Refoss EM16P
#2 in Circuit-levelFull review
The pick for Home Assistant users who want circuit data without a cloud account.
Amazon $199.99$199.99
The Refoss EM16P is the better home energy monitor overall, rated 4.1 to 2.9. The Refoss EM16P leads on local control, accuracy and warranty.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Emporia Vue 3 (16 sensors)
#7 in Circuit-levelFull review
The most common panel-wide monitor for a home with a typical 200A split-phase service. Pick it if you want per-circuit data and are fine with a cloud app.
Amazon $199.99$199.99
Which should you buy?
- Choose the Refoss EM16P for local control (local API, MQTT or hub, Home Assistant, works without the cloud vs cloud app only), accuracy (claimed within ±1% vs claimed within ±2%) and warranty (2-year warranty vs 1-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every circuit-level home energy monitor; a clear win is highlighted. How we rank explains each one.
| Factor weight | Refoss EM16P | Emporia Vue 3 (16 sensors) |
|---|---|---|
| Overall rating | 4.1/5 | 2.9/5 |
| Value 25% | 32 $199.99 | 32 $199.99 |
| Circuits 20% | 100 16 branch circuits | 100 16 branch circuits |
| Local control 20% | 100 local API, MQTT or hub, Home Assistant, works without the cloud | 0 cloud app only |
| Accuracy 15% | 100 claimed within ±1% | 50 claimed within ±2% |
| Subscription 10% | 100 no subscription | 50 subscription terms not published (neutral score used) |
| Warranty 10% | 25 2-year warranty | 0 1-year warranty |
Specifications
| Refoss EM16P | Emporia Vue 3 (16 sensors) | |
|---|---|---|
| Monitoring | ||
| Branch circuits included | 16 | 16 |
| Most circuits supported | 16 | 16 |
| Mains CT rating | 200 A | 200 A |
| Branch CT rating | 60 A | 50 A |
| Electrical systems | Split-phase, 3-phase | Split-phase, 3-phase |
| Solar / net metering | Yes | Yes |
| Claimed accuracy | ±1% | ±2% |
| Connectivity | ||
| Connection | Wi-Fi | 2.4 GHz Wi-Fi |
| Local API / MQTT / hub | Yes | No |
| Home Assistant | Yes | - |
| Needs maker cloud | No | Yes |
| Free of subscription | Yes | - |
| Build | ||
| Warranty | 2 years | 1 year |