Short answer: Monitoring a heat pump and an immersion heater separately only helps if each load has an accessible conductor that can be assigned to its own channel. This product is supplied with two 80 A CTs and documents AC 100-240 V operation with a 0.2-80 A range. That makes it relevant for a two-load comparison, but it does not prove that a particular home's wiring presents those points clearly or safely. Use the readings to guide questions, not to diagnose the heating system. WiFi bi-directional 2-channel energy meter with dual 80 A CTs is the documented product used for this comparison.
Assign one named channel to each load
Monitoring a heat pump and an immersion heater separately only helps if each load has an accessible conductor that can be assigned to its own channel. This product is supplied with two 80 A CTs and documents AC 100-240 V operation with a 0.2-80 A range. That makes it relevant for a two-load comparison, but it does not prove that a particular home's wiring presents those points clearly or safely. Use the readings to guide questions, not to diagnose the heating system. Monitoring a heat pump and an immersion heater separately only helps if each load has an accessible conductor that can be assigned to its own channel. This product is supplied with two 80 A CTs and documents AC 100-240 V operation with a 0.2-80 A range. That makes it relevant for a two-load comparison, but it does not prove that a particular home's wiring presents those points clearly or safely. Use the readings to guide questions, not to diagnose the heating system.
Check the two-CT kit and current range
| Load | Suggested label | What the meter can show |
|---|---|---|
| Heat pump | Channel A | Electrical current at the monitored point |
| Immersion heater | Channel B | Electrical current at the monitored point |
| Whole-home context | Separate record | A comparison reference, not a third channel |
Avoid confusing electrical use with heat output
- Confirm whether the heat pump and immersion circuits are separately identifiable.
- Get competent installation advice before touching fixed wiring.
- Check the dual-CT model and range.
- Keep a dated log of which channel belongs to which load.
Treat installation as specialist work
The listing does not specify immersion-heater wattage, heat-pump output, COP, tariff savings, temperature sensors or an appliance fault diagnosis. Do not promise that monitoring alone will lower a bill.
Compare the two heating loads honestly
This product fits a two-load monitoring plan when the installation points are safe and the limits are accepted. For related context, see Heat Pump Electricity Monitor with Two Clamps in the UK. For related context, see Heat Pump Energy Monitor with Two Clamps: UK Setup Checks. 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.