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Kill A Watt can help you reduce your power bill. Kill A Watt will help find power-wasting appliances then you decide whether it is worth keeping them plugged in. For standard 115 VAC appliances only, 15 Amps maximum, 125 VAC maximum.
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Technical Details
- Electricity usage monitor connects to appliances and assesses efficiency- Large LCD display counts consumption by the kilowatt-hour
- Calculates electricity expenses by the day, week, month, or year
- Displays volts, amps, and wattage within 0.2 percent accuracy
- Compatible with inverters; designed for use with AC 115-volt appliances
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By Theron Wierenga (Muskegon, MI)
Overall, I was quite pleased with this item. Simple to use, just plug in the your electrical device and push the watt button and you can see how many watts it's consuming. I used it to see just what my TVs and computers were using when I turned them off. I find my cable box uses as much energy turned off as it does turned on!
While it does plug right into a wall socket, I found it more convenient to put it on a short extension cord.
By Stephen Fisher (San Jose)
Does what it says it will and will help us understand our power usage. However, with the display set flat in the surface, it is hard to read when in use. Think that most wall plugs are down low, or at best, at counter level. In each case the viewer must bend to align their view with the display. A display tilted upward would be an improvement.
By Zzzzz (Cali)
This really does work, but the problem is that there is no easy way to put this in a plug if the plug is behind something. Obviously houses have things in them, so that is a little disappointing, but this does work well. I think that it helps in understanding which appliances and electronics are sucking out the most energy, but the problem is if you have a ton of surge protectors, then unplugging and plugging all your things is a hassle. I think there should be a surge protector Kill A Watt which and determine how much energy is being used by each socket.
By Ted Cashin (Avondale Estates, GA USA)
This is a pretty neat device that measures how many watts a device is using and keeps a total of kilowatt hours used over time (critical for things that use power in bursts like a refrigerator). I used it to measure how much power my HDTV receiver was using while it was turned off (15 watts!) and calculated that by using a remote control surge protector and unplugging the HD receiver when not in use, I can pay for the surge protector in 3 years. I was happy to learn that the standby power of my DVD player and home theater receiver were minimal. My old VCR uses a couple of watts just sitting there. I figured out that it costs me 2 cents to brew one cup of coffee.
So this is a great thing that will keep you entertained for a couple of days and give you some good information. Then you should lend it out to everyone you know! Let everyone audit their own energy use. Every library or fire station should have these to lend out to people. Okay, off my soapbox now.
The device itself needs some improvements. I know this is the low-end model and I appreciate that it is fairly inexpensive. But there is no reason in the world for this thing to block both plugs in a standard outlet. Yes, you can get an extension cord, but the design should be better. I was a little annoyed that it has three prongs, but I admit they probably don't have a choice since some devices that you plug in to it will need a ground. Second, just plugged in to the wall, the Kill a Watt reads 3 watts. While that is great to know, it totally messes up all the readings. My VCR on standby reads 5, but 3 of that is the Kill a Watt. Why do I want to know that? It should not be counting itself and I imagine that it also includes its own power usage in the kilowatt-hour running total. Memory and backlighting would be fine additions, but I don't really want to pay extra for them.
So I think it can be useful for tracking down energy vampires (my laptop uses one sixth as much power as my desktop computer; I don't think I'll buy another desktop). It would be best if you can find somebody and borrow this from them, but if not this is a good purchase.
By Kent Kjellgren (PA USA)
I bought the basic unit because I work in the energy field and wanted to know how the base unit works. It is fine, seemingly accurate and easy to connect. But it does require a bit of calculation to figure out the total usage. Plus if you plug it into the wall you then have to bend down there to read the results. If you unplug it you get a reset and all results are lost. Be a sport and upgrade to the one that does the math for you, the EZ model. I have not tried it yet but the principle seems right. Or go big time and get the power strip, then you can put it where you can read it.
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