Old gas heater defective -> need a new one, but which one?!?

2020-02-11 14:31:52

New heat sink, for example underfloor heating, windows, insulation, new heating system.

The consumption of your house is relatively high.

Regarding the heating system, take a look at the BAFA website concerning gas hybrid heating and subsidies. If everything fits, you can receive up to 35% of the costs as a subsidy for a boiler + solar for hot water.

Depending on what you do, even a new underfloor heating system and the necessary work can be subsidized with up to 35%.

OK, thanks first of all for your information. I hadn’t even thought about a gas hybrid heating system yet. I will bring up the topic.
I also plan to insulate the basement ceiling, but it is slightly curved. I still have to inquire about that.
Windows were installed in 2013, exterior walls were not insulated because the walls are quite thick.

2020-03-03 08:22:03

Good morning,

so I have now obtained several offers.

It is amazing how the statements from the heating companies are..
For example:

Of 6 companies, one actually took a closer look at the old heating system and cleaned it again -> gas smell dropped sharply
The others more or less made a "remote diagnosis"

The decision is not easy.. Either become somewhat more independent with the photovoltaic system and rely on alternatives or fall back completely on fossil fuels again (alternatively on bio-gas)

We plan to have a photovoltaic system installed anyway. (9.9 kWp)

2020-03-03 08:44:24

Gas condensing boiler + hot water in one and done (I would completely avoid photovoltaics and such gimmicks - they only make everything unnecessarily expensive and you never get that money back).

I don’t quite understand the thing with the hot water heat pump:

"Domestic hot water heat pumps can, for example, use air from basement rooms, which have a constant and relatively high temperature during the winter months. The temperature in the basement room is lowered by the heat pump by about 2-4°C."

At the same time, the basement air is dehumidified."

Which basement has a constant relatively high temperature in winter? Also, the basement is cooled at the same time, right? And with a cold basement, there are problems with condensate again? - doesn’t sound logical to me at first.

With the new system and the replacement of the instantaneous water heater, you’ll already be more "environmentally friendly"… driven by biogas for all I care…

2020-03-03 08:47:50

Be sure to go to the other forum (the red one) and get advice there. Have all the data about your house ready and include that, wind speed insulation, windows, consumption. With a heat pump or heat pump in the basement, all my alarm bells are ringing at the moment.

2020-03-03 08:49:43

Photovoltaic system please note that the cover has not been lifted so far, it may happen that there is no secured feed-in tariff.

2020-03-03 08:59:37

Gas condensing boiler + hot water in one and done (I would completely skip photovoltaics and such games – it only makes everything unnecessarily expensive and you will never get the money back).

I don’t quite understand the thing with the hot water heat pump:

"Domestic hot water heat pumps can, for example, use the air of basement rooms, which have a constant and relatively high temperature during the winter months. The temperature in the basement room is cooled down by the heat pump by about 2–4°C."

At the same time, the basement air is dehumidified."

Which basement has a constantly relatively high temperature in winter? Besides, the basement is cooled simultaneously, right? And in a cold basement there are then problems with condensate again? – sounds illogical to me at first.

With the new system and the replacement of the instantaneous water heater, you will already be "more environmentally friendly"… powered by biogas if you want…

You can’t get a photovoltaic system in anymore? I read something different in various forums (but you shouldn’t use a storage).

If the heating (gas heating, old) is in the basement, it also gives off heat. How much that makes, I can’t answer right now.

Definitely go to the other forum (the red one) and get advice there.
Have all the data about your house ready and include that, wind strength, insulation, windows, consumption.

With a heat pump or heat pump in the basement, all my alarm bells are ringing at the moment.

Okay, I’m on it! I have already read about the hot water heat pump in the other forum. But I will ask specifically there again.

Photovoltaic system please note that the cap has not been lifted so far, it can happen that there is no guaranteed feed-in tariff.

Had a conversation with the nice colleagues yesterday, he said if it still works with March now, you get 9.87 cents/kWh for the next 20 years. But I will check again.

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Old gas heater defective -> need a new one, but which one?!?

Nissandriver

Nissandriver

Basti2709

T_im_Norden

T_im_Norden

Nissandriver