As a rule, the indoor and outdoor units are wired so that both run through the meter.
However, I have often seen that the heating element was not running through the meter. This then improves the annual performance factor.
And how do I find out how it might be with us?
Hello.
With integrated electricity meters, the question always arises what it counts and how it counts. There are some devices where only the compressor’s power consumption is calculated (estimated) from the available measurement data. This also affects the performance factor and can significantly improve it. The heating element should only come on at extremely low temperatures, if at all.
Regards
The heating element should not have run yet, except for testing upon delivery. And supposedly the heat pump can operate down to -25°C.
The set bivalence point should be visible in the settings.
Split heat pumps cannot go that far into low temperatures. However, the limit temperature of the heat pump should also be specified.
Both values are needed for the calculation, even if the exact SCOP values from the heat pump manufacturer are not used.
The value pairs are often only shown in diagrams and not stated, so many building automation planners calculate with worse standard values.
See above.
As mentioned, no hot water has been produced yet. So far, we have a calculated COP of 5. Which isn’t so bad, right? With hot water production it probably goes down.
Our electricity meter shows 513 kWh consumption for the same period. The work lamps, radio, saws for parquet cutting were running, cooking has already been done, the kitchen has been there since 8.2., and there was food for the helpers on the weekend.
Whether 110 kWh were burned up now... maybe that’s about right.