Watt Way
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 Pioneer TS 1620 II 2 Way 65 Car Speaker  US $40.00
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 Two JBL GT Series 10 1000W Watt subwoofers in custom box local pickup BHM US $220.00
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 MB Quart PSC 213 2 Way 525 Car Speaker US $59.00
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 Kicker Comp 12 12 Component Sub Woofer C12 New Free Shipping US $44.00
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 Kenwood KFC 6993PS 4 Way 6 x 9 In Car Speaker 500W NIOB 986048 US $20.50
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 Kicker K525 2002 3 Way 525 Car Speakers System US $69.99
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 Dual Electronics DS573 2 Way 5 x 7 Car Speaker US $39.99
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 Alpine SPS 4629P 4x 6 Coaxial Car Speaker US $28.50
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 Punch Speakers For Car 50 Watts OK Condition 2x Speakers for price of ONE US $20.00
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 Audiobahn AS57PQ 2 Way 6 x 8 Car Speakers Pair Set US $74.99
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 Scosche Industries EFX HDC5250 2 Way 525 Car Speaker US $79.99
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 Soundstream EGS52 5 3 Way 525 Car Speaker US $89.99
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 Kenwood KAC 728S 2 Channel Power Amp NO RESERVE FREE S H US $30.00
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 Kenwood KFC X173 2 Way 65 Car Speaker US $50.00
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 MA Audio 400RMS WATTAGE FULL MOSFET car audio amplifier Amp Subwoofer speakers US $49.00
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 CAR RECOTON PHASE LINEAR 100W 5 1 4” DUAL CONE CAR LOUDSPEAKER 4 FATHERS DAY US $35.00
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 Kenwood KFC X1730P 2 Way Car Speakers System US $75.00
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 JL Audio C3 570 2 Way 5 Car Speaker US $250.00
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 Jl Audio 500 1 Car Amplifier US $127.50
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 JL Audio JL12W7 3 1 Way 12 Car Subwoofer US $255.00
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 BRAND NEW Kicker 10C124 Comp 12 Vehicle Subwoofer Speaker 12 inch C124 Car Sub US $91.00
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 JL Audio 12W7 Car Subwoofer US $180.00
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 Pioneer TS A4672R 3 Way 4 x 6 Car Speaker ONE SPEAKER ONLY US $5.50
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 2 Kicker CVR 12 Car Subwoofers 2Ohm US $180.00
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 2 Kicker 12 Car Subwoofer US $80.00
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 Memphis Belle 16 MCH1300 Amplifier 5 Channel Amp75W X 4 1100 x 1 RMS US $250.00
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 Roadmaster RS630 3 Way 6 x 9 Car Speaker US $35.00
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 Polk Audio db525 2 Way 525 Car Speaker US $40.00
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 Coustic 65CS 65 150W 2 Way Separates Speaker System US $33.00
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 MTX X Thunder Xt502 20 Watt 2 way Coaxial 525 Sspeakers US $22.00
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 Bazooka ELC5252P EL Series 525 Inch Coaxial Speakers US $20.00
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 Bazooka BT1014 1 Way 10 Car Subwoofer 200 watts US $110.00
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 MTX Audio TDX5202 5 1 4 2 way Thunder Dome Axials Speakers US $43.00
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 Bazooka BT1214 1 Way 12 Car Subwoofer US $154.00
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 Pioneer Deh p5200hd USB CD MP3 In Dash Receiver US $126.50
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 AWESOME Hitron HPA4004 4 Channel Amplifer US $18.00
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 Kenwood KFC W3013PS 1 Way 12 Car SUBWOOFER Car Mobile Audio Stereo US $22.00
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 Orion 8001 Cobalt Car Amplifier w LPF bass boost of 12DB RCA IN OUT US $65.00
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 Bazooka ELC5702P EL Series 5 X 7 Coaxial Speakers US $25.00
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Put a Kill A Watt P3 to Work for You: How to Use a Kill A Watt P4400 Power Usage Monitor
The Kill A Watt P3 series is the "standard" home kilowatt hour meter. Just plug it into the wall, plug an appliance or lamp into it, then leave it alone for a few days. It will automatically total up the watt-hours used and the hours it's been plugged in. It provides important information that helps you lower electricity bills in the most cost-effective way.
Measuring Loads
You'll normally want to let Kill A Watt and the load run for a few days so that you get average readings. You should write down the readings at about the same time as you plugged everything in so that you're capturing full daily usage patterns.
So after a couple of days press the KWH/Hour button and write down the total kilowatt hours consumed. Press the KWH/Hour button again and note the hours of the "recording." Dividing kWh by Hours gives you the average kilowatt hour draw, per hour. Multiply by 24 hours and you have exactly the total kilowatt hour load per day. Multiply this by your utility's rate per kWh and you have the daily energy cost for that load. From there it's easy to get monthly and yearly costs.
Small Loads
Some appliances, such as digital clocks, draw only a few watts. Due to the display resolution you'll need to accumulate data for a couple of hundred hours to get an accurate read out. This kind of accuracy isn't too important for a home energy budget, but it can be important if you're planning for a solar-powered remote cabin. The Kill A Watt P3 has sufficient accuracy and resolution to measure these small loads.
Phantom Loads
Many appliances are energy vampires. They draw standby loads even when they're turned off. It's easy to find an energy vampire – the killawatt will show a wattage (and volt-amp and amp) draw even when the appliance is turned "off." You can take the wattage display and multiply by 24 hours to see how many watt hours are used each day. It's not uncommon for a single phantom load to be ½ kilowatt hour per day. That's only about 5 cents a day but over a year that adds up to $18. Entertainment centers and personal computers are notorious vampires. It's not at all uncommon for all phantom loads and always-on items like cordless phones to use over $100 worth of electricity per year and represent as much as 20% of your total electricity use. You can slay most vampires by simply unplugging them or putting them on a timer. And each incandescent bulb your replace with a CFL will save $5-$10 per year. So you see how it can be relatively easy to cut your bills by 10% without replacing any major appliances.
Home Energy Assessment
A kilowatt hour meter like the Kill A Watt P3 should be a part of any home energy audit. Looking up typical appliance wattage from a table and estimating usage hours can lead to missing both big savings opportunities and small easy-to-fix losses. It's important to know what your old appliance is using when considering replacing it. And standby phantom power can vary tremendously between different brands and even different models. Here's a priority list of electric loads to check out.
Refrigerators – usually the largest electricity user after central air conditioning. Although it's name-plate power rating may not seem that much worse than new energy-efficient units, less insulation and age-related problems can cause it to run many more hours.
Window air conditioners – Like refrigerators, inefficiencies may show up in the hours it needs to run and actual (versus name-plate and typical) watts used.
Lamps – Lighting is another big energy user. You may be surprised how long, or how little, a particular light is used. Or just how many watts a particular lamp uses.
Personal computers and peripherals – There's a lot of variation between regular load and especially standby load for different brands and models.
Fans and portable heaters.
Stereos – some models with remote controls have surprisingly high standby loads.
Video games – there are huge differences in both standby power and turned-on power between the leading consoles.
Washing machines and dryers – even gas-fired dryers can be a significant electricity draw.
Microwaves and toaster ovens – Another appliance with lots of variations between manufacturers and models. For an infrequently used appliance, standby power may be greater than the power of actual use!
The Bottom Line
With a list of all your electricity users, it's easy to find the biggest loads. You can focus on those and decide where you'd benefit from an appliance replacement. In other cases a simple timer or motion-sensor may be a quick and easy path to save on electricity bills. Sometimes lower electric bills are as simple as turning off the lights and TV when you leave the room. Knowing exactly how much it's costing you can be a great motivator. Knowing your electricity users, you can easily save 5%, 10%, sometimes even 30% off your electricity bill. That can be hundreds of dollars each year. Not bad for a $25 Kill A Watt P3 kilowatt hour meter.
About the Author
You can find out about the various Kill A Watt models, and purchase them here.
JD Roberts has over 10 years experience as an energy professional. His projects have ranged from his own home to managing the auditing of millions of square feet of commercial buildings. He has also been involved in the design of energy-efficient homes and commercial solar energy systems.
