made
GE incandescent 0-43168-90005-8 USA
Great Value CFL 0-78742-09210-2 China
Philips squish LED 0-46677-43314-7 Mexico
Philips A LED 0-46677-45555-2 China or Mexico
The GE also had: Res 4855063, PC 41028, Desc 60A/W.
The CFL also had: Res 4768141, CPT36GV13WES.
The Philips squish LED also had: Model 9290002707, order code
BC10.5A19/SLIM/2700 DIM 120V, and another number of 4435 285 06561.
It also says "Ensemblado in Mexico" in two places, but nowhere does it
say "Made in Mexico".
The Philips A LED also had: Model 9290011350, order code
8.5A19/LED/827 ND 120V 2PK, and another number of 3235 826555 02.
Stuff marked on the lamps themselves:
GENERAL ELECTRIC SOFT WHITE 60 W 120 V
Great Value 13 W 120VAC 60Hz 180mA FLE 13HT3/2/SW FCC
UL Listed 6G49 HG RE295 E170197
PHILIPS 800Lumens Dimmable 10.5W 2700K 98mA 120v ~ 60Hz 14KK
9290002707 cULus LISTED LED Lamp 3PM5 5-pointed-star
The 5 pointed star resembles the one in the US EPA "Energy Star" logo,
but it's just the star - no text.
PHILIPS 800Lumens 8.5W 2700K 138mA 120V 60Hz P*5A 9290011350
cULus LISTED LED Lamp 3PM5
* is a strange symbol that looks sort of like a close/right parenthesis
rotated 90 degrees clockwise, with a small vertical line coming out of
it - a bit like the classic shape of a boat anchor.
This lamp also has "Made in China" in both English and French on it.
Links:
GE incandescent:
http://genet.gelighting.com/LightProducts/Dispatcher?REQUEST=CONSUMERSPECPAGE&PRODUCTCODE=41028
Great Value CFL: Similar lamps at
http://www.walmart.com/ip/Great-Value-GVS144B-Great-Value-14W-Soft-White-Cfl-Bulb/37482310
Philips squished LED:
http://www.usa.philips.com/c-p/046677433147/slimstyle-a19
Philips A-shape LED:
http://www.homedepot.com/p/Philips-60W-Equivalent-Soft-White-2700K-A19-LED-Light-Bulb-2-Pack-455576/205815532
Closing thoughts:
114 lumens per watt for $2.50 at a store within a few miles of a whole
bunch of the US. We live in the FUTURE.
Yes, this is what I do for fun on Friday nights. :)
Matt Roberds