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Kill A Watt™ Appliance Efficiency Monitor

Model:

P4400

 | Catalog #: 55026789
Price:
$25.99
$25.99
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4

  • Built-in battery backup so you don't need to restart after a power outage
  • Accurate within 98% so you will know the real electricity cost of an appliance
  • Calculates cost and forecasts by week, month and year
  • Has a big, easy-to-read LCD display
  • Display readings such as Volts, Current, Watts, Frequency, Power Factor and VA

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Availability:

ONLINE In stock
Usually ships in 1 - 2 business days


Go to Product Detail Page
Product Summary

Take the cure for runaway electric bills.

Know "Watts" killing you. Connect any appliance to the P3 P4400 Kill A Watt and assess how efficiently that appliance operates. Count consumption by the kilowatt-hour and calculate your electrical expenses by the day, week, month even an entire year.

  • Large easy-to-read LCD display
  • Cumulative kilowatt-hour monitor, just like the electric company uses
  • Check the quality of your power by monitoring voltage, line frequency and power factor
  • Calculate your electrical expenses by the day, week, month, even an entire year

You'll also need

  • Appliance whose efficiency you wish to monitor
Pricing and availability: Please note that all prices are subject to change without prior notice. Prices advertised on this site are for online orders only. Prices on some items may differ from those advertised in RadioShack stores. All merchandise may not be available at all stores, and all stores may not participate in all sales promotions. We recommend you contact the store to confirm product availability and price.

What's in the box

  • P3 P4400 KILL-A-Watt™
 

Shipping

Usually ships in 1 - 2 business days

What shipping method is right for me?

Other ways to get it


By phone: 1-800-843-7422

Manufacturer Warranty

  • Parts: 6 month
  • Labor: 6 month
Tech Specs
Product Support

Product support (1 matches)

Date added Document
February 21, 2008 Kill A Watt? Appliance Efficiency Monitor (User's Guide)

Some of our documents are available in PDF, and to view them you'll need Adobe Acrobat. If you don't already have it, you can download Adobe Acrobat Reader for free.

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Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
P3Kill A Watt™ Appliance Efficiency Monitor
 
4.7

(based on 15 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Reliable (7)
  • Versatile (6)

Cons

    Best Uses

        • Reviewer Profile:
        • Casual user (5), Enthusiast (3), Power user (3)
        • Primary use:
        • Personal (13)

      Reviewed by 15 customers

      Sort by

      Displaying reviews 1-10

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      Previous | Next »

       
      5.0

      Well designed, easy to use, potential mo

      By Chuck

      from The Villages, FL

      About Me Avid Do-It-Yourselfer

      Verified Buyer

      Pros

      • Durable
      • Easy to Use
      • Well Designed

      Cons

        Best Uses

        • Gifts

        Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

        Learn what things realy cost in term of electricity

        (6 of 6 customers found this review helpful)

         
        4.0

        Works well and fun to use

        By WastedWatts

        from Little Rock, AR

        Verified Buyer

        Pros

        • Attractive Design

        Cons

          Best Uses

            Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

            This is a great device and we used it for my son's science project. My only complaint is that the readout only measures to the hundredths place meaning two decimal places. This only matters if you are measuring stuff that burns very little power like we were for our phantom power wasting project. We were still able to do our test we just had to leave the device plugged in long enough to burn 1 100th of a KWh which won't be an issue for most users. Great product and my son and I have had fun using it for testing.

            • Primary use:
            • Personal

            (6 of 7 customers found this review helpful)

             
            4.0

            Love It

            By Jeff

            from Queen Creek, AZ

            About Me Casual User

            Verified Buyer

            Pros

            • Consistent Performance
            • Rugged

            Cons

              Best Uses

              • Home use

              Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

              I am spending about $10 a day for electricity so finding out where all that money is going is important to me. I run the unit for about a week at a time on various devices and so far have identified where 10% of it is going. I can't believe that my Enternatinment center costs about $140 a year. I don't think I'll be able to reduce using it though because I love TV too much.So far, the next biggest user I've found is the refrigerator, coming in at $99 a year. And surprisingly to me, I have a floor fan that is costing me $70 a year to operate 7 hours a day (during the peak heat of the day). I might be looking for a more efficient model. I am on a "Time-of-use" plan where electricity costs more during peak use (middle of day in the summer). So now I am trying to figure out exactly what I will save by running devices like the washing machine, dishwasher, etc only during off-peak hours.I wish there was a way to hook it up to 220 volt devices like the dryer.I am asking for a second unit for Father's day so I can check more devices at once. It's going on the fridge outside in the barbecue that is rarely used.

              • Primary use:
              • Personal

              (7 of 7 customers found this review helpful)

               
              4.0

              Great

              By B-R-U-C-E

              from Princeton, NJ

              About Me Power User

              Verified Reviewer

              Pros

              • Consistent Performance
              • Versatile

              Cons

                Best Uses

                  Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

                  This is a great device for monitoring your energy usage. I used it to justify purchasing a new refrigerator (looks like the new fridge will pay for itself in about 4 years - not bad).
                  The only drawback I have with this unit is that it resets on a power outage, so if you have been monitoring for a while and haven't written any readings down, you will loose it all during an outage of more than a few seconds.

                  • Primary use:
                  • Personal

                  (5 of 5 customers found this review helpful)

                   
                  5.0

                  An excellent piece of equipment.

                  By howdy

                  from Central Illinois

                  Verified Buyer

                  Pros

                  • Accurate power monitoring

                  Cons

                    Best Uses

                    • Versitile from 1 to 1500

                    Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

                    The Kill a Watt appliance monitor is exactly what I have been looking for. For example I was able to compare the power consumption of our TV sets when they are off. One uses .5 watt, the other 5 watts. I now know which to unplug when we are not using it. I can also monitor equipment that cycles like our dehumidifier.[...] Every home needs one!

                    • Primary use:
                    • Personal

                    (2 of 2 customers found this review helpful)

                     
                    5.0

                    Great "phantom power" finder!

                    By Green Smart CEO

                    from Commerce Twp, MI

                    About Me Enthusiast

                    Verified Buyer

                    Pros

                    • Consistent Performance

                    Cons

                    • None so far

                    Best Uses

                    • Home use

                    Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

                    Connect to "shut off" devices and see the useless hidden power losses. Suprising for sure!

                    • Primary use:
                    • Personal

                    (3 of 3 customers found this review helpful)

                     
                    5.0

                    A must have product

                    By Dave

                    from USA

                    About Me Power User

                    Pros

                    • Consistent Performance
                    • Versatile

                    Cons

                      Best Uses

                      • High-End Equipment

                      Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

                      This is a must have product for those who are serious about controling unnessesary electrical energy consumption. Works great and is easy to use. I only wish they made a 220V version for testing larger appliances.

                      • Primary use:
                      • Personal

                      (4 of 4 customers found this review helpful)

                       
                      5.0

                      Very pleased

                      By Doug

                      from New Hampshire

                      About Me Casual User

                      Verified Buyer

                      Pros

                        Cons

                          Best Uses

                            Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

                            [...], it worked right out of the box, and it is doing exactly what I expected it to do. I'm very happy with an affordable, well designed product.

                            • Primary use:
                            • Personal

                            (7 of 7 customers found this review helpful)

                             
                            5.0

                            nice

                            By KP

                            from Middletown, USA

                            About Me Casual User

                            Verified Buyer

                            Pros

                            • Pretty accurate
                            • Useful

                            Cons

                              Best Uses

                                Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

                                Can't complain. It does as advertised. I've plugged in lots of stuff into it. I like that it measure total KWH over an extended period of time.

                                Oh, and it's pretty inexpensive, too, that doesn't hurt. ;)

                                • Primary use:
                                • Personal

                                (10 of 10 customers found this review helpful)

                                 
                                5.0

                                Energy myth buster

                                By Bogie

                                from Minnesota

                                About Me Enthusiast

                                Verified Buyer

                                Pros

                                • Consmr Reports tested
                                • Measures true energy use
                                • Very Accurate
                                • Very easy to use

                                Cons

                                • Hard to read in low light
                                • Viewing angle critical

                                Best Uses

                                • Determine energy waste
                                • Pull plug or not

                                Comments about P3 Kill A Watt™ Appliance Efficiency Monitor:

                                I was able to determine:
                                If I should pull the plugs on some equipment instead of just shutting it off and letting the little LED's stay lit.
                                DirectTV tuner wastes a lot of energy in standby.
                                Cell phone chargers left plugged in use almost no energy.

                                • Primary use:
                                • Personal

                                Displaying reviews 1-10

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