Hello everyone,
We were incredibly lucky to purchase a great end-terrace house (heritage protection only on the exterior) in a fantastic neighborhood.
Built in 1915, but the structure is in excellent condition since it was built before the war.
No moisture in the basement, and the roof is dry.
Heating was provided by gas individual heaters in each room, but these have already been removed.
Living space is about 110 sqm (1,184 sq ft), garden area 450 sqm (4,844 sq ft) in the beautiful Palatinate region.
A gas connection is available.
We now want to renovate and already have an energy consultant who will also oversee the construction supervision.
Initial feedback from the energy consultant:
- Photovoltaic system on the south-facing roof without shading
- Thermal buffer storage recommended
- Ventilation system combined with an earth tube (seems to replace a split air conditioning unit? Does anyone have experience with this?)
- Ceiling heating
What I am considering:
- Photovoltaic system on the south-facing roof
- Thermal buffer storage
- 10 kWh electric storage battery
- Underfloor heating on the ground floor
- Low-temperature radiators on the upper and attic floors
- Split air conditioning units recessed into the ceiling in the living, bedroom, and guest rooms
We will fully equip the house with KNX automation, including modern and up-to-date control of the heat pump and storage system.
What would you suggest adding, combining, or improving here?
We are in a very comfortable financial situation, in our early 30s, and want to “do it right” this time.
The exterior of the property must be preserved, except for the photovoltaic system on the roof, as environmental protection takes priority over heritage preservation.
Thanks for your suggestions and information.
Best regards
We were incredibly lucky to purchase a great end-terrace house (heritage protection only on the exterior) in a fantastic neighborhood.
Built in 1915, but the structure is in excellent condition since it was built before the war.
No moisture in the basement, and the roof is dry.
Heating was provided by gas individual heaters in each room, but these have already been removed.
Living space is about 110 sqm (1,184 sq ft), garden area 450 sqm (4,844 sq ft) in the beautiful Palatinate region.
A gas connection is available.
We now want to renovate and already have an energy consultant who will also oversee the construction supervision.
Initial feedback from the energy consultant:
- Photovoltaic system on the south-facing roof without shading
- Thermal buffer storage recommended
- Ventilation system combined with an earth tube (seems to replace a split air conditioning unit? Does anyone have experience with this?)
- Ceiling heating
What I am considering:
- Photovoltaic system on the south-facing roof
- Thermal buffer storage
- 10 kWh electric storage battery
- Underfloor heating on the ground floor
- Low-temperature radiators on the upper and attic floors
- Split air conditioning units recessed into the ceiling in the living, bedroom, and guest rooms
We will fully equip the house with KNX automation, including modern and up-to-date control of the heat pump and storage system.
What would you suggest adding, combining, or improving here?
We are in a very comfortable financial situation, in our early 30s, and want to “do it right” this time.
The exterior of the property must be preserved, except for the photovoltaic system on the roof, as environmental protection takes priority over heritage preservation.
Thanks for your suggestions and information.
Best regards
dertill schrieb:
The earth-air heat exchanger is used in ventilation systems and air-to-air heat pumps for preconditioning the outside air. The air is passed through a gravel bed underground beforehand.
Cooler in summer, warmer in winter → slight climate control without air conditioning in summer and warmer air for the heat pump in winter, resulting in lower electricity consumption.
In reality, the additional effort for the earth-air heat exchanger with modern heat pumps is significantly higher than the effect, unless the excavation pit is already available (new construction). Especially for small living areas, this is overkill when it comes to energy savings for heating.
For cooling in summer, it’s nice if you can do without an air conditioner and rely only on temperature control. Thank you very much for your post, extremely informative.
We don’t have an excavation pit nor do we need any digging.
Good to check off and forget about it, I’ll inform the energy efficiency advisor (EEB).
dertill schrieb:
That contradicts the earth-air heat exchanger. Either ventilation system with earth-air heat exchanger for tempering or split air conditioners. It depends on your preferences, the region, and heat loads (south-facing windows, shading, etc.) in summer.
If you have split air conditioners in every room, you might as well skip the heat pump for heating and heat everything via the air conditioning units. This also saves the expensive ceiling heating system. The splits are my preference; our condominium was fully air-conditioned and I don’t want to be without it anymore. The condominium had underfloor heating and split air conditioning, which worked almost perfectly for us.
A single energy performance certificate (iFSP) will be prepared by July.
dertill schrieb:
Windows from 1988 with double glazing are a completely different world compared to 2024 double or triple glazing. For historic buildings, depending on shape and requirements, they are naturally significantly more expensive, but in that case, replacing the glass panes might be worthwhile instead of changing the entire window. The energy efficiency advisor should be able to tell you. The fear is always that the windows might be too “airtight,” for example with triple glazing.
True, we have strict specifications for windows, doors, garden doors, etc.
However, we will definitely have both the energy advisor and a window manufacturer inspect them again, and if they need to be replaced, so be it.
In the upper floor and attic, it’s just an enormous amount of work to remove the old radiators only to install underfloor heating there.
That’s why we are considering low-temperature radiators that can also be operated with 35°C (95°F) supply temperature.
Plus, we already have split air conditioners installed in the attic.
mayor333 schrieb:
end terrace house (monument protection only on the exterior)Has it been clarified with the heritage authority whether photovoltaic panels are allowed on the roof at all?@hanghaus2023 .. I think that’s settled.
mayor333 schrieb:
The exterior of the building must be preserved; the exception is the photovoltaic system on the roof because environmental protection takes priority over monument preservation.
hanse987 schrieb:
Has it been clarified with the heritage preservation office whether photovoltaic panels are allowed on the roof at all?Hey, yes, since March this year, as much as fits on the roof is permitted.
H
hanghaus20233 Apr 2024 08:39Then show us the house plans. The area available for the photovoltaic system is usually not that large in a terraced house.
hanghaus2023 schrieb:
Then show us the house plans. The area for the photovoltaic system on a terraced house is usually not that large. It should be close to 25–30 sqm (270–320 sq ft) on the south side.
Here is an excerpt from Google Earth as well as exterior views.
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