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Heat pumps · UK

NilanCompact P2 Air9 E-SILENT

The Nilan Compact P2 Air9 E-SILENT is an air-to-water heat pump with a SCOP of 5.33 (35 °C) and a sound power level of 54.7 dB(A). Under permitted development the limit is 42 dB(A) measured 1 m from the nearest neighbouring habitable-room window. Free-standing, the indicative minimum distance is 1.7 m; against a wall 2.4 m.

Last updated: Technical specifications Rules in the UK
SCOP (35 °C)
5.33

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.

Outdoor unit sound power
54.7dB(A)
Official source
Refrigerant
R290
Official source
Rated output 35 °C
5.2kW
Official source
Rated output 55 °C
4.7kW
Official source
UK

Rules in the UK

These rules are still being verified.

Minimum distance to your neighbour

Permitted development rights + MCS 020 planning standard · 1 m from the nearest neighbouring habitable-room window

Permitted development (MCS 020) ≤ 42 dB(A) · at the assessment position
Free-standing 1.7 m
Against wall 2.4 m
In corner 3.4 m

Indicative calculation (hemispherical, no barriers). Not a substitute for an MCS 020 assessment. Source

Boiler Upgrade Scheme

Unknown

Fixed grant towards installation; check current amount with Ofgem. Ofgem

Technical specifications

General
Type Air-to-water BAFA
Compressors 1 BAFA
Capacity control Inverter BAFA
Performance
Rated output 35 °C 5.2 kW BAFA
Rated output 55 °C 4.7 kW BAFA
Efficiency
SCOP (35 °C) 5.33 BAFA
SCOP (55 °C) 3.98 BAFA
Seasonal efficiency ηs 35 °C 209.6 % BAFA
Seasonal efficiency ηs 55 °C 156.3 % BAFA
COP A7/W35 4.87 BAFA
COP A2/W35 5.14 BAFA
COP A-7/W35 3.19 BAFA
Noise
Outdoor unit sound power 54.7 dB(A) BAFA
Indoor unit sound power 49.9 dB(A) BAFA
Refrigerant
Refrigerant R290 BAFA
Refrigerant charge 1.6 kg BAFA
Electrical
Max. power input 3.3 kW BAFA
Connectivity & smart
SG Ready Yes BAFA

Frequently asked questions

Can I install the Nilan Compact P2 Air9 E-SILENT without planning permission?

Under Permitted development rights + MCS 020 planning standard the unit must not exceed 42 dB(A) 1 m from the nearest neighbouring habitable-room window. With a sound power of 54.7 dB(A) that indicatively means 1.7 m free-standing, 2.4 m against a wall or 3.4 m in a corner. Your MCS installer must confirm this.

Which refrigerant does the Nilan Compact P2 Air9 E-SILENT use?

The Nilan Compact P2 Air9 E-SILENT uses R290.