ᐅ Request for Evaluation of Heating and Ventilation Concept for a New Single-Family House
Created on: 31 Dec 2015 19:32
H
holg182
Hello everyone,
We are planning to build a detached single-family house, about 160 sqm (1,722 sq ft), on an 1100 sqm (11,840 sq ft) plot at the edge of town with a slight slope on slate soil. We are aiming for approximately a KfW 70 energy efficiency level, although with the current interest rates we are not relying on the related subsidies. Overall, our planning is going quite well, but when it comes to heating and ventilation, we are unsure if our plan really makes sense. Therefore, we appreciate your opinions on this 🙂
In general, we want to build and operate the house simply and cost-effectively, and it would be great if we could do this with a clear conscience for the environment. Our idea:
- A fairly well-insulated building envelope (see above), without it becoming a bottomless pit.
- Air-to-water heat pump
- Pellet stove in the living room
- Controlled mechanical ventilation (with heat recovery)
- Underfloor heating
The idea is that the air-to-water heat pump supplies most of the heat for the house, and the pellet stove in the living room provides extra support when it gets very cold outside. Ideally, this would happen automatically—so that the pellet stove switches on as soon as the outside temperature drops to a certain value, e.g., -3°C (27°F).
Here are a few questions for you experts:
1. Does this concept make sense as a whole?
2. Or would it be better / simpler / more cost-effective overall to use gas for purchase, operation, and maintenance?
3. Should the pellet stove in our setup be water-bearing (hydronic) or not?
4. Should the controlled mechanical ventilation system include heat recovery, or is that not necessarily required? Does a central or decentralized system make more sense here?
5. How can I find someone who can plan, recommend, offer, and install the right equipment for this setup (and not just the products that provide them with the highest commission)?
Thank you very much for your opinions—and Happy New Year in advance 🙂
We are planning to build a detached single-family house, about 160 sqm (1,722 sq ft), on an 1100 sqm (11,840 sq ft) plot at the edge of town with a slight slope on slate soil. We are aiming for approximately a KfW 70 energy efficiency level, although with the current interest rates we are not relying on the related subsidies. Overall, our planning is going quite well, but when it comes to heating and ventilation, we are unsure if our plan really makes sense. Therefore, we appreciate your opinions on this 🙂
In general, we want to build and operate the house simply and cost-effectively, and it would be great if we could do this with a clear conscience for the environment. Our idea:
- A fairly well-insulated building envelope (see above), without it becoming a bottomless pit.
- Air-to-water heat pump
- Pellet stove in the living room
- Controlled mechanical ventilation (with heat recovery)
- Underfloor heating
The idea is that the air-to-water heat pump supplies most of the heat for the house, and the pellet stove in the living room provides extra support when it gets very cold outside. Ideally, this would happen automatically—so that the pellet stove switches on as soon as the outside temperature drops to a certain value, e.g., -3°C (27°F).
Here are a few questions for you experts:
1. Does this concept make sense as a whole?
2. Or would it be better / simpler / more cost-effective overall to use gas for purchase, operation, and maintenance?
3. Should the pellet stove in our setup be water-bearing (hydronic) or not?
4. Should the controlled mechanical ventilation system include heat recovery, or is that not necessarily required? Does a central or decentralized system make more sense here?
5. How can I find someone who can plan, recommend, offer, and install the right equipment for this setup (and not just the products that provide them with the highest commission)?
Thank you very much for your opinions—and Happy New Year in advance 🙂
S
Sebastian795 Jan 2016 09:47Since plots of land are generally getting smaller rather than larger, finding a place for the outdoor unit where it doesn’t cause disturbance is quite a challenge...
Especially the more affordable units can be noisy in winter – regardless of whether they meet standards. At my father’s place on the outskirts of Berlin in the east, so many people installed them on their small houses – it was awful.
Especially the more affordable units can be noisy in winter – regardless of whether they meet standards. At my father’s place on the outskirts of Berlin in the east, so many people installed them on their small houses – it was awful.
B
Bauexperte5 Jan 2016 11:46Grym schrieb:
Another interesting topic that Professor Leukefeld has occasionally mentioned ... Before you consult this and other "experts," you should research their affiliations before sharing their opinions.
And before you ask – yes, I have met him in person.
Best regards, Bauexperte
That’s clear, but it’s not entirely unreasonable to consider that electricity could become more expensive in winter at some point (could!). It’s not just the few heat pumps; people also tend to stay indoors in front of the TV rather than outside, use lights, dryers instead of hanging laundry, and so on. And when 50 percent or more heat pumps are installed in new buildings, and heat pumps are also added when retrofitting, electricity demand in winter will increase even further... Electric cars also consume more energy in cold weather... This is overall a very long-term consideration... In summer, households cover most of their own electricity needs through photovoltaic systems and batteries...
S
Sebastian795 Jan 2016 12:29Oh, wind and water don’t flow in winter or at night? Interesting, I didn’t know that...
S
Sebastian795 Jan 2016 12:34Oh, you mean everyone will have their own photovoltaic system in the future?
Keep dreaming...
Keep dreaming...
Similar topics