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Heat pumps · UK

IntergasXtend Monoblock 5 kW

Intergas Xtend Monoblock 5 kW
Image: Intergasrequest removal

The Intergas Xtend Monoblock 5 kW is an hybrid heat pump with a SCOP of 4.06 (35 °C) and a sound power level of 49 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 1.6 m; against a wall 2.2 m.1

Last updated: Technical specifications Rules in the UK ⇄ Compare this model
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SCOP (35 °C)
4.061

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

Heating capacity (A7/W35)
5.04kW1
Manufacturer data
Outdoor unit sound power
49dB(A)1
Manufacturer data
Refrigerant
R321
Manufacturer data
Type (source)
Air-to-water1
Manufacturer data
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-standing 1.6 m
Against wall 2.2 m
In corner 3.2 m

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

Boiler Upgrade Scheme

Not eligible

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.
Heat pump grants in the UK explained →

Technical specifications

General
Type (source) Air-to-water1
System Hybrid (with gas boiler)1
Performance
Heating capacity (A7/W35) 5.04 kW1
Min. outdoor temperature -15 °C1
Efficiency
SCOP (35 °C) 4.061
Energy label 35 °C A, , 1
COP A7/W35 4.681
Noise
Outdoor unit sound power 49 dB(A)1
Indoor unit sound power 32 dB(A)1
Refrigerant
Refrigerant R321
Refrigerant charge 0.85 kg1
Dimensions & weight
Width 968 mm1
Height 689 mm1
Depth 367 mm1
Weight 48 kg1

Manufacturer documentation

  • Product page (intergas-verwarming.nl)
  • Brochure / leaflet — Intergas Xtend Monoblock – brochure met technische specificaties – 04/2024 (intergas-verwarming.nl, PDF)

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

Frequently asked questions

Can I install the Intergas Xtend Monoblock 5 kW 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 49 dB(A) that indicatively means 1.6 m free-standing, 2.2 m against a wall or 3.2 m in a corner. Your MCS installer must confirm this.1

How much Boiler Upgrade Scheme grant can you get for the Intergas Xtend Monoblock 5 kW?

Probably none. 1

Which refrigerant does the Intergas Xtend Monoblock 5 kW use?

The Intergas Xtend Monoblock 5 kW uses R32.1

Sources

  1. Intergas Xtend Monoblock – brochure met technische specificaties, 04/2024 — Intergas Verwarming B.V. · 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