“Even under the most unfavourable assumptions, we did not find a significant increase in noise levels from multiple heat pumps. The cumulative noise impact of multiple ASHP installations in a high-density neighbourhood would not typically be distinguishable from that of a nearby single air source heat pump installed within MCS guidelines.”
Air source heat pumps are just air conditioners with some extra valves. I’m not sure why noise would be considered an issue.
Why wouldn’t the question be about how noisy air conditioners are then?
I don’t understand how it isn’t a genuine concern.