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Price: $129.95
(as of Apr 06, 2026 04:47:16 UTC – Details)
B001Q1G4WK,
Product description
USA & CANADA Efergy Elite 4.0 Wireless Portable Home Energy Monitor. No Wi-Fi required. Easy Install. 2 sensors
Key Features
Easy to install and program. No electrician required (but recommended). No Wi-Fi required.No…, 4.5,
Reviewer: Doc
Rating: 5.0 out of 5 stars
Title: WORKS! Solar – YES! Save you money!
Review: Unbelievable product – will pay for itself fast! Will work with solar but have to know limits of monitor and how to install. You must remember the sending units for this monitor work on an electrical principal of magnetic fields. When electricity moves through a wire it produces a magnetic field. BUT only AC current. As the electricity moves back and forth (AC means ‘alternating current’) the magnetic field is generated. If you install the sending unit on a power cord from say a freezer then you have “two” lines of AC current. As the electricity moves back and forth through two lines they cancel each other out. No magnetic field for the sending unit to find. Must install on one line which means finding the line in your breaker box. For DC (DC means ‘direct current’) the electricity moving through the line does not generate a magnetic field thus the monitor will not work on DC. Electricity from solar panels is DC.So how do you use this monitor on solar installations? I have a 7.2 kW grid tied solar array. All grid tied solar arrays have an inverter that changes the DC current to AC current. Find that circuit where it ties to the grid. This is likely near your power meter. Install the monitor sensors at that point. Will provide wattage generated by the solar array.I purchased this monitor after my local power company installed a new meter to track my total power consumption and of course send me bills. For over 3 years I have monitored my power consumption closely to ensure the power from my solar array was accounted for. After the new power company meter, my power consumption tripled. I could not find why. After installing the Efergy Monitor on my solar array circuit I found one third of my array was not working. Trouble shooting the array produced damaged insulation on a wire that shorted out that section of array. Fixed and power produced back to normal. Save big bucks there with the help of the monitor. However power consumption still high.I noticed my old upright freezer working a lot. So I installed monitor on circuit to freezer. This required finding circuit to freezer in the breaker box in house. Turned out freezer was consuming way more power than specifications say. Removed freezer and found damage so replaced. Helped a lot on power. Monitor saved more money.Began to monitor HVAC system. HVAC use 220V so installed both monitor sensors on the circuit to HVAC. This circuit in the same breaker box as freezer. Discovered HVAC using correct wattage when running. Monitored over several days and found HVAC running 15 hours per 24 hour day. This was way too much. Called a HVAC contractor and discovered leak in HVAC coolant system. Covered under warranty. Now HVAC runs maybe 4 hours per 24 hour day. Saved a lot of money this time.So how do you know how long something runs? Install the monitor and when an item like a freezer or HVAC is running write down the wattage from monitor. Do this a dozen or so times. Average your data to get the average wattage when running. At the end of a 24 hour day write down the total wattage used by the item and divide by the average. This will give you the number of hours of run time. I set the clock on my monitor to reset at 7:00 am instead of midnight. Makes it easier to read numbers instead of getting up at midnight.Installation in a breaker box is simple but as many reviewers say, if you are uncomfortable with this get help. I did install mine and replaced the box cover. Sending unit transmits just fine though the metal cover. I used a hand held clamp on multimeter to spot check numbers from the Efergy Monitor. It was always very close. I installed the sensors and monitor over a month ago. No problems with AA batteries.My only complaint is the ‘historical’ data gives total since last reset with is midnight or what ever time you tell it midnight is. Remember I have mine set at 7:00. So if you don’t get your previous day’s data before it resets you will miss that information. The monitor display shows humidity but I don’t believe the numbers. Without some sort of humidity device I think this monitor just estimates humidity from temperature.Summary: This thing works. It is very versatile. Installs easy. Easy to program. If you think through how your circuits are wired can be used to monitor many devises. Monitor is very sensitive – right now showing my HVAC thermostat is using 0.011 watts. I’ve recommended to others have purchased.
Reviewer: TheDadBod
Rating: 4.0 out of 5 stars
Title: Works As Advertised, But Wrong Model
Review: First off, this is the Elite 3.0, not the 2.0 as advertised. There doesn’t seem to be any real difference between the two, but the displays are different. Also, the Elite 3.0 does not give you cost totals (Today, Week, Month), only energy totals. In any case, installation/setup was extremely easy. Just turn the power off at the meter so you don’t kill yourself and read the directions. I will update this review with accuracy and my readings vs. utility company readings over the next few months.I bought this because I suspect that my meter is crossed and/or combined with someone else’s (we own a townhouse). Our energy consumption is consistently 2-to-3 times that of our neighbors despite being moderately energy conscious. We have only CFLs/LEDs in the whole house, rarely run the A/C or heater, etc. Of course, because the power company is almost as corrupt as the Obama White House, it’s my problem to solve, even if they installed the meters wrong. Alas, I dropped $94 on this thing to see what I can find. If my readings are significantly lower than the power company’s, it will be time to get an electrician (and a good lawyer) involved.
Reviewer: JWB
Rating: 5.0 out of 5 stars
Title: Simple controls with powerful configuration options
Review: I always buy my products for full price ($117 in November 2016) and never accept discounted products for reviews. My rating criteria is as follows. If the product works as is advertised and the quality is in line with the price then I give it five stars tentatively, then deduct stars for usability problems, functionality problems, flaws, quality, etc.I really wanted this in order to just measure electricity use of my stove. I have used Kill A Watt devices in the past and they aren’t capable of measuring 220V, so I bought this. What I learned is that although it is possible to measure just the stove, you still have to hook it up at the circuit box, and depending upon how much “slack” there is in your wires this still might not work.With my Bachelor of Arts degree, I surmised that I should just be able to clamp this around the cord. That did not work, which may not surprise those of you who did not major in History. So I went to the circuit box, and–not believing in electricity–was able to be protected from its dangerous forces long enough to clamp this around the wires that send magical electricity to my stove without getting shocked. Each clamp must only enclose a single wire or the god of electricity will reject your offering, and if you touch something without having made the appropriate ritual sacrifices, you may be struck dead so be careful.Once your clamps are in place, you must again invoke the Gods of Wireless technology to pair the display to the transmitter. For me, the pairing process was simple and quick. Each module is powered by batteries–and there is a setting to “refresh” the data at slower intervals, I assume in the interest of saving battery life.The display is crisp and easy to read, and the settings were easy to figure out. Initial quality seems quite high. It has a display of real time use, a weekly average and a monthly average, as well monetary costs and CO2 emissions associated with your electricity usage.I gave this five stars, because it does what it says it will do and does what it is meant to do well, however, it isn’t exactly what I hoped it would be–a way for me to measure electricity usage of my 220 appliances that a Kill A Watt doesn’t work on, but that I am interested in knowing about. For instance, I probably won’t change my life much depending on what I learn about my stove’s electricity use (I still gotta eat), but how much electricity does my hot tub use in December vs. July? Should I turn it off during the coldest parts of winter? This can answer those questions, but its not necessarily what it is made to do and you will need to dig into your breaker box, assume some risk, and hope there is enough room in your wires.My recommendation is that you need to think about what your needs are before you buy this relatively powerful but simple device. I’ve seen other reviews about using this for monitoring electricity in out-buildings, rental units, etc. I think its perfect for that, but if you are using this to charge renters for electricity or otherwise need it to account for true electricity costs, there are a couple things to remember. Despite the simplicity of the controls, electricity delivery and CO2 usage is fairly complex. Your electricity may cost more at different times of the day than others–and this device has a way to account for that–making it much more complex and accurate than a Kill A Watt.Likewise, if you really need to rely upon its CO2 feature, (I could see this being interesting in a classroom, or maybe you charge renters a carbon tax?) you need to understand where your electricity comes from–is it from a coal plant, natural gas, hydro, nuclear, etc..–and once again this device can incorporate those fine tuned details.However, if you are just looking for information, it may be a little expensive to be used as a consumer device just for information’s sake. Its pretty awkward to use it to measure a single circuit like I wanted to, but is possible.In conclusion, it seems to be a good device, but I would swap it for a more simple 200 Kill A Watt if possible.
Reviewer: Federspiel
Rating: 5.0 out of 5 stars
Title:
Review: Einwandfreie Funktion
Reviewer: Pollix
Rating: 5.0 out of 5 stars
Title:
Review: Siccome lavoro nel settore della metrologia elettrica, ho voluto provare quanto fosse precisa la rilevazione della corrente di questo sistema.Ho quindi utilizzato un generatore di corrente campione a diversi valori di corrente (da 0,6 A a 20 A) e ho potuto rilevare che la misura rilevata è leggermente inferiore al valore reale, e che l’errore medio di misura è inferiore al 3% in tutto il range di misura, con l’errore che aumenta nelle misure inferiori ad 1 A (240 W).Siccome viene misurata solo la corrente e poi viene effettuata una moltiplicazione per il valore della tensione (impostato sul misuratore) per ottenere la misura della potenza (W=V * I ) per correggere il valore misurato basta aumentare il valore della tensione impostata (dopo averla prima misurata) del 3%.La tensione di rete nominale in Italia è di 230 V, impostando sul display una tensione di rete di 236 V la misura di potenza risulterà più vicina al valore reale, cosa che ha una certa importanza se si utilizza la funzione di allarme di sovracorrente.Il misuratore effettua una lettura ogni 10 secondi (modificabile a 15 o 20 secondi), quindi è normale che la lettura non si aggiorni immediatamente appena si attiva un dispositivo sulla rete elettrica.La soglia di allarme di sovracorrente può essere impostata ad intervalli di 250 W, e avrei preferito un intervallo di 100 W, ma comunque svolge la sua funzione.L’installazione è velocissima, e non è necessario avere il contatore in casa. Siccome si deve posizionare il sensore solo su un conduttore di alimentazione (che sia fase o neutro, misura lo stesso) potrebbe essere necessario aprire la scatola di derivazione principale, quella con il salvavita dell’appartamento, per poterlo collegare.La portata del trasmettitore copre di sicuro 7-8 metri, non ho fatto prove a distanze superiori.Complessivamente un buon prodotto ad un costo contenuto, non è certamente uno strumento di misura, ma permette di tenere sotto controllo i consumi e di evitare che il limitatore dell’impianto intervenga in caso di superamento dei limiti di potenza, che era quello che stavo cercando.Tenete presente che una pinza amperometrica fatta bene costa oltre 200 euro, quindi le aspettative devono essere sempre correlate a quanto si sta spendendo.
Reviewer: Roland Wedebrand
Rating: 1.0 out of 5 stars
Title:
Review: Jag har beställt en EU version tre fas men jag har bara fått en minisensor jag behöver två till för att leveransen ska bli fullständig
Reviewer: Rv
Rating: 5.0 out of 5 stars
Title:
Review: J’ai deux appareils l’un contrôle la pompe a chaleur l’autre les plaques a induction. Le fait d’être directement dans la cuisine permet de ne pas disjoncter par grand froid.
Reviewer: Mr Bojangles
Rating: 5.0 out of 5 stars
Title:
Review: Pretty good product. Still working a year later which is better than my last one.
, Tools & Home Improvement > Electrical > Breakers, Load Centers & Fuses > Accessories > Meter Sockets, #Efergy #Elite #Classic #Wireless #Electricity #Monitor,
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