ᐅ Heating system realistically, any experiences?

Hello,

I have received a quote for our heating and ventilation system and wanted to ask for your opinions.

We plan to build a single-family house with about 145 m² (1,560 sq ft) of living space, meeting the KfW 70 energy efficiency standard. For the heating system, a ground-source heat pump “Buderus WPS 9 K” is to be installed. I imagined maintaining a constant temperature of 22°C (72°F) in all living areas and 24°C (75°F) in the bathrooms. For this reason, I would like to omit the room controllers and the buffer tank.

For ventilation, a “Tecalor TVZ 270” unit is planned, which is to be operated using a ground collector loop with antifreeze.

What do you think of this setup, and are my heating expectations realistic? Perhaps someone has experience with these systems.

Thanks in advance.

P.S.: There will also be a fireplace in the house.

Hello,

OSL_Twin schrieb:
...The heating system is planned to be a brine-to-water heat pump “Buderus WPS 9 K.” I was imagining heating would maintain a constant temperature of 22°C (72°F) in all living areas and 24°C (75°F) in the bathrooms. Therefore, I would omit the room controllers and the buffer tank.

Whether this brine heat pump is suitable and appropriate for the building project can only be determined after necessary calculations have been carried out, such as the heating load according to DIN 12831, room heat loads, actual energy demand for heating and hot water preparation, etc. For brine heat pumps, a buffer tank for heating is generally not required – but not in every case 😉 According to the Energy Saving Ordinance (EnEV), a buffer tank can only be omitted upon application, as it is mandatory! Heat pumps rely heavily on their heat source, so the sizing and calculation of this must be given the highest attention. Overall, high seasonal performance factors (> 4.5) can only be achieved with precise design and calculation of the entire system (thermal, hydraulic)! There may possibly be better manufacturers (price/performance).

OSL_Twin schrieb:
Maybe someone has some experience with these systems.

Experience could be helpful at best regarding operation, control, and comfort, while all other statements are project-specific and not transferable.

Kind regards