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DC/26/03073ApproveLast updated 08/08/2026, 17:19

An application is made for a non-material amendment to replace the previously approved air source heat pump with a different model of comparable dimensions and lower sound power level.

Non Material Amendment
The Street, Diss IP22

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Full Proposal

Application for a Non-Material Amendment relating to DC/24/03816 - The originally approved air source heat pump (Daikin Altherma 3 High Capacity Monobloc, dimensions 870mm (H) x 1380mm (W) x 460mm (D), sound power level 62 dB(A)) is proposed to be replaced with an Octopus Energy Cosy 12 (12kW) air source heat pump, dimensions 1375mm (H) x 855mm (W) x 595mm (D), sound power level 61 dB(A). The replacement unit is marginally quieter than the originally approved model and remains within a comparable overall size envelope.

Application Timeline

Application Registered17/07/2026
Application Validated20/07/2026
Decision Made06/08/2026
Decision Issued06/08/2026
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For neighbours

Physical construction works
Build-phase noise, dust and vehicles while works are carried out.

What the application involves, identified from its description — an indicator, not an assessment. Set your address to see distance and direction.

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