ᐅ Setting up a mechanical ventilation system with heat recovery for an energy-efficient home (KfW 70 standard) combined with underfloor heating
Created on: 30 Nov 2014 12:03
P
PhoenixDH
Hello everyone,
after living in our new house for a few days now, I’m wondering if our heating system is set up optimally.
It consists of a gas boiler with a 100-liter (26-gallon) hot water tank and a mechanical ventilation system with heat recovery.
The entire ground floor has underfloor heating, while upstairs only the bathroom does.
The other rooms are equipped with panel radiators.
My friends and I both work and leave the house early, around 7:00 a.m., returning only around 6:00 p.m.
Currently, we have the system programmed so that the heating/ventilation system/pump/hot water start about one hour before we’re home and turn off when we leave, or at 10:00 p.m. in the evening, except on weekends.
Does it make sense to set the system up this way?
Considering that underfloor heating is quite slow to react.
The question is, what is more efficient: generating energy only when needed, taking into account that the system cools down in between, or maintaining a constant temperature and using just one time window per day.
Some practical experience would be helpful, thanks!
after living in our new house for a few days now, I’m wondering if our heating system is set up optimally.
It consists of a gas boiler with a 100-liter (26-gallon) hot water tank and a mechanical ventilation system with heat recovery.
The entire ground floor has underfloor heating, while upstairs only the bathroom does.
The other rooms are equipped with panel radiators.
My friends and I both work and leave the house early, around 7:00 a.m., returning only around 6:00 p.m.
Currently, we have the system programmed so that the heating/ventilation system/pump/hot water start about one hour before we’re home and turn off when we leave, or at 10:00 p.m. in the evening, except on weekends.
Does it make sense to set the system up this way?
Considering that underfloor heating is quite slow to react.
The question is, what is more efficient: generating energy only when needed, taking into account that the system cools down in between, or maintaining a constant temperature and using just one time window per day.
Some practical experience would be helpful, thanks!
Hello,
do you have a summary for yourself now regarding the heating system settings, @PhoenixDH?
In the meantime, I’m working on our annual consumption because we have signed up for a new tariff.
Looking back one year: in October 2014, we did not receive the energy provider’s annual final reading or the final bill (both were sent to our old address), so we were placed in a higher consumption category. That was quite a shock.
We then managed to get it lowered somewhat, but with an estimated value including an undocumented screed drying program, it’s hard to determine the actual average yearly consumption.
Also, we prefer to pay more monthly rather than getting a large final bill.
(that’s why we record daily values in your thread)
Now we have last year’s data:
Exact consumption over the last year (up to today): 11,000 kWh (the meter shows 1,000 cubic meters of gas)
From what I understood, you have a prefabricated house, while ours is solid construction.
It would be great to simply read your comparison, including the floor area in square meters. We have 138 m² (1,487 sq ft), with as open a layout as possible. We use a stove for a cozy atmosphere in the evenings; the daytime heating runs underfloor heating from 3 p.m. to 9 p.m.
We adjust the heating manually in winter months based on felt cold, and we use thermostats in each room (we definitely notice the difference).
Regards, Yvonne
do you have a summary for yourself now regarding the heating system settings, @PhoenixDH?
In the meantime, I’m working on our annual consumption because we have signed up for a new tariff.
Looking back one year: in October 2014, we did not receive the energy provider’s annual final reading or the final bill (both were sent to our old address), so we were placed in a higher consumption category. That was quite a shock.
We then managed to get it lowered somewhat, but with an estimated value including an undocumented screed drying program, it’s hard to determine the actual average yearly consumption.
Also, we prefer to pay more monthly rather than getting a large final bill.
(that’s why we record daily values in your thread)
Now we have last year’s data:
Exact consumption over the last year (up to today): 11,000 kWh (the meter shows 1,000 cubic meters of gas)
From what I understood, you have a prefabricated house, while ours is solid construction.
It would be great to simply read your comparison, including the floor area in square meters. We have 138 m² (1,487 sq ft), with as open a layout as possible. We use a stove for a cozy atmosphere in the evenings; the daytime heating runs underfloor heating from 3 p.m. to 9 p.m.
We adjust the heating manually in winter months based on felt cold, and we use thermostats in each room (we definitely notice the difference).
Regards, Yvonne
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