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P3 International P4460 Kill A Watt EZ Electricity Usage Monitor , grey

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At a glance

Condition
New
Pattern
Monitor
Model
P4460
Dimensions
3.81"D x 5.72"W x 12.7"H
Color
grey
Form Factor
Cabinet
Power Source
Battery Powered
In the box
usage monitor
Warranty
1 Year Limited

Features 5

  • Calculates cost and forecasts by week, month, and year
  • Displays eight critical units of measure on the large LCD display
  • Built-in backup of accumulated information.
  • Accurate within 0.2%

Description

Now you can cut your energy costs and find out what appliances are actually worth keeping plugged in. Simply connect these appliances to the Kill A Watt EZ, and it will assess how efficient they really are. The large LCD display will count consumption by the Kilowatt-hour, same as your local utility, letting you calculate your cumulative electrical expenses and forecast by the day, week, month, even an entire year. Also check the quality of your power by monitoring voltage, line frequency, and power factor. Now you’ll know if it is time for a new refrigerator or if that old air conditioner is still saving you money. With the amazing Kill A Watt EZ you'll know "watts" killing you. From the Manufacturer The cost of electricity is soaring but you can help reduce your energy costs with the new Kill A Watt EZ. Simply plug it into a wall socket and then plug in your appliance to assess how efficient they really are. The large LCD will display the power consumption by the kilowatt-hour and the built-in memory retains accumulated readings when power is interrupted. Program in your local utility rate and display projected costs by hour, day, week, month, or year. Evaluate the quality of the electrical power provided from your utility company by monitoring voltage, line frequency (Hz), and power factor (VA). Perfect for detecting voltage drops and brownout conditions before they damage delicate equipment. The knowledge you gain from Kill A Watt EZ can save you thousands of dollars.

Specs 22

Brand P3
Color grey
Form Factor Cabinet
Power Source Battery Powered
Heating Method Forced Air
Recommended Uses For Product Home
Mounting Type Wall Mount
Room Type Living Room

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Top Amazon Reviews

Five Star, But You'll Find More Positive Status Quo Than Negative
Pattern Name: Monitor
We got ours last night and got down to business. Serious home-economics business. The big ones I was worried about were entertainment center with Wii, stereo, etc. "on idle", a laptop station in another room that is often left on and then finally I just installed a window A/C unit in our bedroom to avoid paying for all-night whole-house A/C when we are only in one room (childless couple as you may have imagined). Anyhow, the entertainment center turned out to be costing us something like $15...per year. A buck and change a month. Not worth the hassle of fooling with, but I did put the Wii, amp, preamp and various disc players on a single switch on our uber-power supply in order that we can squelch even that. I did some preliminary stuff around the house...lots of stuff like *newer* cell phone chargers draw almost literally nothing. I think it was $1.76 per YEAR *when charging* for our cell phone chargers...a pittance at cents a month. When phones are not plugged in, our chargers drew only LED power...i.e. unregisterable as it was less than one-tenth of a cent an hour. So...mostly just confirmation that a lot of the potential "vampires" out there really aren't. BUT...WOW...in some cases, you must be careful... We stuck our Bunn coffeemaker in the thing. The numbers started ratcheting up...fifty dollars per year...seventy...one hundred and twenty...one hundred and fifty... OH MY GOODNESS... The Kill A Watt EZ works on averaging over time, I realized we had *just* turned this thing on and it was going from cold to "heat water up - QUICK!" mode...in other words, drawing lots of power. That said, while Bunn coffeemakers I believe make the best tasting coffee and quick, they do the "quick" part of that by leaving the water heater on standby mode, always heating the water up as it cools. Naturally, I have always wondered about how much that sucker costs per year. I think I will feed it some water and let it run for a few days to get an averaged yearly cost. Should be interesting and if Amazon lets me I will report back. Secondly, another issue: I plugged this thing into our turned-off Oster blender...this is one of the classic vintage style blenders, if that matters at all...and it was reporting something like $4.75 per month, IDLE. Weird. Then, after a bit, that number started dropping...and dropping...and dropping. Perhaps when it first starts, there is some big surge that runs through it that was taking a while to be diluted by the draw-per-minute averaging in the Kill A Watt EZ. Anyhow, I really think that thing uses nothing when plugged in and idle. *** The important point to the blender example is that there will be a temptation to perform quick-hit analyses on your appliances, but this is not always the best strategy. This thing will give an accurate yearly cost for something that draws consistently, but anything that has a weird spike when first plugging it in or that turns on and off in terms of draw, like a Bunn coffee maker's water heater or a window A/C unit that blows cheap fan constantly, but turns on it's power-consuming compresser here and there must be left on for a while to get that averaging going. That is the only way you'll get an accurate and realistic actual-use cost. *** Microwave was also basically nothing year-long when not in use...I think it was one dollar a year, maybe. It was apparently just powering it's little calculator-style LCD display, and that was it. The power gets sucked during cooking, but how many minutes per day are you doing that? A floor fan costed $11...per year...to run continuously. The way we were using it, it was probably costing us $4.50 a year...and to think I used to get upset if one of us left it on all day. HA! My InFocus projector (800x600 DLP projector) draws 1 cent per hour. Well, wow, that shocked me. I left that on for a while and it still reported 1 cent per hour. Good stuff! I am sure they will come out with LED projectors that use 1 cent per 10 hours, but until that time, I have no good reason to switch or upgrade...power is cheap. (Oh, forgot to mention, power is 12 cents per kWh where I live at the moment...price your own accordingly). Oh, that window A/C unit is - I think - about 8,000 BTU and came in at thirty-six cents per night. I am sure our A/C for the house was running at least dollar a night, judging by our bill, so this should save us 60% (36 cents instead of a buck) of about half of our bill (since 8 hrs we use A/C wall unit, 8 hrs we use whole-house and 8 hrs it is OFF completely during the day when we are gone). So 30% savings right off the bat...and that will pay for the A/C wall unit very quickly. In the final analysis, there wasn't much adjustment made. This thing did not really directly pay for itself monetarily, but in terms of peace-of-mind, it definitely helped. I think our major expense is air conditioning, and after two months of our bill jumping over 50%, I am hoping the use of the window unit solves our energy "crisis." I sure couldn't find anything else (plugged in anyways, hardwired is another story) that seemed to draw anywhere near significant amounts of power. The Kill A Watt EZ was worth it for me as a "peacemaker" - both with myself and with my wife. The peace-of-mind was easily worth the thirty bananas it costed, and the hour-day-month-week-year calculations are WELL worth the ten or twelve more bones you pay for the "EZ" model over the regular P4400...if I had to do it all over again, I'd still pick the P4460...well worth the hassle savings. The criticisms about it being hard-to-read and the solution to stick it on an extension cord (I used a power strip, which was perfect as it was short and highly portable versus a big bulky three-prong extension cord) are both spot on. Well done, P3, for a great product. Our "vampire hunt" didn't turn up any convincing vampires, but it did ease our minds about them and allowed us to better focus our energy saving...well...energies. ... show more
Reviewed in the United States on August 18, 2010 by M. M. Jackson
Improved an already great product
Pattern Name: Monitor
I owned the original P4400 Kill-A-Watt until I loaned it to someone who never returned it. The original was an excellent unit but with a major flaw. This P4460 Kill-A-Watt EZ fixes the flaw and has a new very useful feature. The flaw in the original unit was that it didn't retain data after it was unplugged. It was aggravating to let it run for an entire day only to lose the accumulated data because someone accidentally unplugged it, or there was a momentary power failure, or light was too dim to read it. This new model solves this problem entirely. It retains all data until you hit the Reset button. The button needs to be held down for several seconds before it does the reset, making it much less likely that you'll accidentally reset it. A convenient feature that was absent on the original Kill-A-Watt but that has been added to the new one is the ability to enter the hourly rate that your utility charges for electricity. This isn't a huge advantage for me, because I'm logging all the data on a spreadsheet where I can automatically display total cost at the various rate tiers that Pacific Gas & Electric charges, but for many people it will be a huge advantage not to have to compute the actual cost for each reading by multiplying kwh by what you pay for each hour of electricity. The Kill-A-Watt EZ does it for you. For me, this is a must-have item. If you're concerned either about your utility costs or about preserving the environment, this could make a big difference for you. It's eye-opening to see how much power some electric devices consume, and surprising how efficient some are. This is a great way to determine how to reduce the power your home, office, or workshop is consuming. Many owners complain about the lack of a dongle that would make it easier to plug the Kill-A-Watt into a wall socket. I just use a short 14AWG extension cord rated for 1875 watts. A built-in dongle would be nice to have but it's not a major deal for me. Another complaint I see is about the menu on the new model. I think it's an improvement over the original. It's easy to use: - Hold the red "Set" button several seconds, then enter the rate your utility charges per kwh (you should be able to find it on your bill); after you select the right rate, press "Set" again to save it - After pressing the "Set" button, press the "Up" and "Down" buttons to set the rate. The digits change fast. - Hold the "Reset" button several seconds to set all readings back to zero (except the rate that you set with the "Set" button) - Press the "Menu" button to cycle through the Elapsed Time, Volt, Cost, Rate, and KWH displays For me, the new button layout and menu system is clearer to use than the older model's buttons. I've just received the Kill-A-Watt EZ last night so I can't attest to its durability, but I had no problems with my previous Kill-A-Watt and I don't anticipate any arising with this one. If any problems do arise, I'll update this review. ... show more
Reviewed in the United States on December 23, 2011 by Erik Gordon Bainbridge
Good tool, too few options for $
Pattern Name: Monitor
The Kill A Watt is a very useful tool for determining electrical usage. I created a simple spreadsheet to help me determine the cost of running various appliances in my home, and I was quite surprised with the results. The device, overall, is very simple to use. A brief read-through of the short manual takes approximately 5-10 minutes, and then you're ready to go: plug it into the wall, plug in your appliance, and reset the accumulated time. Then it's only a matter of navigating the simple to use menus. The largest drawback I found with this device is that it's too wide. On a normal upper/lower wall outlet this would not be a problem, but if you are trying to use it on a plug strip to analyze one item on that plugstrip, it will take up the space necessary for two or three outlets. Obviously, there are easy ways around this, but the bulkiness of the device is too much given the simple tasks it performs. While the functionality of the Kill A Watt works quite well, I am a stickler for data, and this device didn't provide exactly the data I desired, nor expected. The most useful data obtained, in my opinion, was via the cost/time feature, which tells you how much an appliance costs to run per year, month, week, or day; the device has an input for your electricity rate, at $/kwh. It does not, however, tell you the average energy usage in general. It does show the time used to calculate the cost over time, and I know it is only a matter of a simple calculation to determine on my own, but I still believe having kwh/time would be handy to have at a glance. Another minor drawback is the input for your electricity rate. My electric company breaks down my electricity rate to a precision of one ten thousandth of a cent ($ 0.000001), but the rate input only allows to the tenth of a cent($0.001). I know many people don't need or want precision of this intensity, but again, I am a stickler for data. Overall, these few minor drawbacks, in relation to the price I paid (via Amazon), caused me to drop the rating to four stars as opposed to five. It is definitely a good product, and I'm sure it will pay for itself in the long run. It is not, however perfect. ... show more
Reviewed in the United States on January 31, 2012 by A. Foster
Working fine as expected.
Pattern Name: Monitor
UPDATE(12-17-15): I thought I lost this, but I finally found it again. I attached it to a printer and forgot about it for many many many months. I definitely got a good data sample from the printer. This things still works fine even after being connected all that time. UPDATE(02-03-14): Still working - the energy savings ($$$) gained from habit/device changes based on the information the Kill-A-Watt Monitor provides has already covered the cost of buying it. In fact, several+ times over! As mentioned in the original review, this Kill-A-Watt Monitor model retains the statistics when it does not have power. Devices that don't use power when turned off will, of course, not power the Kill-A-Watt Monitor and not record any new data. Subsequently, when the device is turned on the monitoring resumes where it left off and the statistics reflect the "always on" energy usage (for the length of time indicated in the meter). When the monitor is connected to a device that uses power when it's turned off (vampire loads such as TVs, microwaves, paper shredders, etc) the statistics will continuously accumulate and will basically be a weighted combination of the energy used when the device is on AND off. Yes, I know this is obvious, but, it's a subtle but important point to recognize. To illustrate this subtlety, think about a microwave oven, a likely vampire device. Microwaves are not used 24 hrs/day (I hope not). If you monitor a microwave only when it's warming/cooking something (the oven is unplugged after each use) the $/year will be very high. This would not reflect the true operating cost because the monitor does not take into account when the oven is plugged in but turned off. But, if you monitor your microwave when it's plugged in all the time (it usually is), the $/year will slowly lower to a more correct value the longer you monitor it. This really shows your usage "habits" and not the always on cost. If saving some $ is your goal, the Kill-A-Watt Monitor saves you NOTHING by using it. YOU have to change your habits on how you use your electrical devices (or don't use lol) to realize the savings. You don't need to have one of these monitors to do that. However, it will certainly tell you where to focus your efforts by revealing the high energy loads you use. You may be surprised on the power usage of some devices too (good and bad surprises :-) ). If it takes buying a device such as this one to help inspire one to change habits/devices, then so be it. If your goal is basically to inspect the specifications of electrical devices (volts/amps/VA/W/power factor, frequency) the Kill-A-Watt Monitor works great. Original Review: I borrowed one of these a while ago and it worked well. I liked that this model retains the values when you remove the monitor from the equipment your testing. The money values (hour, day, week, month, year) are convenient enough. Just remember to hold reset to zero the monitor before testing another piece of equipment (the $/kWh rate you enter does NOT change when you press reset which is a good thing. I would hate to enter than every time before monitoring something). It's best to use a small (6" long) extension on the back of the monitor to make it easier to plug into your outlets when other plugs are in the way. Otherwise you'll have to remove all plugs in the outlet as the Kill-A-Watt will cover the other sockets. ... show more
Reviewed in the United States on December 6, 2013 by PH
Everyone should own one of these
Pattern Name: Monitor
The P3 P4460 is one of those things that you never knew you needed until you have one. I was amazed at how much electricity some of my appliances used (space heater, 1500 watts!). I'm finding myself plugging most of my appliances and electronics devices in for a few days and seeing how much they are costing me per day/week/month/year. Definitely an eye opener. I will be saving more money in electricity in one year than this monitor costs due to my changed habits. When you see that a certain lamp costs $15 (or whatever) in electricity per year for every hour it's in use every day, it makes it much easier to remember to turn it off when not in use. This adds up fast. Positive: * Easy to use once you've read the manual. * Can keep a running total of electricity used even after it's unplugged. It's sister product, the P4400, cannot do this. * Does the math for you (cost per day/week/month/year) once you enter in how much you're paying for electricity per KW/H. Negative: * You must read the manual to understand how to use this to it's full potential. The interface is NOT intuitive. * Must be plugged in in order to read the display. * The display is not lit, so reading this under a desk or behind a cabinet can be a little awkward. Other: Max 1800 watts of power can be monitored. I knew this ahead of time, but it would have been nice to be able to monitor my refrigerator or clothes dryer. I can't say this is a negative, however, because this limitation is documented and is quite reasonable. Final thoughts: Buy this. You will save more in one year than this costs once you realize how much money you're throwing down the drain with appliances (lights, stereo, TV, whatever) that you keep on for no good reason. Note: The first one I received has a display problem; some of the LED bars didn't work and made the display unusable. A replacement was promptly shipped from Amazon and the replacement works perfectly. No company can make sure 100% of their products work out of the box and this problem was resolved quickly, so I didn't knock off any stars for this problem. The quality of this monitor seems good. ... show more
Reviewed in the United States on November 9, 2010 by Andrew
Still working great going on 6 years later! (see updates)
Pattern Name: Monitor
This works great. I was under the impression that this took a battery or two so it could keep the readings stored in its' memory when either the power goes out or it is unplugged to be moved to a new location, but it doesn't, it's built-in. The power has gone out twice since this has been plugged in, though very briefly, only like 5 seconds, it still kept the readings in place. My old unit, the P4400, which went defective on me, did not store the readings and all were lost the second the power went out. I have no idea how long the readings will stay in memory if there is an extended power outage or if I have to unplug it and leave it unplugged until it gets plugged into the new location, but I'm about to find out tomorrow when I go out of town and take this with me, it will be unplugged for about 20 hours. Will report back as to if it kept it stored or not. (edited, see below) All in all, it's been about 5 weeks and I really like this unit, it works just fine. UPDATE 1/31/15: I had this unplugged while in travel, it was o/a 24 hours before I plugged it in at my new destination and the previous readings were still stored in it so I know it'll keep the readings for at least that long. If I find out that it keeps them longer than that, I'll again edit this review to include my new findings. UPDATE 9/29/20: I changed my rating from 4 stars to 5 stars because this has been working just fine after all these years and felt it deserved that 5th star. I still wished it had a backlight to it which I believe was the reason for the original 4 stars. I do not keep it all the time plugged in anymore, and haven't for about 3 or 4 years now, so that contributes to it's longevity but I do use it here and there just to find out how many watts and/or amps one particular thing, or a combo of things, actually uses. Just updating this review to note that this still works perfectly fine like it did on day one. It is worth buying as it is a very useful tool to have on hand. If you care about how much electricity you use that is. There are many other positive reasons why you should own one of these so do your research and watch some videos to learn more and then buy one, you'll be glad you did. ... show more
Reviewed in the United States on January 19, 2015 by Lee
Useful, accurate watt meter
Pattern Name: Monitor
I purchased this meter to understand why my electric bill has become so high. I knew that I had lots of devices connected 24/7 that were each using small amounts of electric power, but didn't know whether that was my problem. Also, I have two refrigerators, but one of them is seldom opened. I didn't know if it was a major contributor to my problem. And finally, I have some devices that we use frequently which clearly consume a lot of power, like our television and home theater system, and I didn't know if watching that for several hours a day was causing a problem. The product provided answers to all my questions. What it does The meter plugs into a wall outlet, and then you un-plug the device you want to measure, and instead plug it into the meter. You immediately can see how much power the device is using at that moment in time. When you do this, you have to remember that some devices have a standby mode, where they are consuming some power, but are not consuming as much power as when they are being used. A good example is a TV set. It uses a little power all the time so it can read the "on command" from your remote control. Then, once turned on, the TV consumes a lot more power than in standby. So for many devices, you have to measure the standby power, and then measure the power again once the device is turned on. Almost any power meter can measure these two types of power. However what makes this particular meter so useful is that it can accumulate measurements over time, so you can figure out how much power a device will use, on average, over a cycle of many days. A good example of this is your refrigerator. You can wait until you hear it running and then plug it into the meter and read the power. I did this with the old fridge in our garage and found that it uses 248 watts while running. However, that is not a useful figure because, of course, any refrigerator cycles on and off during the course of the day. What you really need to know is how much power it uses over the course of 24, 48, or 72 hours. With the P4460 Kill A Watt EZ power meter, you can plug in an appliance, walk away, and come back in an hour, day, or week, and read the total amount of power used over that period of time. It is easy to then figure out how much power the appliance will use, on average, during the course of a month, and how much it will cost. To help you with the cost calculation, the meter lets you enter your energy cost in cents per killowatt hour (a figure you'll find on your monthly bill) and it will then tell you how much the appliance will cost per day, week, month, or year. This is pretty neat, although there is one flaw in this approach. The flaw is that PG&E (our electricity provider) has a multi-tier rate system where we pay very little for the first 90 killowatt-hours of electricity, then more for the next 30, even more for the next 60, and even more for everything after that. You'll have to come up with your own math if you want to figure out which rate to use. My solution was to use the most expensive rate because our bill always triggers the top tier (as I expect most people's bills will do if they own a home instead of an apartment). Thus, any new electricity usage will always be charged incrementally at the top rate. What it doesn't do This meter requires that you be able to plug the device into the meter. This means that you have to be able to get at the plug and disconnect it from the wall. By contrast, you can purchase a "clamp on" power meter that only requires that you be able to access a wire that feeds the device, and you then clamp onto that wire, without disconnecting the device, and the meter reads the power by reading the induced magnetic field from the wire. This is a much more elaborate way of measuring power, and these devices cost at least ten times what the P4460 costs. The meter also cannot help you measure anything that is built in. Thus, you can't measure the power used by all the lights in your kitchen (we have a lot of track lights which are quite clearly consuming a lot of power, but I can't measure this with the P4460). The Kill A Watt also cannot measure 240V appliances like your dryer or electric oven. Summary -- Is It Useful? So, having used this meter for a few days, was it worth the cost and is it useful? The answer to both questions is a resounding YES! I was able to find out that the almost ninety devices I have connected to the wall in this house use enough standby electricity (the amount used when connected, but not turned on) to cost me almost $40 per month. Some of the whacko "green" people try to tell me that I should disconnect these devices, but that is not practical. Do I really want to turn off my Internet modem, my router, my wireless access point, my fax machine, my telephone answer machine, my portable phone, etc. and only turn them on at the instant I'm going to use them? I suppose I could, but it would make them far less useful, and would be a total pain in the neck. However, I did find several devices that used a lot more standby power than I would have thought, and which I CAN turn off. A good example is the furnace. During the summer, I don't need to have these connected (I actually have two small furnaces, instead of one large one). I had never bothered to unplug them. However, the P4460 tells me that they are using 13.2 watts of power, all day, all night, every day. I found that at my electricity rates, every 5 watts of 24/7 power costs me $1 per month. Thus, by unplugging the two furnaces I am going to be able to save about $2.25 per month for about four months of the year. So, I have identified appliances that I can disconnect, without greatly affecting my lifestyle, and by doing so, I can save money. I'll certainly pay for this gadget within the first year, just by doing this. I am NOT doing this to "save the planet," because quite frankly what I do -- and even what lots of people like me doing the same thing -- won't make a hill of beans difference (take a look at how much electricity is used to create a pound of aluminum or roll a sheet of steel ...). I am an electrical engineer, and believe me, you don't change things by operating at the margins of the problem. Instead, I'm doing this because it is going to save money on my electricity bill. The cause may not be as noble as the fiction of "saving the planet," but it is far more real and -- this is the whole point -- far more MEASURABLE! ... show more
Reviewed in the United States on July 18, 2011 by John H. Meyer
Handy little volt / amp / watt meter - BUT
Pattern Name: Monitor
This is a handy little gaget for anyone interested in monitoring electric usage on any 120vt a/c appliance. It gives readings in watts, voltamps, amps, volts, kwhours used, and - if you punch in your kwh cost - dollars and cents cost of the usage. It will also give you the Power Factor at any given time for the more scientifically inclined amongst us. I also found it useful to see if and how much of a voltage drop I was getting at an outlet when it was placed under a heavy load. All cumulative units are measured from your last reset, and the time of use reading changes from hours and minutes to days,etc., as the time increment grows larger. I would personally recomend using at least a three foot (Heavy Duty) extension cord between the power outlet and this unit to make it much easier to reach and read the data. The power usage data is stored after unplugging (until you hit 'reset') but the LEDs do not show unless the unit is plugged into an outlet - so, if you don't like the extension, you can unplug it from a floor outlet and replug it into a counter level outlet for easier reading of just the cumulative usage data (i.e. kwh, cost, length of time, etc.); if that is all you are concerned with. BUT - just be aware that after several months of using this meter to monitor electrical usage on an electric heater (1500 watts most of the time, 900 or 600 watts at other times) I discovered that the outlet plug on this meter had, over time, heated up enough to slightly melt and brown the plastic that surrounds the outlet on the meter. The heater plug was carefully kept firmly in the meter outlet, so this phenomenon seems to have not been due to a loose plug. So, I would just recommend judicious use of this meter in "high" household current draw situations. Otherwise, the meter works fine and I would buy it again, I just wouldn't leave it plugged into such a high draw appliance for extended times. ... show more
Reviewed in the United States on December 14, 2009 by kcm
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