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
A more constructive point:
It is not advisable to let the house cool down completely. Depending on the construction method—very lightweight, for example in Scandinavian style, or heavy with screed, bricks, etc.—briefly reheating a cooled-down house either has no effect, negative effects, or works well.
It is not advisable to let the house cool down completely. Depending on the construction method—very lightweight, for example in Scandinavian style, or heavy with screed, bricks, etc.—briefly reheating a cooled-down house either has no effect, negative effects, or works well.
Of course, we have already looked at some pellet stoves in operation beforehand, and I was actually pleasantly surprised because I probably approached it with the same mindset as you.
I also ruled out using the pellet stove for hot water production in the summer in my first post.
Regards, Judyyy
I also ruled out using the pellet stove for hot water production in the summer in my first post.
Regards, Judyyy
markus27037 Nov 2016 14:00Judyyy schrieb:
In summer, the hot water demand should ideally be covered by a solar thermal system.But here you are talking about solar thermal. And that will not work.
@ BeHaElJa
I haven’t quite figured this out yet.
The idea is to cover the basic heating demand of 19°C (66°F)—which shouldn’t lead to actual cooling—using a heat pump to improve efficiency, and then bring in the pellet stove as needed. The pellet stove would distribute heat through the mechanical ventilation system with heat recovery / controlled residential ventilation and water to spread the warmth fairly evenly throughout the house.
Since we want to integrate the staircase into the living room, the pellet stove will likely be placed in a very central location.
Is it possible to connect a pellet stove with a fan to the controlled residential ventilation system in order to distribute the heat more effectively through that system?
I haven’t quite figured this out yet.
The idea is to cover the basic heating demand of 19°C (66°F)—which shouldn’t lead to actual cooling—using a heat pump to improve efficiency, and then bring in the pellet stove as needed. The pellet stove would distribute heat through the mechanical ventilation system with heat recovery / controlled residential ventilation and water to spread the warmth fairly evenly throughout the house.
Since we want to integrate the staircase into the living room, the pellet stove will likely be placed in a very central location.
Is it possible to connect a pellet stove with a fan to the controlled residential ventilation system in order to distribute the heat more effectively through that system?
Ah, now I understand what you mean.
Since I’m not completely resistant to advice, I have already looked into it and wrote about it in my third post...
But it’s easy to overlook something like that.
Best regards, Judyyy
Since I’m not completely resistant to advice, I have already looked into it and wrote about it in my third post...
Solar thermal is probably out, but we want a 10 kWp photovoltaic system, possibly with a heat pump for hot water.
But it’s easy to overlook something like that.
Best regards, Judyyy
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