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Heat pumps · UK

Mitsubishi Electric Ecodan PUHZ-SHW230YKA2 + ERSE-MEE

Mitsubishi Electric Ecodan PUHZ-SHW230YKA2 + ERSE-MEE
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The Mitsubishi Electric Ecodan PUHZ-SHW230YKA2 + ERSE-MEE is an air-to-water heat pump with a SCOP of 3.92 (35 °C) and a sound power level of 68 dB(A). Under permitted development the limit is 37 dB(A) measured 1 m in front of the centre of a neighbour’s habitable-room door or window. Free-standing, the indicative minimum distance is 14.2 m; against a wall 20.0 m.1

Last updated: Technical specificationsRules in the UK⇄ Compare this model
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SCOP (35 °C)
3.921

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

Outdoor unit sound power
68dB(A)1
Official source
Refrigerant
R410A1
Official source
Type (source)
Air-to-water1
Official source
Rated output 35 °C
23kW1
Official source
UK

Rules in the UK

Minimum distance to your neighbour

MCS 020(a) (England, permitted development since 29 May 2025)2 · 1 m in front of the centre of a neighbour’s habitable-room door or window

Permitted development (MCS 020(a))≤ 37 dB(A) · LAeq,5min
Free-standing14.2 m
Against wall20 m
In corner28.3 m

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

Boiler Upgrade Scheme

Check conditions

£7,500 – £9,0003Fixed grant (England & Wales)

Fixed grant in England and Wales, deducted from your installer’s quote. £9,000 when replacing oil or LPG off the gas grid (until March 2027). Scotland: Home Energy Scotland grant instead.4,5

  • Must be MCS-certified (product and installer). Check the Ofgem product eligibility list.
  • Rated output 23 kW; the scheme covers systems up to 45 kW.
  • SCOP at 55 °C: 3.2. The installed system needs a SCOP of at least 2.8 (MCS calculation).
Heat pump grants in the UK explained →

Technical specifications

General
Type (source)Air-to-water1
Compressors11
Capacity controlInverter1
Performance
Rated output 35 °C23 kW1
Rated output 55 °C23 kW1
Efficiency
SCOP (35 °C)3.921
SCOP (55 °C)3.21
Seasonal efficiency ηs 35 °C154 %1
Seasonal efficiency ηs 55 °C125 %1
COP A7/W353.651
COP A2/W353.361
COP A-7/W353.341
SEER (cooling)4.321
Noise
Outdoor unit sound power68 dB(A)1
Indoor unit sound power45 dB(A)1
Refrigerant
RefrigerantR410A1
Refrigerant charge7.1 kg1
Electrical
Max. power input13.16 kW1
Connectivity & smart
SG ReadyYes1

How it ranks

SCOP (35 °C): better than 1% of comparable models in our database (Heat pumps · Air-to-water · ≥ 14 kW; n = 208).

Rank 205 of 209

Compared with every model on VersusIndex in the same group with a known value; equal values do not count as better. This says nothing about price, installation or reliability.

Manufacturer documentation

External links to Mitsubishi Electric's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.

Compare with

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Other brands, same type and a comparable size.

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Guides on heat pumps

How we collect and check this data →

Frequently asked questions

Can I install the Mitsubishi Electric Ecodan PUHZ-SHW230YKA2 + ERSE-MEE without planning permission?

Under MCS 020(a) (England, permitted development since 29 May 2025) the unit must not exceed 37 dB(A) 1 m in front of the centre of a neighbour’s habitable-room door or window. With a sound power of 68 dB(A) that indicatively means 14.2 m free-standing, 20.0 m against a wall or 28.3 m in a corner. Your MCS installer must confirm this.1

How much Boiler Upgrade Scheme grant can you get for the Mitsubishi Electric Ecodan PUHZ-SHW230YKA2 + ERSE-MEE?

£7,500 in England and Wales, provided the product and installer are MCS-certified (£9,000 when replacing oil or LPG off the gas grid, until March 2027). The installer applies and deducts the grant from your quote.1

Which refrigerant does the Mitsubishi Electric Ecodan PUHZ-SHW230YKA2 + ERSE-MEE use?

The Mitsubishi Electric Ecodan PUHZ-SHW230YKA2 + ERSE-MEE uses R410A.1

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
  2. MCS 020(a) (England, permitted development since 29 May 2025)
  3. Boiler Upgrade Scheme: what you can get — GOV.UK · accessed 27 Sept 2026
  4. Boiler Upgrade Scheme: guidance for installers (V5) — Ofgem · accessed 27 Sept 2026
  5. Boiler Upgrade Scheme product eligibility — Ofgem · accessed 27 Sept 2026