S
Schwabe2315 Jul 2022 19:36Hello everyone,
we have slowly come to terms with the shock of the KfW funding stop and reduced the equipment and size back within our budget. The mechanical ventilation with heat recovery was also dropped. Our carpenter says that his wall construction does not require ventilation, so we removed it.
We still have a backup with the BAFA subsidy from 2020, which has been extended for us again. With a combined unit like the Tecalor THZ, we would receive almost one-third of the costs covered. We would also get that delivered in time. All other heat pump–only systems will very likely only arrive after the deadline, and I would have to request another extension for the BAFA deadline.
We have a quote and would have to invest around €9,000 ourselves. Would you go for it? Is this considered standard equipment nowadays? With the manageable additional costs, is it a no-brainer?
we have slowly come to terms with the shock of the KfW funding stop and reduced the equipment and size back within our budget. The mechanical ventilation with heat recovery was also dropped. Our carpenter says that his wall construction does not require ventilation, so we removed it.
We still have a backup with the BAFA subsidy from 2020, which has been extended for us again. With a combined unit like the Tecalor THZ, we would receive almost one-third of the costs covered. We would also get that delivered in time. All other heat pump–only systems will very likely only arrive after the deadline, and I would have to request another extension for the BAFA deadline.
We have a quote and would have to invest around €9,000 ourselves. Would you go for it? Is this considered standard equipment nowadays? With the manageable additional costs, is it a no-brainer?
D
Deliverer16 Jul 2022 09:35Schwabe23 schrieb:
Our carpenter says his wall construction doesn’t require ventilationWhich is not true. He is not allowed to build a wall that is not airtight.I have nothing more to add on the rest.
S
Schwabe2316 Jul 2022 09:51That certainly wasn’t the intention. Of course, you still need to air out the room once or twice a day to have enough oxygen to breathe. What he meant was that, due to the Fermacell and the wall construction made entirely of wood, moisture is buffered significantly, making mold almost impossible.
D
Deliverer16 Jul 2022 10:03He meant "My wall construction is barely susceptible to mold."
That’s already a difference and only one aspect of ventilation (which is quite unimportant in new buildings). So no matter what you do now, try to incorporate active ventilation into the house. The simplest and most cost-effective (and not necessarily worst) option would be small exhaust fans (80mm, 100mm) (3 inches, 4 inches) in wet rooms and utility areas, and, if necessary, retrofit trickle vents in the window frames.
Although this does not provide heat recovery, the additional costs over decades are likely to be lower than the ventilation system you saved on.
That’s already a difference and only one aspect of ventilation (which is quite unimportant in new buildings). So no matter what you do now, try to incorporate active ventilation into the house. The simplest and most cost-effective (and not necessarily worst) option would be small exhaust fans (80mm, 100mm) (3 inches, 4 inches) in wet rooms and utility areas, and, if necessary, retrofit trickle vents in the window frames.
Although this does not provide heat recovery, the additional costs over decades are likely to be lower than the ventilation system you saved on.