Short answer: If a heat-pump bill looks unexpectedly high, the first useful question is often which circuit is contributing what share. A two-clamp monitor is relevant when two separate conductors can be reached and labelled. This product is documented with dual 80 A CTs, AC 100-240 V input and a 0.2-80 A measuring range, with Tuya-compatible WiFi. Those details support a comparison workflow, not a promise of savings or a diagnosis of the heat pump. WiFi bi-directional 2-channel energy meter with dual 80 A CTs is the documented product used for this comparison.
Start with circuit identification, not an app graph
If a heat-pump bill looks unexpectedly high, the first useful question is often which circuit is contributing what share. A two-clamp monitor is relevant when two separate conductors can be reached and labelled. This product is documented with dual 80 A CTs, AC 100-240 V input and a 0.2-80 A measuring range, with Tuya-compatible WiFi. Those details support a comparison workflow, not a promise of savings or a diagnosis of the heat pump. If a heat-pump bill looks unexpectedly high, the first useful question is often which circuit is contributing what share. A two-clamp monitor is relevant when two separate conductors can be reached and labelled. This product is documented with dual 80 A CTs, AC 100-240 V input and a 0.2-80 A measuring range, with Tuya-compatible WiFi. Those details support a comparison workflow, not a promise of savings or a diagnosis of the heat pump.
Check the dual-CT electrical envelope
| Before purchase | Why it matters | Evidence to keep |
|---|---|---|
| Circuit name | Prevents mixed readings | A written Channel A/B plan |
| Current envelope | Avoids an obvious range mismatch | 0.2-80 A and AC 100-240 V marking |
| Data route | Sets expectations for access | Tuya-compatible WiFi wording |
Use readings as evidence for the next investigation
- Photograph or document the intended measurement points without opening live equipment.
- Ask a competent person to confirm the installation route.
- Compare the product markings with the order details.
- Keep a short dated record of circuit labels and readings.
Installation remains a competence boundary
The product data does not specify heat-pump COP, running cost, tariff compatibility, weather compensation or a guaranteed app history. Avoid turning one graph into an appliance verdict.
Turn a high bill into a measurable question
The dual-CT meter is most useful when you know which two circuits you want to compare and can arrange safe installation. For related context, see Heat Pump Energy Monitor with Two Clamps: UK Setup Checks. For related context, see WiFi Dual-CT Energy Meter UK: What to Check Before Buying. The documented next step is the WiFi bi-directional 2-channel energy meter with dual 80 A CTs.
Sources and safety context
Use competent electrical help for work inside a consumer unit or on fixed wiring. HSE: Electricity at work.