{
 "id": "hp_noise_limit_mcs020",
 "name": "Heat pump noise limit under the older MCS 020 standard",
 "category": "heat_pump_noise",
 "value_num": 42.0,
 "display": "42 dB(A)",
 "unit": "permitted development noise limit under MCS 020, the standard Scotland, Wales and Northern Ireland still use",
 "period_start": "2026-09-30",
 "period_end": null,
 "period_kind": "page_undated",
 "deadline": null,
 "source_url": "https://mcscertified.com/wp-content/uploads/2024/11/MCS-020-Consultation-Response-Final.pdf",
 "source_org": "MCS, consultation response on MCS 020",
 "checked_at": "2026-09-30",
 "recheck_by": "2026-12-29",
 "history": [],
 "public_note": "The older standard, MCS 020, sets the permitted development noise limit at 42 dB(A). It is the one Scotland, Wales and Northern Ireland still use.",
 "next": null,
 "url": "https://hearthsum.co.uk/api/hp_noise_limit_mcs020.json"
}