dealsp3 kill a watt p4400 electricity load meter and…


I have one of these.
Why you ask?
Part of our energy audit is checking how much power those always-on, always attached devices draw. It allows monitoring instantaneous power plus it shows accumulated power for better analysis of intermittent use.

I found out my refrigerator was costing about $175 per year. We replaced the old model with a new mode and save about $68 a year. Considering energy costs are rising I figure my payback less than 6 yrs.

Same with the old TV. I was appalled to see that the old 32" cost about $0.45 per day. Does not seem like much until you multiply it by 365. It equaled $150. The new LCD big screen uses half the power, which helps justify it. ;-)

And the lower energy use means less heat build up, lowering cooling costs.
So the meter is a cool tool.


I'm in that's a great idea.. THANKS!!
Two questions,
How did you use yours, plug it in for a solid day on each outlet or what?
And did you get multiples or is one fine?


@redialbutton: I use one the same way. I moved mine from place to place a week at a time as weekends have different usage schedules. I now power off my pc every night. I also justified a flat tv and monitors in my house. (I am not too confident as at work I have seen many flat displays go bad in a year.


Just ordered it, I was looking for something like this! Thanks for saving me the bucks!

With any luck, I'll figure out why we are spending $300 a month on electricity when I'm never home. :)


@caffeine_dude: If you're like me and tend to leave work unfinished overnight and don't want to completely shut down your computer, you can always just use Hibernate. After you turn your PC back on, you're right where you were before you hibernated, but without using any power overnight.


@redialbutton: you asked, "How did you use yours, plug it in for a solid day on each outlet or what? And did you get multiples or is one fine?"

I have one meter, but use it several ways. Look at the pictures and info at It shows both instant and cumulative values by pressing the function buttons.

I IDed the likely power hogs like refrigerator & entertainment center. For the fridge, I just plugged it in and left it for a few days. The P3 shows total KW*Hrs and the elapsed time. It's easy to calculate hourly or daily average from that.

The entertainment center had 5 pieces. I plugged the common UPS into the P3 & monitored total use of everything for 5 days. I calculated an average use. Then I plugged in just the TV into the P3 and found its average. It was about 80% of the total. The DISH receiver was 10% & the speaker amp was the other 10%. Next step was easy.

BTW computers are my other big power waster.


These things often need a short extension cord or 'pigtail' to monitor appliances with tight clearances in the outlet area, or devices plugged into an outlet strip. Not a big expense, but a PITA if you aren't prepared.


+tax in CA makes it $18.18, I've been wanting one of these for awhile. Now to see where the vampires are...


These are quite useful -- ordered two. The Newegg website is a PITA! It kept telling me I had used an invalid password ... I had to login a total of four or five times to complete the order.