ᐅ Energy Performance Certificate for Heat Pump?

Hello everyone,

how is an energy performance certificate for a house with a heat pump prepared? I see two issues here:

• How is the electricity consumption of the heat pump determined if it does not have its own electricity meter?
• A flat-rate deduction of 20 kWh/m²a (6.3 Btu/ft² per year) for domestic hot water production: negative values could easily result from this, especially with low hot water use combined with low heating demand. But even positive values are likely to be generally too low. How is this issue addressed?

Thanks and best regards from
Proeter

Modern heat pumps have an integrated electricity meter that can even display consumption depending on the "medium." In other words, it can separate hot water and heating usage. Unfortunately, I cannot say if all heat pumps have this feature or from which production years it became available.

Thank you for the initial response. In this specific case, neither is available. The panel only shows the operating hours since commissioning and the total volume of hot water produced (without temperature information). The pump dates from 2007.

I can imagine that it wasn’t possible back then. Unfortunately, I cannot provide any input on such old equipment.

Proeter schrieb:

How is the electricity consumption of the heat pump determined if it does not have its own electricity meter?

It isn't. In that case, you cannot have an energy performance certificate issued.

DeepRed schrieb:

Modern heat pumps have an integrated electricity meter, which can even show consumption depending on the "medium." In other words, hot water and heating separately.

However, this is often more of an estimate than an exact measurement. The pump itself is often not included. Current consumption of 0.44 kWh is rounded down to 0.40 or up to 0.50 at 0.46 kWh. This kind of thing can easily happen, so the energy certificate (as is often the case) is not really worth the paper it’s printed on.

jens.knoedel schrieb:

Not at all. Then you cannot have an energy performance certificate issued.

Wow. That’s quite a statement. By the way, I see countless property listings showing a heat pump and an energy performance certificate. Is it common for heat pumps to have a separate electricity meter?