Hello everyone,
we are still at the early stage of our house planning, and I’m trying to figure out the right heating system for us. Here are a few key points...
- Building style: townhouse with integrated double garage
- Living area: 160 m² (1,722 ft²)
- Occupants: currently 3, will increase to 4
- Both working full-time
- No basement
- Targeting KFW 55 standard
- Exterior walls made of Ytong
- Probably controlled ventilation with heat recovery (personally, not a must-have for me)
- Pellet stove (likely hydronic)
- Probably underfloor heating
- Probably solar thermal for hot water
- No gas connection available/possible
- Large plot, with 3.00–3.50 m (10–11.5 ft) hard clay soil (no drilling progress)
- No shading on the roof, good southern exposure
We definitely want a pellet stove for the living-kitchen-hall-dining area (approx. 55 m² / 592 ft²), mainly for the ambiance, and I’m considering heating the entire house with it (hydronic). Of course, storage and supply of wood pellets are two factors that need to be considered. Ideally, in summer the hot water demand should be covered by a solar thermal system. However, I don’t want to rely entirely on a “living room” stove as the central heating. A heat pump system would probably not be cost-effective if the pellet stove really works out.
Is it economically feasible to provide electric backup heating via the controlled ventilation system or thermal storage / layering tanks in case the pellet stove fails? Do you have any other ideas?
I really love underfloor heating, but since we are not home during the day, I’m not a fan of heating continuously, especially not with a pellet stove. Underfloor heating is well known to be slow to react. We also don’t want visible radiators. Would it be sufficient to charge a buffer tank of about 800 liters (210 gallons) once in the evening to last until the next evening?
Has anyone had experience with floor convector heating units?
Apparently they exist with and without fans. With fans, I guess the controlled ventilation system won’t work together, but without fans the room heating probably takes much longer, right?
How quickly can a controlled ventilation system distribute the heat from a stove/fireplace throughout the house via heat recovery? Probably too slowly, right?
Okay, I guess I’ve asked enough questions for now ops:
I would really appreciate your help and experiences.
Thank you in advance.
Best regards
Judyyy
we are still at the early stage of our house planning, and I’m trying to figure out the right heating system for us. Here are a few key points...
- Building style: townhouse with integrated double garage
- Living area: 160 m² (1,722 ft²)
- Occupants: currently 3, will increase to 4
- Both working full-time
- No basement
- Targeting KFW 55 standard
- Exterior walls made of Ytong
- Probably controlled ventilation with heat recovery (personally, not a must-have for me)
- Pellet stove (likely hydronic)
- Probably underfloor heating
- Probably solar thermal for hot water
- No gas connection available/possible
- Large plot, with 3.00–3.50 m (10–11.5 ft) hard clay soil (no drilling progress)
- No shading on the roof, good southern exposure
We definitely want a pellet stove for the living-kitchen-hall-dining area (approx. 55 m² / 592 ft²), mainly for the ambiance, and I’m considering heating the entire house with it (hydronic). Of course, storage and supply of wood pellets are two factors that need to be considered. Ideally, in summer the hot water demand should be covered by a solar thermal system. However, I don’t want to rely entirely on a “living room” stove as the central heating. A heat pump system would probably not be cost-effective if the pellet stove really works out.
Is it economically feasible to provide electric backup heating via the controlled ventilation system or thermal storage / layering tanks in case the pellet stove fails? Do you have any other ideas?
I really love underfloor heating, but since we are not home during the day, I’m not a fan of heating continuously, especially not with a pellet stove. Underfloor heating is well known to be slow to react. We also don’t want visible radiators. Would it be sufficient to charge a buffer tank of about 800 liters (210 gallons) once in the evening to last until the next evening?
Has anyone had experience with floor convector heating units?
Apparently they exist with and without fans. With fans, I guess the controlled ventilation system won’t work together, but without fans the room heating probably takes much longer, right?
How quickly can a controlled ventilation system distribute the heat from a stove/fireplace throughout the house via heat recovery? Probably too slowly, right?
Okay, I guess I’ve asked enough questions for now ops:
I would really appreciate your help and experiences.
Thank you in advance.
Best regards
Judyyy
Alex85 schrieb:
To say it again, pellet stoves are nonsense when it comes to "heating a house." These short bursts of high heat output don’t make sense in highly insulated new buildings. Even water heating jackets and other add-ons won’t change that.
Build a stove for ambiance and make sure its heat output is as low as possible.Hello Alex,
What leads you to this conclusion?
Properly designed and installed, a pellet stove with a water heat exchanger can indeed be suitable for heating a single-family home.
Olli
wrobel schrieb:
If properly planned and executed, a pellet stove with a water heat exchanger is indeed suitable for heating a single-family home.You have taken this out of context again. The discussion was about the additional (!) heating using a pellet stove while also having a heat pump installed. Please read the entire thread instead of picking isolated statements from the context.
That aside, of course a pellet stove is suitable for heating a single-family home. After all, it is a heat generator. They all produce heat.
However, one should ask why, in modern, insulated new buildings with a heating load of 5–6 kW, heat generators are used that, by design, deliver at least twice that output when they start heating. And then there is the challenge of finding a way to transfer this excessive heating capacity to a surface heating system, because crowding around the stove, leaving doors open, and relying on convection is really overdoing it.
It just doesn’t fit properly.
So, I finally managed to get back to the PC.
First of all, many thanks for your help and to wrobel for the positive feedback on pellet stoves.
However, I am somewhat leaning towards a heat pump, especially in combination with a photovoltaic system.
At the moment, we are still working on the floor plan, and I will wait for the heating demand calculation before making a final decision.
Thanks again.
Best regards,
Judyyy
First of all, many thanks for your help and to wrobel for the positive feedback on pellet stoves.
However, I am somewhat leaning towards a heat pump, especially in combination with a photovoltaic system.
At the moment, we are still working on the floor plan, and I will wait for the heating demand calculation before making a final decision.
Thanks again.
Best regards,
Judyyy
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