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Alexander201018 Aug 2017 12:30Hello, I am looking for an affordable heating solution for a single-family house of about 250 square meters (2,690 square feet). A Vitodens 300 from Viessmann with a 160-liter (42-gallon) hot water tank will be installed. The household consists of three people. All the pipes—gas, water, and heating—are new. The ground floor has complete underfloor heating, and the upper floor has radiators. Natural gas and wood are available, and we handle the wood ourselves since we have two fireplaces. Solar energy is not planned yet but is under consideration, as many say that in summer the boiler remains off completely and all heating is done via solar. Another option we are thinking about is a wood gasification boiler that could be connected with the gas boiler, so the gas boiler would usually be off and only start when necessary—like if the wood gasifier runs out of fuel or is not fired.
The question is: what is worth it for a household of three? What would you recommend? We thought about maybe buying a wood gasification boiler online for around 4,000 euros and connecting it with the gas boiler so that the boiler would turn on only if no one is heating with the wood system. What do you think about that? Also, does the heating technician installing the gas boiler need to install any special connections? If yes, which ones?
The question is: what is worth it for a household of three? What would you recommend? We thought about maybe buying a wood gasification boiler online for around 4,000 euros and connecting it with the gas boiler so that the boiler would turn on only if no one is heating with the wood system. What do you think about that? Also, does the heating technician installing the gas boiler need to install any special connections? If yes, which ones?
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Your text is hard to read.
The most cost-effective option is probably to do nothing if you already have a gas heating system, as the price per kWh of heat from gas is not too high.
I don’t believe any investment is worthwhile except for a very good adjustment (hydraulic balancing, boiler configuration, etc.).
In summer, or from April to September depending on the location and Germany anyway, heating is usually not necessary, and a gas condensing boiler provides domestic hot water very cheaply. With an investment of about 4000 euros, you can produce your hot water for 30 years or more.
If you do not have a heating system at all, you can invest more to install a ground-source heat pump and possibly solar power, which promises lower running costs but is much more expensive upfront.
Your text is hard to read.
The most cost-effective option is probably to do nothing if you already have a gas heating system, as the price per kWh of heat from gas is not too high.
I don’t believe any investment is worthwhile except for a very good adjustment (hydraulic balancing, boiler configuration, etc.).
In summer, or from April to September depending on the location and Germany anyway, heating is usually not necessary, and a gas condensing boiler provides domestic hot water very cheaply. With an investment of about 4000 euros, you can produce your hot water for 30 years or more.
If you do not have a heating system at all, you can invest more to install a ground-source heat pump and possibly solar power, which promises lower running costs but is much more expensive upfront.
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