10 Best Kill A Watt Meters 2025 in the United States

The Upgraded Watt Power Meter Plug by MECHEER is a solid tool for monitoring and managing home electrical usage. It offers various monitoring parameters, including power, energy, volts, amps, and more, which makes it suitable for tracking the consumption of different appliances. The device features an upgraded LCD display with a large screen and adjustable backlight time, ensuring clear visibility under various lighting conditions. The backlight can be set to stay on from 10 minutes to always on, which is convenient for extended monitoring sessions.

One standout feature is its overload protection, which warns users when the appliance exceeds a set power limit, thus preventing potential damage. Additionally, the data memory function retains your consumption data even after the meter is unplugged, which is handy for long-term monitoring without losing any records. However, the product lacks connectivity options like Wi-Fi or Bluetooth, which means you cannot remotely monitor or control the data via a smartphone app. This may be a downside for users looking for more advanced features in a smart home setup.

The ease of use is relatively high, with straightforward buttons and clear instructions, but the initial setup to adjust settings like backlight time and overload protection might require some patience. This power meter is ideal for those who want a reliable and easy-to-read device for basic electricity monitoring without the need for advanced connectivity features.

The Kill A Watt Connect P4498 is a practical electricity usage monitor designed to help users understand their power consumption. Its most notable feature is the 35-inch cord, which allows for flexible placement of the plug while keeping the display easily accessible. This can be particularly useful in hard-to-reach areas, ensuring you can always view your power usage data without hassle. The meter shows a variety of measurements including volts, current, watts, frequency, power factor, and VA, making it comprehensive for detailed energy tracking.

It also converts usage into cost over different time periods which is useful for budgeting and efficiency improvements. Despite power interruptions, it retains measurements in memory, which is a beneficial feature to ensure data consistency. With an accuracy of +/-0.3%, it provides reliable readings, crucial for precise power consumption tracking. The display is clear and user-friendly, making it simple to operate for those who may not be tech-savvy.

However, the meter lacks advanced data logging and connectivity features, which might be a drawback for users looking to integrate their energy usage data with other smart devices or platforms. At a weight of 4.8 ounces and compact dimensions, the P4498 is portable and easy to handle. Additionally, its polycarbonate material gives it a sturdy build, ensuring durability. The product is ideal for everyday consumers looking for a straightforward, effective way to monitor their household or office energy consumption without needing complex devices.

The SURAIELEC Watt Meter is a useful tool for monitoring and reducing your energy costs. It's capable of tracking energy usage in real time and automatically calculates the cost based on your electricity rates. This is particularly beneficial for identifying high-energy appliances and making informed decisions to save on your power bill. The large backlit display is a standout feature, making it easy to read the measurements even in low-light conditions. This is convenient for use in basements, garages, or during nighttime hours.

The device also includes a 90-day data memory, which is helpful in maintaining usage records even during power outages, thanks to its built-in battery backup. Overload protection adds an extra layer of safety, especially for high-energy appliances like TVs and AC units. The compact design ensures it doesn't block adjacent outlets, which is great for maintaining usability of nearby plugs. Its professional-grade accuracy, certified with ±0.1W precision, ensures reliable readings for devices up to 1,950W.

However, it does lack advanced connectivity features such as Wi-Fi or Bluetooth, which might limit remote monitoring or integration with smart home systems. Additionally, while it logs data for up to 9,999 days, it may not offer advanced data analytics that some users might find useful. The requirement of three A batteries might be seen as a minor inconvenience. The SURAIELEC Watt Meter is a practical choice for those needing a straightforward, accurate, and easy-to-read energy monitoring device.