ᐅ Heat Pump Energy Consumption in 2019 on a Monthly Basis

The linked system is obviously designed in a nonsensical way. One should look for the follow-up in the pink forum.

Heat meters are usually integrated; otherwise, they can be retrofitted. Otherwise, you won’t be able to calculate your annual performance factor.

After the first year, just under 1700 kWh (in January I optimized the settings)

Standard Energy Saving Ordinance 2016 building with 136 sqm (1463 sq ft) of living space in Leipzig, 4 people, controlled ventilation system, ground source heat pump with deep borehole.

Target temperature 22°C (72°F), heat recovery ventilators are off. Bathtub is used more often. I am satisfied.

Bookstar schrieb:

Summer warm water consumption per month 170 kWh

This actually points to a possible incorrect heating system setting. We used this much from June to September, and we are definitely not energy-conscious.

Yes, that's probably true. Even with an instantaneous water heater without a heat pump, we would use significantly less energy. It is likely due to the circulation system, possibly high standby consumption/possibly continuously running pumps, and storage losses, combined with a low coefficient of performance because of high temperatures.

Lumpi_LE schrieb:

That actually sounds like a wrong heating system setting. We used that much from June to September, and we are definitely not economical.

What are your domestic hot water settings?
I also see potential for improvement on my side. I rarely get below 80 kWh for hot water. The coefficient of performance (COP) is also low, around 2.4 despite a ground source heat pump during the summer months.
I’m thinking about the circulation system, rain shower, and long-running pumps. Some are manually set to 100%, which I still need to research.

Nothing special, between 11 a.m. and 7 p.m., hot water is allowed up to 48°C (118°F), and it charges again at 5 a.m. if needed (which happens quite rarely).
I made a few specific settings for the hot water, but I don’t remember exactly what they were... like at which temperature it should start charging, how long, and how long the pause between charges should be, etc. From June to September, my seasonal performance factor (SPF) for hot water was about 4.1. However, I assume it’s normal that an air-to-water heat pump produces hot water more efficiently in summer than a brine-to-water heat pump.
If I include the photovoltaic system, I only used about 5-10 kWh of electricity for hot water during those four months.