boxandroof
2019-06-13 10:37:25
- #1
Technically, there is no reason to combine controlled residential ventilation and (water-bearing!) heat pumps: the controlled residential ventilation already uses the waste heat of the house, which in any case would not be sufficient for the heat pump. In case of replacement and maintenance, you are tied to ONE outrageously expensive exotic device from one or a few manufacturers. Why should anyone do that? You replace controlled residential ventilation for 3k€. Water-bearing air-water heat pumps start as a monoblock also at around 3k€, the hot water storage can be separate. Split heat pumps with integrated potable water storage are, of course, more expensive. It is rare for everything to break down at the same time. The development of the devices continues, and in the case of replacement, you want to have free choice on the open market. Unsuitable combination devices are apparently often used by some general contractors in practice; taken to the extreme, these are pure air heaters. In forums, homeowners show up after a few years wondering about the enormous electricity bills, as they are largely heating directly with electricity despite expensive heating. Combination devices are for me initially an indicator that things will go wrong. Ideally, with good planning, you come close to the consumption of a good separate heat pump regarding operating consumption.Why do ventilation and heating have to be separate?