If a heat pump makes strange noises, maybe it’s also about time.. it would be more important to me than a refrigerator! As already mentioned, all experts say that the heat pump lasts significantly shorter than a gas heating system
A refrigerator is a heat pump. With a much lower performance level, of course, but nevertheless it is one.
It is always strange why heat pumps are considered a new unproven technology, where there are no long-term experiences yet. That is simply nonsense.
That all experts say that is also nonsense.
Regarding air-to-water heat pumps for heating residential buildings, there used to be problems especially with non-modulating pumps and botched hydraulics.
Modern heat pumps modulate and compressors can now handle many more switching cycles.
An engineer in building services/technical building equipment told me that.
maybe also due to oversizing by the heating engineer (we’ve always done it like that…) and therefore too frequent cycling… that would at least be a conceivable reason!
It’s rather an efficiency problem. The above-mentioned engineer also said that it basically doesn’t matter whether it cycles once a day or three times per hour.
It only becomes problematic if it cycles 50-100 times per hour. You can only achieve that with completely botched hydraulics, which does not happen with modulating ones anyway.
In this respect, a giant ghost is being conjured up here, which will probably turn out to be a hot air balloon.
But I don’t know that from first hand either. So we wait and see what happens in 20 years.