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This is how it works: Modifying for the climate

2021-10-12T07:09:08.702Z


The trend in home ownership is moving away from fossil fuels and towards renewable energies. Be it through a photovoltaic system, wood pellet heating or heat pump. Two families from Berg presented their future-oriented solutions to interested parties on a renovation tour.


The trend in home ownership is moving away from fossil fuels and towards renewable energies.

Be it through a photovoltaic system, wood pellet heating or heat pump.

Two families from Berg presented their future-oriented solutions to interested parties on a renovation tour.

Berg

- Dr. Hermann Will to a six-ton ​​pellet silo that takes up almost all of the space in the hobby room of his basement in Berg. “It's good that our house is not short on space,” he says. A year ago, Will and his wife Susanne Polewsky decided on wood pellet heating. “The oil heating was already 30 years old, we wanted to replace it,” Will explains to the ten or so participants in the renovation tour, which was organized on the initiative of Berger Bürgerbeteiligung in cooperation with the adult education center and the district office's climate protection department. Several families in the Berg community showed interested citizens how they had renovated their house in a climate-neutral way.

A year ago, Will and his wife had Christian Schneider from Aufkirchen build the wood pellet heating in the basement and a 45 square meter photovoltaic system on the roof. “We are very satisfied,” says Polewsky. However, it took a while for the two of them to decide on a change. "I'm technically completely underexposed," jokes Polewsky, who has lived with her husband in the house built in 1962 for 15 years. “At the beginning I found it difficult to get an overview. It was then easier with the help of experts, ”she says.

The couple have taken on an independent energy advisor who should advise them on what would best suit their home.

Josefine Anderer, climate protection manager for the district, thinks it is a good first approach.

“At the beginning I would recommend a building check.” The free VHS courses on the subject of “How to renovate properly”, which run until November 19, are also intended to give interested parties a first impression.

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Tank in the hobby room: Susanne Polewsky (4th from right) and her husband replaced their heating system a year ago. 

© Andrea Jaksch

The energy-efficient renovation cost the Will-Polewsky couple around 50,000 euros. "There was a state subsidy of 45 percent for the heating," says Will. “That has already had a positive effect on us.” For a year now, the Polewsky-Will house has only been heating with pellets from the Allgäu. The couple gets most of their electricity from the PV system on the roof, which has an output of 9.75 kWp has. Will can follow the current daily and yearly curves of the photovoltaic system on his mobile phone. “I can see when the consumption is particularly high,” he says. "That's a great thing."

Heinz Rothenfusser, who is from Aufkirchen, has also been able to track electricity consumption on his tablet since he had a new energy system installed in his house from the 1960s in 2017. In addition to a PV system with an output of five kWp, he and his wife Cornelia Weiß decided on a nano combined heat and power plant four years ago. The waste heat from the gas heating is used to generate electrical energy with the help of a Stirling engine. "Pellet heating or geothermal energy was not that easy in our house," says Rothenfusser. “We should have ripped out all the pipes.” In order to contribute to the energetic renovation, the family decided on the block-type thermal power station.

About a year ago, Rothenfußer and his wife built a new house with a wood look next door.

The special thing about it: It is 100 percent CO2-neutral, thanks to the four kWp photovoltaic system on the roof and the low-temperature heating in the basement.

A heat pump serves as a heat generator, which extracts the energy stored in the earth during the summer in winter.

"Only the next few years will show whether 100 percent CO2 neutrality will actually succeed in the long term," says Rothenfusser.

But he has taken a step in the right direction with the new building, which is rented to a family of four.

lf

Source: merkur

All news articles on 2021-10-12

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