ᐅ New Construction – Energy Consumption of the Heat Pump / Electric Auxiliary Heater
Created on: 8 Nov 2018 19:08
J
Jan Latta
We built a solid single-family house with a heat pump. We moved in on September 1 of this year. I am quite concerned about our heat pump, as it has consumed 1500 kWh in just two months. Today the consumption has increased by nearly another 200 kWh. September and October were unusually mild, with only two days experiencing frost on the ground. Both the heating technician and the construction company consider this usage reasonable, so I have not discussed it with them again.
I researched how these heat pumps operate and took a closer look at the energy consumption of my unit (see photo). I found that the highest consumption is attributed to the electric auxiliary heater—1288 kWh.
What do you think about this? Could there be something wrong with the settings? Is the compressor not working efficiently? Shouldn’t the auxiliary heater only activate at significantly lower temperatures?
The heat pump is an air-to-water Logatherm WPLS 8kW from the company Buderus.
Thank you for your opinions.
I researched how these heat pumps operate and took a closer look at the energy consumption of my unit (see photo). I found that the highest consumption is attributed to the electric auxiliary heater—1288 kWh.
What do you think about this? Could there be something wrong with the settings? Is the compressor not working efficiently? Shouldn’t the auxiliary heater only activate at significantly lower temperatures?
The heat pump is an air-to-water Logatherm WPLS 8kW from the company Buderus.
Thank you for your opinions.
boxandroof schrieb:
Yes, you're right, I thought it was a current modulating heat pump from Buderus. It probably is. But for example, the 2 entries in the consumption database are at 3, or even below. So it seems like getting a good COP with this system is not straightforward.B
bierkuh8312 Jan 2019 08:16Please send the correspondence regarding your complaint to the "Fachverband Sanitär Heizung Klima Bayern" (Association for Sanitary, Heating, and Air Conditioning Bavaria). Perhaps your heating installer is a member, and something might be done about it?! There can be no damage.