Hello,
I have a well-insulated KFW40 house from 2014 with underfloor heating and 170m² (1830 ft²) using a Weishaupt gas boiler WTC 15 (heating + hot water).
The gas boiler has two heating circuits. One for the house and the other for the garage. The garage is connected via a district heating pipeline (about 8m (26 ft) from the house). The garage should only be kept frost-free.
My annual gas consumption (heating + hot water) was about 9700 kWh.
I believe my house is well suited for a heat pump. Unfortunately, I wasn’t that knowledgeable back then.
Now my questions.
1. Which type of heat pump would you recommend (ground source or air source)?
2. Where can I install the heat pump? A) Inside the house, where the gas boiler is now, or B) in the garage? Unfortunately, the heat pump could not produce hot water in the garage because there is only a cold water line to the garage. Or are there any solutions? I would prefer the garage otherwise.
I hope you can help.
Thank you.
I have a well-insulated KFW40 house from 2014 with underfloor heating and 170m² (1830 ft²) using a Weishaupt gas boiler WTC 15 (heating + hot water).
The gas boiler has two heating circuits. One for the house and the other for the garage. The garage is connected via a district heating pipeline (about 8m (26 ft) from the house). The garage should only be kept frost-free.
My annual gas consumption (heating + hot water) was about 9700 kWh.
I believe my house is well suited for a heat pump. Unfortunately, I wasn’t that knowledgeable back then.
Now my questions.
1. Which type of heat pump would you recommend (ground source or air source)?
2. Where can I install the heat pump? A) Inside the house, where the gas boiler is now, or B) in the garage? Unfortunately, the heat pump could not produce hot water in the garage because there is only a cold water line to the garage. Or are there any solutions? I would prefer the garage otherwise.
I hope you can help.
Thank you.
A
Alessandro8 Aug 2022 11:12Vwgolfcabrio schrieb:
You have to swallow a toad. I will build it entirely myself, of course with the help of a plant engineer. You actually can. However, I consider it careless to recommend something like this here. In case of water damage or fire, it can become quite expensive from an insurance perspective. And with the new propane heat pumps, it's a completely different matter...
V
Vwgolfcabrio8 Aug 2022 11:19Alessandro schrieb:
You can do that. However, I consider it irresponsible to suggest this as advice here.
In case of water damage or fire, it can become quite expensive from an insurance perspective.
And with the new propane heat pumps, that’s a completely different matter… The tip was about procurement, not installation.
A
Axolotl-neu8 Aug 2022 11:21Vwgolfcabrio schrieb:
Does anyone have experience with the Panasonic Geisha air-to-water heat pump? This model is relatively affordable. How is the domestic hot water production handled? Are there any square-shaped hot water tanks? The round ones don’t look very elegant. - I have two units in operation. Mine cost just under €3,000 (about $3,300) each last year (I installed them myself). The experience is positive, as with most Panasonic users.
- Square tanks are only possible if you build a square casing around them. Otherwise, they are always round. The round shape also makes sense. The shape doesn’t really matter unless you need a design piece for your living room. But as far as I know, hot water tanks are usually installed in utility rooms that aren’t meant to win any design awards.
- Domestic hot water production works like with all other heat pumps. The system switches between heating and hot water production. The difference with Panasonic is that the switching is controlled externally.
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Vwgolfcabrio8 Aug 2022 11:35Axolotl-neu schrieb:
- Two units in use. Mine cost less than €3,000 each last year (I installed them myself). Experiences are positive (as with basically all Pana users).
- Use a square shape only if you are building a square enclosure around it. Otherwise, always round. Round is also more practical. The shape doesn’t really matter unless you need a design piece for the living room. But I only know hot water tanks in utility rooms that aren’t meant to be visually appealing.
- Hot water production works like with all other heat pumps. Switching between heating and hot water production. Only with Pana the switching is done externally.Thanks for the answers. Which hot water tank did you choose? The heat exchanger surface area should be as large as possible for a heat pump.
A
Axolotl-neu8 Aug 2022 12:48Vwgolfcabrio schrieb:
Which hot water storage tank did you choose? The heat exchanger surfaces should be as large as possible when using a heat pump.I chose two high-performance storage tanks from SHWT (one 300-liter (79 gallons) and one 200-liter (53 gallons)). They offer a good price-to-performance ratio and are also recommended in relevant discussions for the Pana.Regarding the self-installation of monoblock units, the internet is full of guidance and diagrams. If a heat generator is being replaced, most of the existing piping can still be used. Everything else can easily be handled, for example, with compression fittings, as work is usually done on surface-mounted pipes.
For electricians, the connection is straightforward.
Personally, I strongly recommend that skilled DIYers install things themselves, as long as there is no mandatory requirement to use a professional company.
For electricians, the connection is straightforward.
Personally, I strongly recommend that skilled DIYers install things themselves, as long as there is no mandatory requirement to use a professional company.
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