#ClimateDiary We are in intense #Heatpump vs new boiler discussions in our household at the moment, and it is quite something how geopolitics and radiators (and other practicalities like: will the humming be loud?) all swirl through my head at once.
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Narrator: And as the days passed, the seasons turning, year after year, the old house became more and more aware that yes, the humming was loud.
(Yes, I've repeatedly heard people complain about the noise and no I haven't had enough experience with this personally or insight into how this can change from manufacturer to manufacturer)
@folfdk I can offer some insights: There are different designs. It depends on where the loud part of the heat pump system is. The loud part might be inside the building hidden in a well-insulated cellar, or outside on the front yard, or worst case on the side in the narrow gap between the buildings facing the neighbour's bedroom window.
Air heat pump consists of among other parts of a compressor (like in refrigerators or air conditioners) that makes deep, annoying humming noises, and a heat exchange (a ventilator pulling outside air over some pipes) that make a ventilator sound, so much softer, not deep humming.
One architecture of air heat pumps is to have one integrated box of machinery outside, and to pump the water that is used for heating (in floor heating or radiators) from the inside of the building out to the heat pump, where everything happens, and the warmer water back inside.
The other architecture is to have only the heat exchange outside (because it needs open air) and the compressor inside the building. The water used for heating goes only to/from the compressor unit, and between the compressor and the heat exchange outside there's a second cycle with a different liquid.
The first architecture ("monobloc") is cheaper but much louder for the surroundings.
The second architecture ("split") is more expensive but much quieter outside.
@pvonhellermannn -
@folfdk I can offer some insights: There are different designs. It depends on where the loud part of the heat pump system is. The loud part might be inside the building hidden in a well-insulated cellar, or outside on the front yard, or worst case on the side in the narrow gap between the buildings facing the neighbour's bedroom window.
Air heat pump consists of among other parts of a compressor (like in refrigerators or air conditioners) that makes deep, annoying humming noises, and a heat exchange (a ventilator pulling outside air over some pipes) that make a ventilator sound, so much softer, not deep humming.
One architecture of air heat pumps is to have one integrated box of machinery outside, and to pump the water that is used for heating (in floor heating or radiators) from the inside of the building out to the heat pump, where everything happens, and the warmer water back inside.
The other architecture is to have only the heat exchange outside (because it needs open air) and the compressor inside the building. The water used for heating goes only to/from the compressor unit, and between the compressor and the heat exchange outside there's a second cycle with a different liquid.
The first architecture ("monobloc") is cheaper but much louder for the surroundings.
The second architecture ("split") is more expensive but much quieter outside.
@pvonhellermannn@dasgrueneblatt
Thanks! That's really clear and understandable !
I appreciate it.
